Monkop(http://www.monkop.com) helps devs and testers to take a look at how their apps work/behave in real devices, using different OS versions / screen sizes and densities.

Uploading apk enables monkop to install on several devices, discover forms and get a detailed report with videos, screenshots and unique performance information.

https://www.youtube.com/embed/OoZJYbfWJeg