I had a little time to try this on a few Android tablets. A few of comments:
* Orientation and resolution issues. When you first open the app up in landscape mode, it actually starts in "portrait" mode and then is scrunched to the center of the screen. Re-orientating the device a couple times will then stretch the interface more suitably.
* The project list should be displayed in a simple list view, not large icon view since all we see are blank folder images anyway. On small resolutions the current implementation makes it difficult to read the project names and also consumes a lot more visible space.
* The font is far too large with no customization. On my 10.1" tablet in landscape view with button bar and keyboard visible there are only three lines of code visible. In portrait mode most lines of code will require scrolling to see due to how large the font is.
* Auto-complete needs work. The auto-complete system should also pre-populate with parentheses and placeholder data that you can then enter for each parameter. Right now it will only complete the base function name but expect you to know precisely the type of parameters and then fill them out manually.
I would recommend TGC review popular existing code IDEs for mobile to get inspiration of how they handle code sizing, auto-completion and other mobile-specific optimizations. I also was unable to use a "hardware" keyboard such as that through an emulator with this app.