AppKiller: force stop apps

Mar 8, 2021

✓ Fixed the issue where the running apps would not found.
✓ New attractive user interface.
✓ Dark mode added.
✓ Added a new feature called 'App Manager'.
✓ Added a new feature called 'Try App Killer Pro'.
✓ Fixed an issue where the killing process got stuck.
✓ Android 11 compatible.
✓ Fixed some other bugs.
✓ Optimized performance.