Great way to test your apps I've used seattle clouds for over 2 years. I enjoy using their system. Very easy to use.
Mina My games
Great you have too practice this.
Seattle cloud Look-good
* New modern UI with Material Design elements and improved navigation
* New modern icons in all pages
* Improved UI in all pages for light themes
* Preview your app style changes right away (no build required)
* Unlimited scrollable tabs
* Improved app state restore on reactivation from background
* Updated libraries: AdMob, Pollfish, RevMob, PDFTron (PDF View now works on all Android versions)
* Improved performance and stability
* Smaller size
More details: http://seattleclouds.com/sc-android