[duskwuff]

The sense I get is more or less that they're providing push/storage capabilities similar to what Apple provides via iCloud. The critical differences are that:

- It's cross-platform. You can use it for Android / Windows / Linux / web apps, not just iOS and OS X apps.

- It doesn't have some of the restrictions that iCloud does (e.g, App Store distribution for Mac OS X apps).

They also add some extra functionality on top of built-in OS functionality -- for instance, they've got some utilities for simplifying in-app purchases on iOS / OS X.