Apple App Analytics - Apple's very own iTunes Connect App Analytics
CleverTap - CleverTap offers blazing fast analytics, powerful real-time segmentation, multi-channel messaging, A/B testing and personalization in one unified solution.
Poltio - Create and share questions, get answers.
OI App Center - App reviews done right
My Motiff - Allowing you to stay connected in realtime
UserX - Mobile app analytics system