After 2 month of hard work I managed to publish what I believe is the first app made with Construct 2 to reach the App Store!
The "Game" is an educational application for autistic or otherwise impaired teenagers and adults and teaches how to recognize the emotion that a person is feeling. By the way, it's entertaining even for an normally developed individual as it's not so easy to infer emotions from just a picture, plus there is an hard mode with peculiar words that also tests your vocabulary.
I think that this app shows the versatility of construct 2 since it's not strictly a game. It generates each "play" choosing random non repeated synonyms from an internal emotion dictionary and then lazy loads the correct emotion from a pool of thousands of images. It also supports multiple languages (currently en and it, soon de, fr, es)
It's compiled with PhoneGap (1.4.1) using the low latency audio plugin (see my tutorial) and employs the native alerts (using a custom plugin that I'll soon publish).
Links:
Feel Trainer 
APP Store (Whoever wants to try it just pm me and I'll send you a promo a code so you'll get the game for free).
Feel Trainer 
google Play (Android) (For Android there are no promo codes AFAIK).
Tech Stuff:
If you are serious about developing mobile apps the bad news is that you'll have to compile PhoneGap yourself, the online service is too limited and certain features (like the alerts or the native audio) must be tested before release.
Even if I had (and still do have) reservations about c2 (and in general HTML5) I can honestly say that there is nothing you can't do with it, granted that for some of them you'll have to get your hand dirty with plugins, but basically every single part of the engine is editable so there is no limit.
Before stopping here I tried almost every HTML5 game framework and c2 is the best even if it's in the form of a game maker (with all the attached issues) but 
Ashley knows what he's doing and he keeps up with the latest specifications and technologies.
I hope this first milestone will encourage more developers to approach c2 and in turn scirra to offer more developer friendly options.