I found a use for android devices with the ToneWoodAmp. You can use a male to male 3.5 mm (1/8 in) TRRS (Tip Ring Ring Sleeve) plug that has four conductors, as an input from your phone to play music or drum loops from your phone. Changing the setting to serial will play the music with no effects and parallel will have the effects applied to the music.
Uses are playing along with prerecorded music, drum samples or backing tracks.
Tried to test out an external effect (looper) from Output to Insert but couldn't find a correct cable.
Has anyone else done anything like this?
If you'd like to use your looper, I'd recommend plugging it in between your guitar and TWA!