Giada - Giada is a free, minimal, hardcore audio tool for DJs, live performers and electronic musicians.
FL Studio Mobile - Create & save multi-track music projects on a smartphone
JAM - Shake your sound - Music motion app. Make music by shaking your phone. 🎶
Splice Beat Maker - Make and share beats in your browser
Blocs Wave - A free audio app for creating music loops.
Type Drummer - Drum by typing