SongMine - Songmine is a free online tool for discovering and recording chord progressions with your favorite DAW.
FL Studio Mobile - Create & save multi-track music projects on a smartphone
lightnote - An interactive site to learn the basics of music theory 🎶
Audulus - A universe of sound at your fingertips - Audulus is a modular music processing app
G-Stomper Studio - G-Stomper Studio is a feature-packed, mobile music production tool.
Auxy Music Studio - Auxy brings real music creation to iPhone in a simple and inspiring format.