Fractal Bits is a drum synth with over four billion unique sounds created by fractal algorithms.
Each set of 12 drums corresponds to a code of 8 characters (you can save/copy/paste it as plain text).

Features:
* search for new sounds with three buttons: next random set, edit code, previous set;
* three types of keyboards for live drumming: on-screen buttons, PC keyboard, USB MIDI input (Android 6+);
* several processing parameters + control via MIDI;
* real-time audio recording to WAV (32-bit);
* export to: WAV (one file or a set), SunVox (samples + effects in one file), text clipboard;
* the LCK button freezes individual drums - they will not change during the search for new sets.

Double clicking on a parameter opens a window for setting the exact value.

If you enable the Hold option, the notes will play endlessly, without reacting to key release (noteOff) events; turning the note on again works like turning it off; there are two ways to enable this option:
1) using the Hold parameter in the "MIDI Mapping" window;
2) by pressing the HOLD button, which appears in place of LCK while playing the musical keyboard: press HOLD, release the desired notes - then the released notes will continue to play.

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