Great app by a great dev. Use this in combination with greenify donation package and my phone last for 3 days on a charge easily. I have a one plus 3t running rooted stock mm OS and after using better battery stats to track down some pesky wakelocks I average no less than 9hr SOT on a full charge. If I don't use my phone for much of anything other than texts phone calls and some light social media and web browsing I can easily get 3days out of a full charge. Highly recommend this for anyone looking to get some serious use time out of their device.
April 03 2017