Quickly lock your device without using the Power Button.

•Unlock with Fingerprint Reader
•Quick Settings Tile
•Replace Assist
•No bloat just one App
•No Battery drain
•15-Day Free Trial!

How to set as Assist App:
'Settings' -> 'App & notifications' -> Expand list -> 'Default apps' -> 'Assist app' -> Select 'Screen Off'

This app uses the new Accessibility Service found in Android 9 but for older version of Android this app uses the Device Administrator permission.

How to remove on Android 8 or lower:
'Settings' -> 'Security' -> 'Device Administrators' -> Deselect 'Screen Off' -> Uninstall