I don't have an ios device (and hope I'll never have to :p) but I hear people saying that apps never crash on it.
Is this true? And if so, how is this achieved:
Forcing devs to pay extra attention to this or some system mechanics/structure or...?

Although i think i already saw things crashing somewhere...

They do crash. (Especially if I made the app)

There is usually some very extensive testing of the app before it goes in the store. The people at Apple really really try to crash your app.

Unless you are a very large well known company, of course, and then they don’t really care. I always wondered how the fuck ATT got there shitty ass app in the store.

They do crash. But there isn't a report crash pop up after the crash. The app is restarted without notice.

Well as someone with experience with ios dev...the apps are seriously scrutinized before going into the store so they try to make your stuff work as cleanely as possible. Xcode does crash constantly and it is a big piece of caca :) so is the API for cocoa touch :) the same thing goes for Android tho, actually they both suck.