About MIDI Opener
MIDI Opener - Play, Practice & Export MIDI Files Open any MIDI file and take full control of your music. MIDI Opener is a fast, precise MIDI player built for musicians who want to practice smarter, isolate parts,...
MIDI Opener - Play, Practice & Export MIDI Files Open any MIDI file and take full control of your music. MIDI Opener is a fast, precise MIDI player built for musicians who want to practice smarter, isolate parts, customize arrangements, route playback to external gear, export their changes, and deeply explore songs without the complexity of a DAW. WHY MIDI OPENER . Instantly open and play standard MIDI files (.mid, .midi) . Ultra-responsive playback with zero clutter . Built for practice, learning, live performance, and musical exploration . Completely ad-free POWERFUL PLAYBACK CONTROL . Change tempo in real time (slow down or speed up) . Transpose key instantly to match your instrument . Mute, solo, and adjust volume for each track . Swap instruments using all 128 General MIDI sounds . Import custom SoundFont (.sf2) and DLS soundbanks . Apply reverb, delay, distortion, and EQ effects EXPORT YOUR CHANGES . Export audio as MP3, M4A, or WAV . Export modified MIDI files with your changes . Save customized practice mixes and arrangements . Perfect for backing tracks, sharing, and rehearsal prep PRACTICE WITH PRECISION . Loop any section with A-B looping . Isolate difficult passages and repeat them . Break down complex songs into manageable parts . Save and instantly restore full practice setups with Snapshots Perfect for pianists, guitarists, producers, singers, music directors, and students. MIDI OUT & EXTERNAL DEVICES . Send MIDI playback to external keyboards, synths, drum machines, and sound modules . Connect over USB, Bluetooth, or Wi-Fi . Compatible with Logic Pro, Ableton Live, GarageBand, and CoreMIDI apps . Use premium external instrument sounds and studio hardware SING AND PRACTICE . View embedded lyrics when available . Real-time word highlighting synced to playback . Great for karaoke and vocal practice SEE YOUR MUSIC . Clean, readable note timeline . Track-based visual layout . Retro 3D visualizer . Multiple visual themes ORGANIZE YOUR MIDI LIBRARY . Import from Files, AirDrop, Mail, and other apps . Create playlists . Queue songs for continuous playback UPGRADE OPTIONS Free - The Player & Customizer Open and play MIDI files with powerful built-in customization tools. Includes instrument swapping with all 128 General MIDI sounds, custom SoundFont and DLS support, synchronized lyrics, audio effects, song section looping, visual themes, saved mixes with Snapshots, playlists, queue support, and a complete MIDI song library experience-all in a fast, focused, ad-free player. Practice Pack - The Musician’s Upgrade Unlock advanced practice and arrangement tools including real-time tempo control, key transposition, per-track mute, solo, and volume controls, plus MP3 audio and MIDI export for creating custom practice mixes, backing tracks, and arrangements. MIDI Out - The Producer’s Upgrade Route MIDI playback to external keyboards, synths, drum machines, DAWs, and professional music hardware over USB, Bluetooth, or Wi-Fi using CoreMIDI. All Access - Everything, Once Get the complete MIDI Opener experience with every upgrade included, plus discounted upgrade pricing if you already own another product. FAST. FOCUSED. NO DISTRACTIONS. Made for musicians who want control-not complexity.
Version History Version 5.4: Fixes * Some files showed all tracks combined into a single percussion track Version 5.3.2: Fixes * Purchased product issues * Better loop controls Version 5.3.1: Fixes * Playback sync Version 5.3: MIDI Out MIDI Opener now lets you route playback to external MIDI hardware, synths, DAWs, and music apps. This release also simplifies upgrades with a new product structure built around Practice Pack, MIDI Out, and All Access. • NEW: MIDI Out — send MIDI playback to external keyboards, synths, sound modules, DAWs, and CoreMIDI apps • USB, Bluetooth & Wi-Fi MIDI support — connect to compatible external devices and software • New upgrade structure — streamlined offerings with Practice Pack, MIDI Out, and All Access • Smarter upgrade paths — discounted All Access upgrades for existing owners • Improved purchase flow, entitlement handling, and upgrade experience • Fixed: First note was sometimes silent • Fixed: Missing language translations Version 5.2: Bug fixes and performance enhancements • Songs instantly repeat in single repeat mode • Playhead scrubbing improvement • Fixed startup crash on older iOS versions Version 5.1: Export audio or MIDI files • Save exactly what you hear as an MP3, M4A or WAV file. • Export your changes as a new MIDI file. • Improved UI for smaller screens. Version 5.0: Powerful new controls, smarter practice tools, and a faster, more responsive experience: • Per-track volume control for precise mixing • Create and loop custom sections with ease • Media library with playlists and song queue • Save and instantly restore full mix states with Snapshots • Multiple visual themes for clear, customizable note views • Improved playback performance and responsiveness 5.4 15h ago Version 5.3.2: Fixes * Purchased product issues * Better loop controls Version 5.3.1: Fixes * Playback sync Version 5.3: MIDI Out MIDI Opener now lets you route playback to external MIDI hardware, synths, DAWs, and music apps. This release also simplifies upgrades with a new product structure built around Practice Pack, MIDI Out, and All Access. • NEW: MIDI Out — send MIDI playback to external keyboards, synths, sound modules, DAWs, and CoreMIDI apps • USB, Bluetooth & Wi-Fi MIDI support — connect to compatible external devices and software • New upgrade structure — streamlined offerings with Practice Pack, MIDI Out, and All Access • Smarter upgrade paths — discounted All Access upgrades for existing owners • Improved purchase flow, entitlement handling, and upgrade experience • Fixed: First note was sometimes silent • Fixed: Missing language translations Version 5.2: Bug fixes and performance enhancements • Songs instantly repeat in single repeat mode • Playhead scrubbing improvement • Fixed startup crash on older iOS versions Version 5.1: Export audio or MIDI files • Save exactly what you hear as an MP3, M4A or WAV file. • Export your changes as a new MIDI file. • Improved UI for smaller screens. Version 5.0: Powerful new controls, smarter practice tools, and a faster, more responsive experience: • Per-track volume control for precise mixing • Create and loop custom sections with ease • Media library with playlists and song queue • Save and instantly restore full mix states with Snapshots • Multiple visual themes for clear, customizable note views • Improved playback performance and responsiveness 5.3.2 3d ago Version 5.3.1: Fixes * Playback sync Version 5.3: MIDI Out MIDI Opener now lets you route playback to external MIDI hardware, synths, DAWs, and music apps. This release also simplifies upgrades with a new product structure built around Practice Pack, MIDI Out, and All Access. • NEW: MIDI Out — send MIDI playback to external keyboards, synths, sound modules, DAWs, and CoreMIDI apps • USB, Bluetooth & Wi-Fi MIDI support — connect to compatible external devices and software • New upgrade structure — streamlined offerings with Practice Pack, MIDI Out, and All Access • Smarter upgrade paths — discounted All Access upgrades for existing owners • Improved purchase flow, entitlement handling, and upgrade experience • Fixed: First note was sometimes silent • Fixed: Missing language translations Version 5.2: Bug fixes and performance enhancements • Songs instantly repeat in single repeat mode • Playhead scrubbing improvement • Fixed startup crash on older iOS versions Version 5.1: Export audio or MIDI files • Save exactly what you hear as an MP3, M4A or WAV file. • Export your changes as a new MIDI file. • Improved UI for smaller screens. Version 5.0: Powerful new controls, smarter practice tools, and a faster, more responsive experience: • Per-track volume control for precise mixing • Create and loop custom sections with ease • Media library with playlists and song queue • Save and instantly restore full mix states with Snapshots • Multiple visual themes for clear, customizable note views • Improved playback performance and responsiveness 5.3.1 4d ago Version 5.3: MIDI Out MIDI Opener now lets you route playback to external MIDI hardware, synths, DAWs, and music apps. This release also simplifies upgrades with a new product structure built around Practice Pack, MIDI Out, and All Access. • NEW: MIDI Out — send MIDI playback to external keyboards, synths, sound modules, DAWs, and CoreMIDI apps • USB, Bluetooth & Wi-Fi MIDI support — connect to compatible external devices and software • New upgrade structure — streamlined offerings with Practice Pack, MIDI Out, and All Access • Smarter upgrade paths — discounted All Access upgrades for existing owners • Improved purchase flow, entitlement handling, and upgrade experience • Fixed: First note was sometimes silent • Fixed: Missing language translations Version 5.2: Bug fixes and performance enhancements • Songs instantly repeat in single repeat mode • Playhead scrubbing improvement • Fixed startup crash on older iOS versions Version 5.1: Export audio or MIDI files • Save exactly what you hear as an MP3, M4A or WAV file. • Export your changes as a new MIDI file. • Improved UI for smaller screens. Version 5.0: Powerful new controls, smarter practice tools, and a faster, more responsive experience: • Per-track volume control for precise mixing • Create and loop custom sections with ease • Media library with playlists and song queue • Save and instantly restore full mix states with Snapshots • Multiple visual themes for clear, customizable note views • Improved playback performance and responsiveness 5.3 May 26 Version 5.2: Bug fixes and performance enhancements • Songs instantly repeat in single repeat mode • Playhead scrubbing improvement • Fixed startup crash on older iOS versions Version 5.1: Export audio or MIDI files • Save exactly what you hear as an MP3, M4A or WAV file. • Export your changes as a new MIDI file. • Improved UI for smaller screens. Version 5.0: Powerful new controls, smarter practice tools, and a faster, more responsive experience: • Per-track volume control for precise mixing • Create and loop custom sections with ease • Media library with playlists and song queue • Save and instantly restore full mix states with Snapshots • Multiple visual themes for clear, customizable note views • Improved playback performance and responsiveness 5.2 May 21 Version 5.1: Export audio or MIDI files • Save exactly what you hear as an MP3, M4A or WAV file. • Export your changes as a new MIDI file. • Improved UI for smaller screens. Version 5.0: Powerful new controls, smarter practice tools, and a faster, more responsive experience: • Per-track volume control for precise mixing • Create and loop custom sections with ease • Media library with playlists and song queue • Save and instantly restore full mix states with Snapshots • Multiple visual themes for clear, customizable note views • Improved playback performance and responsiveness 5.1 May 16 Powerful new controls, smarter practice tools, and a faster, more responsive experience: • Per-track volume control for precise mixing • Create and loop custom sections with ease • Media library with playlists and song queue • Save and instantly restore full mix states with Snapshots • Multiple visual themes for clear, customizable note views • Improved playback performance and responsiveness 5.0 May 13 Version 4.3 Release Notes New Features • Import soundbanks directly from other apps Open and load soundbank files straight from Files, Mail, Messages, and supported music apps without extra steps. • Completely ad free All ads have been removed for a faster, cleaner, more focused experience. • Improved energy efficiency Optimized background behavior and animation timing to reduce battery usage during extended sessions. Fixes and Improvements • Fixed a critical iOS 26 soundbank crash Resolved a system level issue that could cause crashes when opening certain soundbanks on iOS 26. • Updated styling for iOS 26 Refined layout and visual details to better match the latest iOS design system. 4.3 Jan 2 * QuickLook preview: From the Files app you can now see a song's info with a handy preview. * Reduced ad placement * Performance improvements * Bug fixes 4.2.3 06/06/2023 Improved stability and sound quality. Re-enabled pretty background colors. Please get in touch if you experience issues with any MIDI files or sound banks. 4.2.2 05/23/2023 Crash recovery — some combinations of MIDI files and soundbanks are not yet supported. 4.2.1 05/17/2023 TLDR: Synchronized lyrics, 3D visualizer, bug fixes, new app icon Welcome to the latest update of MIDI Opener! We've been hard at work making your MIDI experience even more enjoyable, and we're excited to introduce version 4.2. In addition to bug fixes, this update brings you some amazing new features that we believe will elevate your music journey, all at no additional cost. Plus there’s a new app icon. NEW FEATURES Lyrics Synced with Music: Sing along with your favorite tunes! Our newly integrated lyrics feature allows you to view and follow the lyrics in real-time as the music plays. No need to search for lyrics elsewhere, it's all right here in MIDI Opener. 3D Note Visualizer: Immerse yourself in your music like never before with our stunning new 3D Note Visualizer. Watch the notes flow in a captivating 3D environment, giving you a fresh perspective on your favorite MIDI tracks. IMPORTANT BUG FIXES Key Transpose Reset: We've listened to your feedback and resolved an issue with key transposition. Now, when you load a new song, the app will automatically reset to the original key of that song, as expected. Crashes: Overall stability has been greatly improved. At MIDI Opener, we always strive to provide you with the best possible experience. We hope that these new standard features will make your music exploration even more enjoyable. Please continue to share your feedback, and we'll keep working to make the app even better. Happy listening and singing! 4.2 05/07/2023 Version 4.1 Update Release Notes Summary of Version 4.0: MIDI Opener 4.0 was a major update that introduced a completely rebuilt app with a new UI, displaying all notes in each track of the song. This version also brought the ability to mute or solo any track, change each track's instrument, and adjust the tempo. The app now comes bundled with a free song for users to explore the new features. What's New in Version 4.1: Key Transposition Feature: We've added a new key transposition feature, available in the Change Tempo upgrade, Full Upgrade, and Discounted Full Upgrade. Easily change the song's detected key a semi-tone at a time or up to three octaves in either direction. Bug Fixes & Performance Optimization: We've addressed several bugs and improved the overall performance of the app for a smoother user experience. Enhanced Graphic Equalizer: The graphic equalizer now features the ISO standard 10 frequency bands, allowing for more precise control over your audio. Bundled Song Access: Tapping the logo in the upper left corner of the app now loads the bundled song with all upgrades enabled for free. Enjoy testing out all the app's expressive capabilities! Sound Effects Feature: We'd like to remind our users that the sound effects feature is available to everyone on every song, allowing you to get creative with your music. Update to MIDI Opener 4.1 today and experience the new key transposition feature, enhanced graphic equalizer, and more. As always, we appreciate your support and feedback. Happy music-making! 4.1 04/13/2023 Introducing MIDI Opener 4.0: Revolutionizing the MIDI player experience with all new track controls (mute, solo, change instrument) and effects (reverb, delay, distortion and equalizer). Prepare to be dazzled by the latest and greatest version of MIDI Opener, the ultimate free MIDI player app that has taken the App Store by storm. Today, we're thrilled to announce the launch of MIDI Opener 4.0, a complete overhaul of the app, jam-packed with exciting new features designed to elevate your MIDI experience to unprecedented heights. With a sleek, all-new user interface, MIDI Opener 4.0 now showcases every note in each track of your favorite songs, offering an immersive and visually stunning listening experience. But that's not all! This groundbreaking update also introduces a premium upgrade option that allows users to mute or solo any track in a song, providing full control over the composition and letting you tailor the music to your preferences. Feeling creative? MIDI Opener 4.0 lets you unleash your imagination by giving you the power to change each track's instrument from a diverse selection of 128 General MIDI instruments. Customize your music like never before, and bring your favorite songs to life in entirely new ways with four effects filters: reverb, delay, distortion and equalizer. To help you explore the app's groundbreaking features, MIDI Opener 4.0 comes bundled with a specially crafted song that demonstrates the full potential of the new track controls and adjustable tempo. This song loads by default if you haven’t loaded a song yet, and can be accessed at any time through the app’s Settings screen. Don't miss out on the MIDI revolution! Download MIDI Opener 4.0 from the App Store today and experience the future of MIDI playback at your fingertips. About MIDI Opener: MIDI Opener is a cutting-edge, free MIDI player app that has transformed the way users interact with and enjoy MIDI music. Offering a range of customizable features and an intuitive interface, MIDI Opener has quickly become the go-to choice for MIDI enthusiasts worldwide. 4.0 04/03/2023 - Fixed problem with bad soundbanks - Fixed autoplay issue 3.4 10/24/2022 Use your own soundbanks (SoundFont and DLS)! Find .sf2 and .dls files at the website: https://martianrover.com/midi-opener#soundbanks 3.3 10/23/2022 * Convenient BPM presets * Discounted full upgrade if you've already purchased an upgrade 3.2 10/19/2022 Improvements * Autoplay option * Song title uses file name * Elapsed and remaining times * Many language translations * Bug fixes 3.1 10/16/2022 Major update with new features, fixes and redesign! * Now you can purchase upgrades to remove ads or change playback tempo. * Dark mode! * Support for older devices including iPad Mini 2nd generation * Song name is displayed on screen * Open website directly from app so that you can find MIDI files and contact us Your comments are being heard! Please use the contact form or add an app review with feature requests. 3.0 09/19/2022 * Dramatically improved sounds. * Offline support: saves last played song for convenient replay. Thanks for using MIDI Opener! 2.0 06/06/2020 Updates for iOS 11 1.5 01/23/2018 Version 1.4.1: * Fixed iOS 10 problem opening files from other apps Version 1.4: * Loop button controls playback repeat Version 1.3: * Sound plays in background when you leave the app or lock device * You can control playback from the lock screen and control center 1.4.1 03/18/2017 Version 1.4: * Loop button controls playback repeat Version 1.3: * Sound plays in background when you leave the app or lock device. * You can control playback from the lock screen and control center. 1.4 03/16/2017 Version 1.3: * Sound plays in background when you leave the app or lock device. * You can control playback from the lock screen and control center. Version 1.3.1: * Bug fixes 1.3.1 02/07/2017 * Sound plays in background when you leave the app or lock device. * You can control playback from the lock screen and control center. 1.3 02/06/2017
Previous Versions
Here you can find the changelog of MIDI Opener since it was posted on our website on 2016-09-30 21:26:15.
The latest version is 5.4 and it was updated on 2026-06-24 13:19:45. See below the changes in each version.
MIDI Opener version 5.4
Updated At: 2026-06-03
Changes: Version History Version 5.4: Fixes
* Some files showed all tracks combined into a single percussion track
Version 5.3.2: Fixes
* Purchased product issues
* Better loop controls
Version 5.3.1: Fixes
* Playback sync
Version 5.3: MIDI Out
MIDI Opener now lets you route playback to external MIDI hardware, synths, DAWs, and music apps. This release also simplifies upgrades with a new product structure built around Practice Pack, MIDI Out, and All Access.
• NEW: MIDI Out — send MIDI playback to external keyboards, synths, sound modules, DAWs, and CoreMIDI apps
• USB, Bluetooth & Wi-Fi MIDI support — connect to compatible external devices and software
• New upgrade structure — streamlined offerings with Practice Pack, MIDI Out, and All Access
• Smarter upgrade paths — discounted All Access upgrades for existing owners
• Improved purchase flow, entitlement handling, and upgrade experience
• Fixed: First note was sometimes silent
• Fixed: Missing language translations
Version 5.2: Bug fixes and performance enhancements
• Songs instantly repeat in single repeat mode
• Playhead scrubbing improvement
• Fixed startup crash on older iOS versions
Version 5.1: Export audio or MIDI files
• Save exactly what you hear as an MP3, M4A or WAV file.
• Export your changes as a new MIDI file.
• Improved UI for smaller screens.
Version 5.0: Powerful new controls, smarter practice tools, and a faster, more responsive experience:
• Per-track volume control for precise mixing
• Create and loop custom sections with ease
• Media library with playlists and song queue
• Save and instantly restore full mix states with Snapshots
• Multiple visual themes for clear, customizable note views
• Improved playback performance and responsiveness 5.4 15h ago Version 5.3.2: Fixes
* Purchased product issues
* Better loop controls
Version 5.3.1: Fixes
* Playback sync
Version 5.3: MIDI Out
MIDI Opener now lets you route playback to external MIDI hardware, synths, DAWs, and music apps. This release also simplifies upgrades with a new product structure built around Practice Pack, MIDI Out, and All Access.
• NEW: MIDI Out — send MIDI playback to external keyboards, synths, sound modules, DAWs, and CoreMIDI apps
• USB, Bluetooth & Wi-Fi MIDI support — connect to compatible external devices and software
• New upgrade structure — streamlined offerings with Practice Pack, MIDI Out, and All Access
• Smarter upgrade paths — discounted All Access upgrades for existing owners
• Improved purchase flow, entitlement handling, and upgrade experience
• Fixed: First note was sometimes silent
• Fixed: Missing language translations
Version 5.2: Bug fixes and performance enhancements
• Songs instantly repeat in single repeat mode
• Playhead scrubbing improvement
• Fixed startup crash on older iOS versions
Version 5.1: Export audio or MIDI files
• Save exactly what you hear as an MP3, M4A or WAV file.
• Export your changes as a new MIDI file.
• Improved UI for smaller screens.
Version 5.0: Powerful new controls, smarter practice tools, and a faster, more responsive experience:
• Per-track volume control for precise mixing
• Create and loop custom sections with ease
• Media library with playlists and song queue
• Save and instantly restore full mix states with Snapshots
• Multiple visual themes for clear, customizable note views
• Improved playback performance and responsiveness 5.3.2 3d ago Version 5.3.1: Fixes
* Playback sync
Version 5.3: MIDI Out
MIDI Opener now lets you route playback to external MIDI hardware, synths, DAWs, and music apps. This release also simplifies upgrades with a new product structure built around Practice Pack, MIDI Out, and All Access.
• NEW: MIDI Out — send MIDI playback to external keyboards, synths, sound modules, DAWs, and CoreMIDI apps
• USB, Bluetooth & Wi-Fi MIDI support — connect to compatible external devices and software
• New upgrade structure — streamlined offerings with Practice Pack, MIDI Out, and All Access
• Smarter upgrade paths — discounted All Access upgrades for existing owners
• Improved purchase flow, entitlement handling, and upgrade experience
• Fixed: First note was sometimes silent
• Fixed: Missing language translations
Version 5.2: Bug fixes and performance enhancements
• Songs instantly repeat in single repeat mode
• Playhead scrubbing improvement
• Fixed startup crash on older iOS versions
Version 5.1: Export audio or MIDI files
• Save exactly what you hear as an MP3, M4A or WAV file.
• Export your changes as a new MIDI file.
• Improved UI for smaller screens.
Version 5.0: Powerful new controls, smarter practice tools, and a faster, more responsive experience:
• Per-track volume control for precise mixing
• Create and loop custom sections with ease
• Media library with playlists and song queue
• Save and instantly restore full mix states with Snapshots
• Multiple visual themes for clear, customizable note views
• Improved playback performance and responsiveness 5.3.1 4d ago Version 5.3: MIDI Out
MIDI Opener now lets you route playback to external MIDI hardware, synths, DAWs, and music apps. This release also simplifies upgrades with a new product structure built around Practice Pack, MIDI Out, and All Access.
• NEW: MIDI Out — send MIDI playback to external keyboards, synths, sound modules, DAWs, and CoreMIDI apps
• USB, Bluetooth & Wi-Fi MIDI support — connect to compatible external devices and software
• New upgrade structure — streamlined offerings with Practice Pack, MIDI Out, and All Access
• Smarter upgrade paths — discounted All Access upgrades for existing owners
• Improved purchase flow, entitlement handling, and upgrade experience
• Fixed: First note was sometimes silent
• Fixed: Missing language translations
Version 5.2: Bug fixes and performance enhancements
• Songs instantly repeat in single repeat mode
• Playhead scrubbing improvement
• Fixed startup crash on older iOS versions
Version 5.1: Export audio or MIDI files
• Save exactly what you hear as an MP3, M4A or WAV file.
• Export your changes as a new MIDI file.
• Improved UI for smaller screens.
Version 5.0: Powerful new controls, smarter practice tools, and a faster, more responsive experience:
• Per-track volume control for precise mixing
• Create and loop custom sections with ease
• Media library with playlists and song queue
• Save and instantly restore full mix states with Snapshots
• Multiple visual themes for clear, customizable note views
• Improved playback performance and responsiveness 5.3 May 26 Version 5.2: Bug fixes and performance enhancements
• Songs instantly repeat in single repeat mode
• Playhead scrubbing improvement
• Fixed startup crash on older iOS versions
Version 5.1: Export audio or MIDI files
• Save exactly what you hear as an MP3, M4A or WAV file.
• Export your changes as a new MIDI file.
• Improved UI for smaller screens.
Version 5.0: Powerful new controls, smarter practice tools, and a faster, more responsive experience:
• Per-track volume control for precise mixing
• Create and loop custom sections with ease
• Media library with playlists and song queue
• Save and instantly restore full mix states with Snapshots
• Multiple visual themes for clear, customizable note views
• Improved playback performance and responsiveness 5.2 May 21 Version 5.1: Export audio or MIDI files
• Save exactly what you hear as an MP3, M4A or WAV file.
• Export your changes as a new MIDI file.
• Improved UI for smaller screens.
Version 5.0: Powerful new controls, smarter practice tools, and a faster, more responsive experience:
• Per-track volume control for precise mixing
• Create and loop custom sections with ease
• Media library with playlists and song queue
• Save and instantly restore full mix states with Snapshots
• Multiple visual themes for clear, customizable note views
• Improved playback performance and responsiveness 5.1 May 16 Powerful new controls, smarter practice tools, and a faster, more responsive experience:
• Per-track volume control for precise mixing
• Create and loop custom sections with ease
• Media library with playlists and song queue
• Save and instantly restore full mix states with Snapshots
• Multiple visual themes for clear, customizable note views
• Improved playback performance and responsiveness 5.0 May 13 Version 4.3 Release Notes
New Features
• Import soundbanks directly from other apps
Open and load soundbank files straight from Files, Mail, Messages, and supported music apps without extra steps.
• Completely ad free
All ads have been removed for a faster, cleaner, more focused experience.
• Improved energy efficiency
Optimized background behavior and animation timing to reduce battery usage during extended sessions.
Fixes and Improvements
• Fixed a critical iOS 26 soundbank crash
Resolved a system level issue that could cause crashes when opening certain soundbanks on iOS 26.
• Updated styling for iOS 26
Refined layout and visual details to better match the latest iOS design system. 4.3 Jan 2 * QuickLook preview: From the Files app you can now see a song's info with a handy preview.
* Reduced ad placement
* Performance improvements
* Bug fixes 4.2.3 06/06/2023 Improved stability and sound quality. Re-enabled pretty background colors. Please get in touch if you experience issues with any MIDI files or sound banks. 4.2.2 05/23/2023 Crash recovery — some combinations of MIDI files and soundbanks are not yet supported. 4.2.1 05/17/2023 TLDR: Synchronized lyrics, 3D visualizer, bug fixes, new app icon
Welcome to the latest update of MIDI Opener! We've been hard at work making your MIDI experience even more enjoyable, and we're excited to introduce version 4.2. In addition to bug fixes, this update brings you some amazing new features that we believe will elevate your music journey, all at no additional cost. Plus there’s a new app icon.
NEW FEATURES
Lyrics Synced with Music:
Sing along with your favorite tunes! Our newly integrated lyrics feature allows you to view and follow the lyrics in real-time as the music plays. No need to search for lyrics elsewhere, it's all right here in MIDI Opener.
3D Note Visualizer:
Immerse yourself in your music like never before with our stunning new 3D Note Visualizer. Watch the notes flow in a captivating 3D environment, giving you a fresh perspective on your favorite MIDI tracks.
IMPORTANT BUG FIXES
Key Transpose Reset:
We've listened to your feedback and resolved an issue with key transposition. Now, when you load a new song, the app will automatically reset to the original key of that song, as expected.
Crashes:
Overall stability has been greatly improved.
At MIDI Opener, we always strive to provide you with the best possible experience. We hope that these new standard features will make your music exploration even more enjoyable. Please continue to share your feedback, and we'll keep working to make the app even better.
Happy listening and singing! 4.2 05/07/2023 Version 4.1 Update Release Notes
Summary of Version 4.0:
MIDI Opener 4.0 was a major update that introduced a completely rebuilt app with a new UI, displaying all notes in each track of the song. This version also brought the ability to mute or solo any track, change each track's instrument, and adjust the tempo. The app now comes bundled with a free song for users to explore the new features.
What's New in Version 4.1:
Key Transposition Feature: We've added a new key transposition feature, available in the Change Tempo upgrade, Full Upgrade, and Discounted Full Upgrade. Easily change the song's detected key a semi-tone at a time or up to three octaves in either direction.
Bug Fixes & Performance Optimization: We've addressed several bugs and improved the overall performance of the app for a smoother user experience.
Enhanced Graphic Equalizer: The graphic equalizer now features the ISO standard 10 frequency bands, allowing for more precise control over your audio.
Bundled Song Access: Tapping the logo in the upper left corner of the app now loads the bundled song with all upgrades enabled for free. Enjoy testing out all the app's expressive capabilities!
Sound Effects Feature: We'd like to remind our users that the sound effects feature is available to everyone on every song, allowing you to get creative with your music.
Update to MIDI Opener 4.1 today and experience the new key transposition feature, enhanced graphic equalizer, and more. As always, we appreciate your support and feedback. Happy music-making! 4.1 04/13/2023 Introducing MIDI Opener 4.0: Revolutionizing the MIDI player experience with all new track controls (mute, solo, change instrument) and effects (reverb, delay, distortion and equalizer).
Prepare to be dazzled by the latest and greatest version of MIDI Opener, the ultimate free MIDI player app that has taken the App Store by storm. Today, we're thrilled to announce the launch of MIDI Opener 4.0, a complete overhaul of the app, jam-packed with exciting new features designed to elevate your MIDI experience to unprecedented heights.
With a sleek, all-new user interface, MIDI Opener 4.0 now showcases every note in each track of your favorite songs, offering an immersive and visually stunning listening experience. But that's not all! This groundbreaking update also introduces a premium upgrade option that allows users to mute or solo any track in a song, providing full control over the composition and letting you tailor the music to your preferences.
Feeling creative? MIDI Opener 4.0 lets you unleash your imagination by giving you the power to change each track's instrument from a diverse selection of 128 General MIDI instruments. Customize your music like never before, and bring your favorite songs to life in entirely new ways with four effects filters: reverb, delay, distortion and equalizer.
To help you explore the app's groundbreaking features, MIDI Opener 4.0 comes bundled with a specially crafted song that demonstrates the full potential of the new track controls and adjustable tempo. This song loads by default if you haven’t loaded a song yet, and can be accessed at any time through the app’s Settings screen.
Don't miss out on the MIDI revolution! Download MIDI Opener 4.0 from the App Store today and experience the future of MIDI playback at your fingertips.
About MIDI Opener:
MIDI Opener is a cutting-edge, free MIDI player app that has transformed the way users interact with and enjoy MIDI music. Offering a range of customizable features and an intuitive interface, MIDI Opener has quickly become the go-to choice for MIDI enthusiasts worldwide. 4.0 04/03/2023 - Fixed problem with bad soundbanks
- Fixed autoplay issue 3.4 10/24/2022 Use your own soundbanks (SoundFont and DLS)!
Find .sf2 and .dls files at the website:
https://martianrover.com/midi-opener#soundbanks 3.3 10/23/2022 * Convenient BPM presets
* Discounted full upgrade if you've already purchased an upgrade 3.2 10/19/2022 Improvements
* Autoplay option
* Song title uses file name
* Elapsed and remaining times
* Many language translations
* Bug fixes 3.1 10/16/2022 Major update with new features, fixes and redesign!
* Now you can purchase upgrades to remove ads or change playback tempo.
* Dark mode!
* Support for older devices including iPad Mini 2nd generation
* Song name is displayed on screen
* Open website directly from app so that you can find MIDI files and contact us
Your comments are being heard! Please use the contact form or add an app review with feature requests. 3.0 09/19/2022 * Dramatically improved sounds.
* Offline support: saves last played song for convenient replay.
Thanks for using MIDI Opener! 2.0 06/06/2020 Updates for iOS 11 1.5 01/23/2018 Version 1.4.1:
* Fixed iOS 10 problem opening files from other apps
Version 1.4:
* Loop button controls playback repeat
Version 1.3:
* Sound plays in background when you leave the app or lock device
* You can control playback from the lock screen and control center 1.4.1 03/18/2017 Version 1.4:
* Loop button controls playback repeat
Version 1.3:
* Sound plays in background when you leave the app or lock device.
* You can control playback from the lock screen and control center. 1.4 03/16/2017 Version 1.3:
* Sound plays in background when you leave the app or lock device.
* You can control playback from the lock screen and control center.
Version 1.3.1:
* Bug fixes 1.3.1 02/07/2017 * Sound plays in background when you leave the app or lock device.
* You can control playback from the lock screen and control center. 1.3 02/06/2017
MIDI Opener version 4.3
Updated At: 2026-01-02
Changes: Version 4.3 Release Notes
New Features
• Import soundbanks directly from other apps
Open and load soundbank files straight from Files, Mail, Messages, and supported music apps without extra steps.
• Completely ad free
All ads have been removed for a faster, cleaner, more focused experience.
• Improved energy efficiency
Optimized background behavior and animation timing to reduce battery usage during extended sessions.
Fixes and Improvements
• Fixed a critical iOS 26 soundbank crash
Resolved a system level issue that could cause crashes when opening certain soundbanks on iOS 26.
• Updated styling for iOS 26
Refined layout and visual details to better match the latest iOS design system.
MIDI Opener version 4.2.3
Updated At: 2023-06-06
Changes: Jun 6, 2023
Version 4.2.3
* QuickLook preview: From the Files app you can now see a song's info with a handy preview.
* Reduced ad placement
* Performance improvements
* Bug fixes
MIDI Opener version 4.2.1
Updated At: 2023-05-17
Changes: May 17, 2023
Version 4.2.1
Crash recovery — some combinations of MIDI files and soundbanks are not yet supported.
MIDI Opener version 4.2
Updated At: 2023-05-07
Changes: May 7, 2023
Version 4.2
TLDR: Synchronized lyrics, 3D visualizer, bug fixes, new app icon
Welcome to the latest update of MIDI Opener! We've been hard at work making your MIDI experience even more enjoyable, and we're excited to introduce version 4.2. In addition to bug fixes, this update brings you some amazing new features that we believe will elevate your music journey, all at no additional cost. Plus there’s a new app icon.
NEW FEATURES
Lyrics Synced with Music:
Sing along with your favorite tunes! Our newly integrated lyrics feature allows you to view and follow the lyrics in real-time as the music plays. No need to search for lyrics elsewhere, it's all right here in MIDI Opener.
3D Note Visualizer:
Immerse yourself in your music like never before with our stunning new 3D Note Visualizer. Watch the notes flow in a captivating 3D environment, giving you a fresh perspective on your favorite MIDI tracks.
IMPORTANT BUG FIXES
Key Transpose Reset:
We've listened to your feedback and resolved an issue with key transposition. Now, when you load a new song, the app will automatically reset to the original key of that song, as expected.
Crashes:
Overall stability has been greatly improved.
At MIDI Opener, we always strive to provide you with the best possible experience. We hope that these new standard features will make your music exploration even more enjoyable. Please continue to share your feedback, and we'll keep working to make the app even better.
Happy listening and singing!
MIDI Opener version 4.1
Updated At: 2023-04-13
Changes: Apr 13, 2023
Version 4.1
Version 4.1 Update Release Notes
Summary of Version 4.0:
MIDI Opener 4.0 was a major update that introduced a completely rebuilt app with a new UI, displaying all notes in each track of the song. This version also brought the ability to mute or solo any track, change each track's instrument, and adjust the tempo. The app now comes bundled with a free song for users to explore the new features.
What's New in Version 4.1:
Key Transposition Feature: We've added a new key transposition feature, available in the Change Tempo upgrade, Full Upgrade, and Discounted Full Upgrade. Easily change the song's detected key a semi-tone at a time or up to three octaves in either direction.
Bug Fixes & Performance Optimization: We've addressed several bugs and improved the overall performance of the app for a smoother user experience.
Enhanced Graphic Equalizer: The graphic equalizer now features the ISO standard 10 frequency bands, allowing for more precise control over your audio.
Bundled Song Access: Tapping the logo in the upper left corner of the app now loads the bundled song with all upgrades enabled for free. Enjoy testing out all the app's expressive capabilities!
Sound Effects Feature: We'd like to remind our users that the sound effects feature is available to everyone on every song, allowing you to get creative with your music.
Update to MIDI Opener 4.1 today and experience the new key transposition feature, enhanced graphic equalizer, and more. As always, we appreciate your support and feedback. Happy music-making!
MIDI Opener version 4.0
Updated At: 2023-04-03
Changes: Apr 3, 2023
Version 4.0
Introducing MIDI Opener 4.0: Revolutionizing the MIDI player experience with all new track controls (mute, solo, change instrument) and effects (reverb, delay, distortion and equalizer).
Prepare to be dazzled by the latest and greatest version of MIDI Opener, the ultimate free MIDI player app that has taken the App Store by storm. Today, we're thrilled to announce the launch of MIDI Opener 4.0, a complete overhaul of the app, jam-packed with exciting new features designed to elevate your MIDI experience to unprecedented heights.
With a sleek, all-new user interface, MIDI Opener 4.0 now showcases every note in each track of your favorite songs, offering an immersive and visually stunning listening experience. But that's not all! This groundbreaking update also introduces a premium upgrade option that allows users to mute or solo any track in a song, providing full control over the composition and letting you tailor the music to your preferences.
Feeling creative? MIDI Opener 4.0 lets you unleash your imagination by giving you the power to change each track's instrument from a diverse selection of 128 General MIDI instruments. Customize your music like never before, and bring your favorite songs to life in entirely new ways with four effects filters: reverb, delay, distortion and equalizer.
To help you explore the app's groundbreaking features, MIDI Opener 4.0 comes bundled with a specially crafted song that demonstrates the full potential of the new track controls and adjustable tempo. This song loads by default if you haven’t loaded a song yet, and can be accessed at any time through the app’s Settings screen.
Don't miss out on the MIDI revolution! Download MIDI Opener 4.0 from the App Store today and experience the future of MIDI playback at your fingertips.
About MIDI Opener:
MIDI Opener is a cutting-edge, free MIDI player app that has transformed the way users interact with and enjoy MIDI music. Offering a range of customizable features and an intuitive interface, MIDI Opener has quickly become the go-to choice for MIDI enthusiasts worldwide.
MIDI Opener version 3.4
Updated At: 2022-10-24
Changes: Oct 24, 2022
Version 3.4
- Fixed problem with bad soundbanks
- Fixed autoplay issue
MIDI Opener version 2.0
Updated At: 2020-06-06
Changes: Jun 6, 2020 Version 2.0
* Dramatically improved sounds.
* Offline support: saves last played song for convenient replay.
Thanks for using MIDI Opener!
MIDI Opener version 1.5
Updated At: 2018-01-23
Changes: Jan 23, 2018 Version 1.5
Updates for iOS 11
