Launch Buttons - Live Control

THIS APP DOES NOT PLAY AUDIO BECAUSE IT'S A MIDI CONTROLLER FOR ABLETON LIVE
Launch Buttons is a MIDI controller that lets you perform your tracks wherever you go. You don't need to carry your expensive gear; your phone/tablet is just about enough. Works with virtually any DAW after a very simple set up. Ableton + Launchpad 95 script is recommended.
This free version gives you access to all 64 buttons on the 8x8 grid, 8 scene launch buttons, 8 buttons to navigate and 7 buttons for transport controls. The Launchpad95 script gives you a step sequencer, scale mode, and many more functions.
The Apple Watch extension lets you access about one fifth of the Buttons. This means that you can use the app to control a 3x3 clip launchers, 3 scene launchers, and 4 arrow keys to navigate through your clips. It also can display some of the buttons used for step sequencing, good enough for a little stunt in a live set I'd say.
It includes the the "old" colors (red-orange-yellow-green) - if you want to upgrade, Launch Buttons Plus provides you with
- full color support (RGB)
- 16 more functions buttons (in addition to the 16 you already have)
- 16 freely assignable knobs

Have fun :)