As I mentioned some time ago in another thread I was making a non game application with cocos2d-x. I’m currenty waiting for approval for the App Store but you can already see a short video from my app on youtube: http://www.youtube.com/watch?v=1KkDdTU4vN0 I hope you like it 
Impressive app with cocos2d-x, can u write a tutorial :v, i guess many people like this
Thanks and sorry but it would be quite difficult to write a tutorial on how to write the whole app. Anyway app was accepted and it is now available on the app store: http://itunes.apple.com/us/app/id626142953 As long as I have promocodes for current version I will give a free promocode to everyone on this forum who wants it so if someone is interested just send me a PM message or contact me through app support page
great app you have here, do you develop your own ui for this?