About PSOFT Audio Player
“Freely manipulate sound with incredibly natural results.” Make the comparison with your own ears. This music player makes it easy to independently change your music's key and playing speed and remove or extract specified...
“Freely manipulate sound with incredibly natural results.” Make the comparison with your own ears. This music player makes it easy to independently change your music's key and playing speed and remove or extract specified sounds, while preserving an overwhelming audio quality that cannot be matched. Recommended for: ・ Musical instrument practice. ・ Making karaoke tracks. ・ Musical transcription. ・ Creating audio tracks for dance practice. ・ Learning foreign languages by listening to podcasts. ・ Efficiently gathering information from podcasts. ・ Audio-typing comfortably. With usual audio equipment, large changes to key and playing speed typically result in a heavy degradation of the audio quality. However, by using our company's “PhaseGear” technology, this app succeeds in reducing audio degradation to its utmost minimum. The result is surprisingly natural-sounding audio. ============== [ Main Features ] ============== ▼ Change playing speed [Time stretch] Change the playing speed without affecting the key (0.00x - 4.00x). ▼ Change key [Pitch shift] Change the key without affecting the playing speed (±24.00 semitones). ▼ Change voice [Formant] Apply changes to voices (±24.00). Includes the [Correction] function which restrains voice alterations caused by changing the key. ▼ Remove / extract sounds [Audio masking] Visualize the audio and remove / pick out sound from a specified band. Obtain exceptional audio quality thanks to a new technology preventing mixing in rhythm sound. * Depending on the musical structure, it might not be possible to obtain the desired results. ▼ Analyze audio and display chords [Musical scale analysis] Analyzes music as it plays and displays the musical scale on a keyboard. Also allows on-screen display of inferred chords. ▼ Output the modified audio [Export (*Add-on)] Output the audio data file with modified key, sound masking, etc. The exported file can also be used with a PC or other device. * This function must be purchased as an add-on. ====================================== ■ Specifications - Play menu - Play / Pause - Skip 15s / Back 15s (*Only available on 4 inch displays) - Fast forward / Rewind - Next song / Previous song - Play position adjustment slider - Play mode - Play all songs - Repeat all songs - Play 1 song - Repeat 1 song - Shuffled play - Shuffled repeat - Share song information - Send the current song info to other apps, share functionality. - Select songs by - Playlist - Song - Artist - Album - Composer - Genre - Compilation - Podcast - Audiobook - Document - Supports background play * Note Contents on iCloud and protected contents not supported. ■ About PhaseGear PhaseGear is our company's audio signal processing engine based on patented technology. It implements high quality time stretch and pitch shift processing as well as superior sound masking. Please refer to the link below for more details about this technology. (*In Japanese) http://www.psoft.co.jp/jp/corporate/technology/phasegear.html * Patent registered in Japan, USA and South Korea.
Version History - Fixed an issue where the chords analysis results were not displayed correctly. 1.15 May 13 - Fixed an issue that caused the app to crash when an audio file was opened from another app. 1.14 Apr 21 - Support for iOS 26. - Updated requirements: iOS 15.6 and up is now required. 1.13 11/20/2025 - Fixed a problem where the app was not responding to operations from remote controls. 1.12 12/17/2018 - Fixed a problem that was preventing switching between playback and pause using remote controls. 1.11 12/10/2018 - You can now seek from the Control Center and Lock screen. - Minor bug fixes. 1.10 12/06/2018 - Added support for the Files app. - Fixed a problem where the audio effects completely stopped functioning under specific conditions such as after iOS updates. 1.09 09/27/2018 - Fixed a problem where the display order of the document files was changing. - Minor bug fixes. 1.08 06/05/2018 - Support for iOS 11. - Updated requirements. iOS 10 and up is now required. 1.07 09/29/2017 - Fixed crash problem in the media selection screen. - Updated requirements. iOS 8 and up is now required. 1.06 11/09/2015 - Stops playback when the output device (earphones, etc.) is disconnected during playback. 1.05 07/13/2015 - Minor bug fixes. 1.04 12/31/2014 - Fixed a bug where part of the GUI had a low resolution on iPhone 6 Plus with iOS 8.1. - Compatible with iPhone 6 and 6 Plus. 1.03 11/13/2014 - Fixed problems under iOS 8. 1.02 10/06/2014 - New sound masking preset: "Rhythm and Bass". - Fixed a problem with "Review this app" in the Information window. 1.01 08/11/2014 1.0 07/23/2014
Previous Versions
Here you can find the changelog of PSOFT Audio Player since it was posted on our website on 2016-09-24 16:04:00.
The latest version is 1.15 and it was updated on 2026-06-27 08:19:51. See below the changes in each version.
PSOFT Audio Player version 1.15
Updated At: 2026-06-07
Changes: Version History - Fixed an issue where the chords analysis results were not displayed correctly. 1.15 May 13 - Fixed an issue that caused the app to crash when an audio file was opened from another app. 1.14 Apr 21 - Support for iOS 26.
- Updated requirements: iOS 15.6 and up is now required. 1.13 11/20/2025 - Fixed a problem where the app was not responding to operations from remote controls. 1.12 12/17/2018 - Fixed a problem that was preventing switching between playback and pause using remote controls. 1.11 12/10/2018 - You can now seek from the Control Center and Lock screen.
- Minor bug fixes. 1.10 12/06/2018 - Added support for the Files app.
- Fixed a problem where the audio effects completely stopped functioning under specific conditions such as after iOS updates. 1.09 09/27/2018 - Fixed a problem where the display order of the document files was changing.
- Minor bug fixes. 1.08 06/05/2018 - Support for iOS 11.
- Updated requirements. iOS 10 and up is now required. 1.07 09/29/2017 - Fixed crash problem in the media selection screen.
- Updated requirements. iOS 8 and up is now required. 1.06 11/09/2015 - Stops playback when the output device (earphones, etc.) is disconnected during playback. 1.05 07/13/2015 - Minor bug fixes. 1.04 12/31/2014 - Fixed a bug where part of the GUI had a low resolution on iPhone 6 Plus with iOS 8.1.
- Compatible with iPhone 6 and 6 Plus. 1.03 11/13/2014 - Fixed problems under iOS 8. 1.02 10/06/2014 - New sound masking preset: "Rhythm and Bass".
- Fixed a problem with "Review this app" in the Information window. 1.01 08/11/2014 1.0 07/23/2014
PSOFT Audio Player version 1.13
Updated At: 2025-11-20
Changes: - Support for iOS 26.
- Updated requirements: iOS 15.6 and up is now required.
PSOFT Audio Player version 1.12
Updated At: 2018-12-17
Changes: Dec 17, 2018
Version 1.12
- Fixed a problem where the app was not responding to operations from remote controls.
PSOFT Audio Player version 1.06
Updated At: 2014-07-24
Disclaimer
Official App Store Link
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