PixelWave is an experimental wavetable synth with old school pixel interface.

Key features:
• it is possible to draw waveform and play it at the same time;
• export to WAV;
• nine predefined waveforms;
• changeable number of octaves (from 2 to 6);
• USB MIDI input (Android 6+).

Known solutions for some problems:
https://warmplace.ru/android