Grab a copy of Livecode (the open source version) and you could possibly have something rough working within a day or two.
[Making it 100% perfect will take many months; in programming, the last 5% of the code takes around the last 95% of the overall time].
Livecode uses it's own near-English language [revolution] and your programs/apps can be built for any platform - iOS, Android, Windows, Mac, Linux etc.
For a more complex but vastly more powerful system, get Marmalade.
With that, you work in C (C++) and have full access to the device graphics hardware etc., so you can do anything from simple apps up to full 3D games and animations.
Again you can select what to build you program for, you don't have to use different languages for different devices.
Livecode:
https://livecode.com/
Marmalade
https://www.madewithmarmalade.com/
Some marmalade examples & info:
http://docs.madewithmarmalade.com/display/MD/cplusplustutorial