SurveyMonkey Intelligence - Usage and download metrics for all mobile apps
Switchr - Easily switch between App Store countries.
Apple App Analytics - Apple's very own iTunes Connect App Analytics
The App Guy Podcast - Access over 200 startup founder interviews
CleverTap - CleverTap offers blazing fast analytics, powerful real-time segmentation, multi-channel messaging, A/B testing and personalization in one unified solution.
App Store Launch Stories - A podcast about the stories behind app launches