About isfizz
isfizz is a SFZ file player. SFZ is an open text format for sampled sound instruments. This app can load SFZ and play the instrument. - Includes Audio Unit Extension (AUv3). - You can edit SFZ string. - The app loads SFZ...
isfizz is a SFZ file player. SFZ is an open text format for sampled sound instruments. This app can load SFZ and play the instrument. - Includes Audio Unit Extension (AUv3). - You can edit SFZ string. - The app loads SFZ files in place without copying the files. - Double tap to enter the value, triple tap to reset. - Supports Scala tuning files (.scl). - Supports MIDI. - Supports 16 out. use the "output=N" opcode in SFZ. Supported sample file format: - .wav (raw PCM) - .aiff - .mp3 - .flac - .ogg (vorbis) - .wv (wavpack) This app is an iPhone/iPad port of sfizz-ui project. The app is made from some sfizz-ui codes and images. About half of the income from this app will be donated to SFZ Tools team. This app and the description contain machine translated text.
Version History Added the minimum note duration settings. Useful for electric drums. 1.4 Mar 24 The preferred UI size for the plugins has been set. 1.3.19 Mar 21 I've adjusted the appearance when text size is changed in iPhone/iPad settings. Other fixes. 1.3.18 10/22/2025 Fixed an issue that prevented "Prevent Sleep" from working. 1.3.17 10/29/2024 Fixed a "OFFLINE" rendering bug. 1.3.16 10/15/2024 Fixed an issue that prevented Logic Pro from sounding. 1.3.15 08/26/2024 Fixed an issue that prevented the "Add reverb by adding opcodes" function from working. Note that this function only works under certain conditions. Optimized source code. 1.3.14 08/25/2024 Fixed an issue that caused some samples to be released unexpectedly. 1.3.13 08/22/2024 Fixed an issue that prevented the SFZ files from loading when "Add reverb by adding opcodes" was enabled and the files contained "/* */" comments. 1.3.12 08/21/2024 v1.3.10: Modified the behavior to ignore past MIDI packets, resolving the issues like initial silence in BeatMaker 3. Enhanced compatibility by making the loading of SFZ files case insensitive in .bank.xml. v1.3.11: A crash bug has been fixed. 1.3.11 05/16/2024 Modified the behavior to ignore past MIDI packets, resolving the issues like initial silence in BeatMaker 3. Enhanced compatibility by making the loading of SFZ files case insensitive in .bank.xml. 1.3.10 05/16/2024 The maximum number of files that can be opened internally has been increased. 1.3.9 04/16/2024 Small changes. 1.3.8 03/25/2024 Some improvement and some fixes. 1.3.7 02/29/2024 Changed process for background images. Fixed some crash bugs. 1.3.6 02/28/2024 Fixes an issue that caused stuck notes. 1.3.5 02/23/2024 Some internal optimizations. Fixed a problem that prevented files from being opened especially in the older system. Added support for image opcodes. Fixed a problem with adding reverb. 1.3.4 02/22/2024 Fixed a bug in which the level meter was reversed left to right. Fixed a bug in which knobs were not updated. Some improvement. 1.3.3 02/14/2024 Fixed an issue that caused noises when loading files on 16-out. 1.3.2 02/13/2024 Fixed a bug that caused terrible gain in the later outputs in 16 out. 1.3.1 02/13/2024 Added a Multiple Output function for Audio Unit (isfizz 16 Out). Improved stability. 1.3 02/11/2024 Much improved performance. Much improved the memory footprints. (Multiple instances shares the memory of samples.) 1.2.13 02/05/2024 v1.2.11: Improved performance. (There were bugs in the engine.) Improved memory management. v1.2.12: Fixed a crash bug when deallocating the Audio Unit. Fixed a bug that some settings were not saved. 1.2.12 02/03/2024 Improved performance. (There were bugs in the engine.) Improved memory management. 1.2.11 02/01/2024 Updated the sfizz engine. Improved file loading (now case-insensitive). Added support for some opcodes. 1.2.10 01/28/2024
Previous Versions
Here you can find the changelog of isfizz since it was posted on our website on 2026-01-25 02:02:36.
The latest version is 1.4 and it was updated on 2026-06-11 13:15:32. See below the changes in each version.
isfizz version 1.4
Updated At: 2026-06-11
Changes: Version History Added the minimum note duration settings. Useful for electric drums. 1.4 Mar 24 The preferred UI size for the plugins has been set. 1.3.19 Mar 21 I've adjusted the appearance when text size is changed in iPhone/iPad settings.
Other fixes. 1.3.18 10/22/2025 Fixed an issue that prevented "Prevent Sleep" from working. 1.3.17 10/29/2024 Fixed a "OFFLINE" rendering bug. 1.3.16 10/15/2024 Fixed an issue that prevented Logic Pro from sounding. 1.3.15 08/26/2024 Fixed an issue that prevented the "Add reverb by adding opcodes" function from working. Note that this function only works under certain conditions.
Optimized source code. 1.3.14 08/25/2024 Fixed an issue that caused some samples to be released unexpectedly. 1.3.13 08/22/2024 Fixed an issue that prevented the SFZ files from loading when "Add reverb by adding opcodes" was enabled and the files contained "/* */" comments. 1.3.12 08/21/2024 v1.3.10:
Modified the behavior to ignore past MIDI packets, resolving the issues like initial silence in BeatMaker 3.
Enhanced compatibility by making the loading of SFZ files case insensitive in .bank.xml.
v1.3.11:
A crash bug has been fixed. 1.3.11 05/16/2024 Modified the behavior to ignore past MIDI packets, resolving the issues like initial silence in BeatMaker 3.
Enhanced compatibility by making the loading of SFZ files case insensitive in .bank.xml. 1.3.10 05/16/2024 The maximum number of files that can be opened internally has been increased. 1.3.9 04/16/2024 Small changes. 1.3.8 03/25/2024 Some improvement and some fixes. 1.3.7 02/29/2024 Changed process for background images.
Fixed some crash bugs. 1.3.6 02/28/2024 Fixes an issue that caused stuck notes. 1.3.5 02/23/2024 Some internal optimizations.
Fixed a problem that prevented files from being opened especially in the older system.
Added support for image opcodes.
Fixed a problem with adding reverb. 1.3.4 02/22/2024 Fixed a bug in which the level meter was reversed left to right.
Fixed a bug in which knobs were not updated.
Some improvement. 1.3.3 02/14/2024 Fixed an issue that caused noises when loading files on 16-out. 1.3.2 02/13/2024 Fixed a bug that caused terrible gain in the later outputs in 16 out. 1.3.1 02/13/2024 Added a Multiple Output function for Audio Unit (isfizz 16 Out).
Improved stability. 1.3 02/11/2024 Much improved performance.
Much improved the memory footprints. (Multiple instances shares the memory of samples.) 1.2.13 02/05/2024 v1.2.11:
Improved performance. (There were bugs in the engine.)
Improved memory management.
v1.2.12:
Fixed a crash bug when deallocating the Audio Unit.
Fixed a bug that some settings were not saved. 1.2.12 02/03/2024 Improved performance. (There were bugs in the engine.)
Improved memory management. 1.2.11 02/01/2024 Updated the sfizz engine.
Improved file loading (now case-insensitive).
Added support for some opcodes. 1.2.10 01/28/2024
isfizz version 1.3.18
Updated At: 2025-10-22
Changes: I've adjusted the appearance when text size is changed in iPhone/iPad settings.
Other fixes.
Disclaimer
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