n-Track 8 - Audio and music recording, editing and mixing software for Windows, Mac, iOS and Android. Record your music easily from your computer or smartphone.
Cubasis - Cubasis is Steinberg’s streamlined, multitouch sequencer for the iPad.
PocketBand Lite - PocketBand Lite is a full-featured music composition environment for Android devices.
FamiStudio - FamiStudio is very simple music editor for the Nintendo Entertainment System or Famicom. It is designed to be easier to use than FamiTracker, but its feature set is also much more limited.
Auria - Multitrack Digital Audio Workstation for iPad.
SunVox - SunVox is a small, fast and powerful modular synthesizer with pattern based sequencer (tracker).