Best screenwriting app for ipad

I have tried many ipad screenwriting apps, but Storyist is by far the best, for me. It is everything that I wanted from a screenwriting app and more. Storyist has most def has allot going for it. Very easy to import/export screenplays from ipad to desktop... e-mail... drop box etc... I do like how you can move from the script to a story index card for a better visual outlook. I would like to see in future versions a revision mode colour coded. That would be most excellent. Keep up the good work... btw... I was having some issues with storyist, sent them an e-mail, got a response immediately, and the issue was resolved. Great!!! Thanks.

The good The bad The ugly 2011 about Storyist, v2.1