Please visit the Kickstarter project page: iPhly.org/ks.It's all in the wrist. Roll the phone to roll. Tilt down to pitch down. Swipe up to throttle up. Swipe side-to-side to yaw.
You can store as many model memories as you like. You can give them long names. You can photograph your models using the iPhone's camera. Seven-segment displays on a TX are so last century.
The software is GPL. The schematics and SVN are on iPhly.org. The app is in the app store (if you don't want to compile your own). I am using KS to raise money for a production run.
Please visit the Kickstarter project page: iPhly.org/ks and share with your pilot friends.