SurveyMonkey Intelligence - Usage and download metrics for all mobile apps
InterestExplorer - Discover 1000's of hidden Facebook interests to target.
Apple App Analytics - Apple's very own iTunes Connect App Analytics
Facebook Ad Hunter - Facebook Ad Hunter uncovers hidden audiences to target when running Facebook Ads.
CleverTap - CleverTap offers blazing fast analytics, powerful real-time segmentation, multi-channel messaging, A/B testing and personalization in one unified solution.
AdEspresso - Optimize your Facebook Ads Easily, Like Morning Coffee