While bored at local sportsball games where my children were cheerleaders, I entertained myself by developing this small game on my Android phone. The Android IDE AIDE comes with easy project templates, and one of them is the LibGDX game library. I also created the art assets on-device with the Photo Editor app.
I wanted to prove the feasibility of total application development on device - I now feel that was misguided. While feasible in the strictest sense, it was a rather huge pain in the heinie, however this is likely a limitation of my device, not of the tools, which were very capable.