VAPoly16 is a virtual analog bitimbral polyphonic synthesizer available for iPhone, iPad, and Mac, developed by Ryo Togawa. It offers a comprehensive set of features including a 16 voice synthesizer, effects, sequencer, and audio visualization tools. The synthesizer operates both as a stand-alone application and as an AudioUnit Extension (AUv3), supporting Ableton Link, MIDI, and audio file export.

The synthesizer comprises two 8 voice synthesizers, each with two oscillators, two ADSR envelopes, resonant high pass and low pass filters, and an amplifier per voice. Featuring a wide range of modulation options and classic analog sound modeled filters, VAPoly16 also includes effects like delay, chorus, flanger, reverb, EQ, and compressor. The sequencer allows for programming 16 bar patterns per clip with parameter automation, and project files can be saved on iCloud Drive for easy access across devices.