VAPolyMkII 4+

Bitimbral Poly Synthesizer

Ryo Togawa

    • $5.99


*** Spring Sale until Apr 30. (Regular price $14.99) ***

VAPolyMkII is a virtual analog bitimbral polyphonic synthesizer for iPhone, iPad and Mac. It features 16 voice synthesizer, effects, sequencer and audio visualization tools. It operates as a stand alone or as an AudioUnit Extension (AUv3). Stand Alone supports Ableton Link, MIDI and audio file export.

The synthesizer consists of two 8 voice synthesizer, which features two oscillators, two ADSR envelopes, resonant high pass and low pass filter and an amplifier per voice. The oscillators features continuously variable wave shape and wide variety of modulation. The filters are modeled on the Sallen-Key filter circuit and cascaded OTA filter circuit for classic analog sound. The Effects include delay, chorus, flanger, reverb, eq and compressor. The sequencer features piano roll and parameter automation editor to program 16 bar pattern per clip. Project files can be saved in iCloud Drive, so that the project can be accessed from iPhone, iPad or Mac.

- Main Features -
Virtual analog 16 voice bitimbral polyphonic synthesizer
Two type of Lowpass filter, cascaded OTA model and Sallen-key model.
Patch points for modulation.
Support MIDI 2.0
New User Interface built by SwiftUI for improved performance and to ensure compatibility of future OS.
Built-in Sequencer. 16 bar patterns per clip. Total 8 clips. Piano Roll and Parameter automation.
Support Audio Unit Extension (AUv3)
Works on iPhone, iPad and Mac. Support iCloud Drive to share project files between the platforms.
Audio Export. Linear PCM format (AIFF, WAV and CAF) and compressed format (AAC)
Support Ableton Link, Bluetooth MIDI, MIDI In / Out.

- System Requirements -
AudioUnit Extension (AUv3) requires host application which support AudioUnit Extension.
AudioUnit Extension is supported by Apple Logic and Apple Garage Band on iOS and macOS. For any other DAW, it depends on the application and some of them don’t support AudioUnit Extension.

What’s New

Version 1.2.0

Version 1.2.0 contains improvements and bug fixes.
- Added 150 factory presets.
- Fixed a problem that audio visualizer doesn’t update properly when note is changed.
- Fixed a problem that patch connections are not updated when factory preset is changed.

Ratings and Reviews


Don’t listen to the other idiot reviewer

What a guy can’t even reach out for help just leaves a negative comment ! You are a hard working dev and always updating his apps and fixes any bugs that pop off which I haven’t had one personally. Try restarting your iPad iPhone first because a lot of the time the auv3 portion of the app doesn’t show in many apps till a restart is done. I seriously cannot believe the nerve of some people! Great dev synth is 5* sound Is XL!

Nitpick Pete ,

Zero stars. App immediately crashes; won’t open


App Privacy

The developer, Ryo Togawa, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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