Testimonial.to - Collect video testimonials in the simplest way
Apple App Analytics - Apple's very own iTunes Connect App Analytics
Trust - Trust lets you easily create online surveys, collect customer video testimonials and reviews, then display them with beautiful widgets on your business websites.
My Motiff - Allowing you to stay connected in realtime
Senja.io - Senja is the easiest way to collect, manage and share testimonials, online reviews and feedback from your customers.
Usage Analytics in appFigures - Track usage for your app along side downloads, ranks & more