Dawvelopment released DAW IT, a free multifunctional MIDI application for android that provides 4 advanced MIDI utilities.
Use your mobile devices to control MIDI instruments within your DAW
Add Expression to your music by taking advantage of all those great parameters that modern soft synths offer
Use your fingers to control your DAW by assigning commands and macros to the Buttons section
More info and free download here: Dawvelopment | DAW IT