How To Research The Next Big App
jaysonfeltner.com
After developing a top performing app, learn how I researched the idea to create a sure fire winner in the app store.
jaysonfeltner.com
Maybe PhoneGap...balsamiq...plus there are lots of apps for prototyping using an iPad.
The article also advises to find your niche...be careful of going too specialized - there are thousands of apps around and getting too specialized could be detrimental since so many other apps might cover your niche plus many others (like teaching only addition when other math educational apps teach other operations in addition to addition)