About VOSIS Pro
VOSIS is a synthesizer combining audification of greyscale pixel data with several image filters. It is a tool for image sonification, visual music composition, and experimental sound design. The audification of pixel...
VOSIS is a synthesizer combining audification of greyscale pixel data with several image filters. It is a tool for image sonification, visual music composition, and experimental sound design. The audification of pixel luminance values creates shape-timbre relationships. Pixel scan rate is controlled in terms of note interval, octave, and scale to give varying pitch between image regions. The ADSR envelope allows one to play images as a non-linear sequence of pitches with varying wavetable/timbre. VOSIS Pro adds several features to VOSIS useful for sound designers and musicians: Save and load custom presets, connect a MIDI keyboard and play regions with keys, map any control and region positions to MIDI CC, unlimited recording and screen mirroring with no watermark, downsampling/blur/sharpen, and tremolo filters, subdivide large regions into step sequence mode, load video files (iPad and Desktop versions only). Visit vosis.app for sound example, demo videos, and user guide!
Version History - HEIC image support - External displays will show only the image without UI 2.2.5 Apr 27 Fixed crash on iPhone Air 2.2.3 12/28/2025 Improved IAA support, app can now be launched directly from IAA hosts without resizing issues. Removed Background Audio button as audio is now always run in background for improved IAA host support. 2.2.2 07/09/2024 Updated Limiter DSP with smoother response 2.2.0 04/24/2024 - Added Double-tap to remove Looping regions - Fixed a bug that could occasionally cause the app to crash when loading from AudioBus 2.1.9 11/05/2023 - Fixed occasional freeze when re-entering the app 2.1.8 10/08/2023 Improved gain clipping when recording 2.1.6 09/15/2023 - Fixed resizing issue with AUM and AudioBus - Improved stability when bringing app in and out of background 2.1.4 06/10/2023 - Added option to enable audio when app is in background - Repaired Inter-App Audio compatibility with AUM and AudioBus 2.1.3 05/11/2023 Improved sound engine: - Raw duration scanning (matches sound of original VOSIS 1.0 2014-2021) - New Granular engine for region Durations - cleaner, artifact-free time-stretched sounds - Improved Limiter and fixed possible distortion issues when recording with polyphony or gain over 0dB Note Stealing added for MIDI and Touch Regions. Fixed frame rate issues when switching between cameras. Fixed IAA and Audiobus Support. 2.1.2 12/06/2022 Fixed IAA and Audiobus Support Improved sound engine: - Raw duration scanning (matches sound of original VOSIS 1.0 2014-2021) - New Granular engine for region Durations - cleaner, artifact-free time-stretched sounds - Improved Limiter and fixed possible distortion issues when recording with polyphony or gain over 0dB Note Stealing added for MIDI and Touch Regions. Fixed frame rate issues when switching between cameras. 2.1.1 11/26/2022 Improved sound engine: - Raw duration scanning (matches sound of original VOSIS 1.0 2014-2021) - New Granular engine for region Durations - cleaner, artifact-free time-stretched sounds - Improved Limiter and fixed possible distortion issues when recording with polyphony or gain over 0dB Note Stealing added for MIDI and Touch Regions. Fixed frame rate issues when switching between cameras. 2.1.0 11/24/2022 AUDIOBUS and Inter-App Audio Support 1.0.2 04/15/2022 1.0.1 04/12/2022
Previous Versions
Here you can find the changelog of VOSIS Pro since it was posted on our website on 2025-09-29 10:17:34.
The latest version is 2.2.5 and it was updated on 2026-06-24 14:59:03. See below the changes in each version.
VOSIS Pro version 2.2.5
Updated At: 2026-06-03
Changes: Version History - HEIC image support
- External displays will show only the image without UI 2.2.5 Apr 27 Fixed crash on iPhone Air 2.2.3 12/28/2025 Improved IAA support, app can now be launched directly from IAA hosts without resizing issues. Removed Background Audio button as audio is now always run in background for improved IAA host support. 2.2.2 07/09/2024 Updated Limiter DSP with smoother response 2.2.0 04/24/2024 - Added Double-tap to remove Looping regions
- Fixed a bug that could occasionally cause the app to crash when loading from AudioBus 2.1.9 11/05/2023 - Fixed occasional freeze when re-entering the app 2.1.8 10/08/2023 Improved gain clipping when recording 2.1.6 09/15/2023 - Fixed resizing issue with AUM and AudioBus
- Improved stability when bringing app in and out of background 2.1.4 06/10/2023 - Added option to enable audio when app is in background
- Repaired Inter-App Audio compatibility with AUM and AudioBus 2.1.3 05/11/2023 Improved sound engine:
- Raw duration scanning (matches sound of original VOSIS 1.0 2014-2021)
- New Granular engine for region Durations - cleaner, artifact-free time-stretched sounds
- Improved Limiter and fixed possible distortion issues when recording with polyphony or gain over 0dB
Note Stealing added for MIDI and Touch Regions.
Fixed frame rate issues when switching between cameras.
Fixed IAA and Audiobus Support. 2.1.2 12/06/2022 Fixed IAA and Audiobus Support
Improved sound engine:
- Raw duration scanning (matches sound of original VOSIS 1.0 2014-2021)
- New Granular engine for region Durations - cleaner, artifact-free time-stretched sounds
- Improved Limiter and fixed possible distortion issues when recording with polyphony or gain over 0dB
Note Stealing added for MIDI and Touch Regions.
Fixed frame rate issues when switching between cameras. 2.1.1 11/26/2022 Improved sound engine:
- Raw duration scanning (matches sound of original VOSIS 1.0 2014-2021)
- New Granular engine for region Durations - cleaner, artifact-free time-stretched sounds
- Improved Limiter and fixed possible distortion issues when recording with polyphony or gain over 0dB
Note Stealing added for MIDI and Touch Regions.
Fixed frame rate issues when switching between cameras. 2.1.0 11/24/2022 AUDIOBUS and Inter-App Audio Support 1.0.2 04/15/2022 1.0.1 04/12/2022
VOSIS Pro version 2.2.3
Updated At: 2025-12-28
Changes: Fixed crash on iPhone Air
VOSIS Pro version 2.2.0
Updated At: 2024-04-24
Changes: Apr 24, 2024
Version 2.2.0
Updated Limiter DSP with smoother response
Disclaimer
Official App Store Link
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