KingUser is the best app to manage you root access authorization. Compare with other root access app ,KingUser save electricity as much as 90%. This app like SuperSU. if want kinguser to working you must had root your android device.
what kinguser can do
1. Manage root access on your device at ease with new Material design
2. Uninstall in-built apps which takes up memory on your phone
3. Choose which apps runs on startup
4. Smart Authorization
5.Authorize the speed increased by 215%
6.Excellent UI style design