I like it. Worth a dollar...
Ok this is not the most expansive app you could imagine. But it is Great. First it is an introduction to the "Processing Language" ,, great another language! It is just like a simple C to me, with many graphic commands/functions,etc. The author takes you through developing a program, very nice. Best is it has the best editor and then a compiler for the IPad! I was writing programs for the IPad in minutes! What can be done with this I am not sure. You can certainly write sketches on the editor and send them to your Arduino! Buy it there is a lot more too!
Joemac2013 about
Processing for dummies