Any idea for cram Chinese character on Android?

My method is to use Pleco (with flashcard add-on) + Pen&Paper.
It has better quality dictionaries than Skitter and it also has a much higher degree of customization. But you still Pen&Paper to practice writing...

but why are you here on skritter writing this :) ?

Skritter is still the best option I know for the PC+Wacom combination. And where else is there a forum for people that like cramming Chinese character writing using technology?

Its not perfect but a while back someone posted a link that allows you to use skritter on android. I use it sometimes when im desperate.