I've always used Crashlytics for their super efficient and beautifully designed crash report tools. They do an amazing job focusing on the simplicity of the SDK and the design of the dashboard.
I'm glad they apply the same design principles to Mobile Analytics and think they can be a very strong competitor for other tools. Until now I'd rather look at the crashs on Crashlytics dashboard than at the analytics on Flurry dashboard :)
I've just setup it for my app and can't wait to see the first data.
Lydia