This weekend I did some fairly extensive research on different quality tracking/crash reporting services available for mobile applications. Since I'm a iOS developer, I mainly focussed on this platform. Yet, for Android developers this post can be handy too although I believe crash reports handling is much better on the Android platform compared to Apple (iTunes Connect).
I tested the following services:
iTunes Connect (https://itunesconnect.apple.com)
Crashlytics (http://try.crashlytics.com) (not tested it as I'm still on their invitation list)