For developers, allowing the public to evaluate apps before general release is paramount -- it helps weed out the bugs that could derail an otherwise successful launch. Both Apple and Google offer the capability, but TestFlight features have only been baked into iOS for the better part of a year and Android owners have typically had to jump through a number of hoops in order to sign up. With that in mind, Google has made some welcome changes that take the hassle out of the process.

http://www.engadget.com/2015/07/31/g...ing-beta-apps/