Parse.ly Analytics - Analytics for understanding audience attention
Apple App Analytics - Apple's very own iTunes Connect App Analytics
GoSquared People Analytics - One place to understand your users
CleverTap - CleverTap offers blazing fast analytics, powerful real-time segmentation, multi-channel messaging, A/B testing and personalization in one unified solution.
Known Pro - The best way to reach your audience from a single platform
AppMetrica by Yandex - Free ad tracking & full-stack app analytics for mobile apps.