Indeed... we just finished our app building on Parse, but this and last week make me think hard about whether or not it was a good decision to be dependent on their infrastructure.
I used it to speed up the iOS dev on http://www.backspac.es as I had no experience with iOS but lots of backend experience.
Honestly, they have a lot of downtime, and now that I am very handy with iOS/obj-c I plan to migrate off.