Welcome ArduinoDroid - Arduino IDE for Android

rmm200:
Only thing I see that may be missing is a serial monitor.
Works great on the Nexus 7 to an Arduino Uno R3 (needs OTG USB adapter) - but I sure would like to see debugging messages.
Or can I do that with ArduinoCommander?

I'm going to add integration code fpr 3rd-party apps so you will be able to use any existing serial monitor for this.