"Duplicates a native service" would be my guess". "We'll refuse what the fuck we want" is an other possibility.
Or they find some landmarks that are shaped like sexual organs and reject it because of pornographic content.
Just once I'd like to see them issue such a press release.
I don't believe they've used that in a while. They let Chrome & Sparrow on without any complaints.
but they are both severly crippled on iOS, chrome is just a safari skin, and sparrow cannot be used as a default app for mail on iOS cannot use notification for new mail unless using 3rd party services (if you are trusting them with you email credentials).
Doesn't that come down to API limitations rather than actual functionality?