VAPolyMkII Bitimbral Virtual Analog Synth For iOS & Mac

Developer Ryo Togawa has introduced VAPolyMkII, a virtual analog bitimbral polyphonic synthesizer for iPhone, iPad and Mac.

VAPolyMkII is a 16-voice synthesizer, with effects, sequencer and audio visualization tools. It operates standalone 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.


  • 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.

Pricing and Availability:

VAPolyMkII is available now for $5.99 USD.

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