My first IOS game CombiMath is released. (App Store Link)
(Accompanying web site - http://combimath.com/, visit it from cellphone to take full advantage of it.)
It's a "calculate 24" game. I made the same game for web 3 years ago using Google AppEngine (link). For IOS, I tried to make it using HTML5 wrapped in UIWebview so that I don't have to use Objective-C. But I wasn't satisfied with the end result of that effort. So I bite the bullet and start learning Obj-C. Turned out it wasn't so bad. Objective-C is quite easy. I also used Cocos2d, a popular 2D IOS game engine, which simplified a lot of things.
I'm glad it's out of the door. I need to add game center with leader-board and battle mode in the next release.