To lock your applications with Applock, open the dfndr security app, tap on the Tools tab and select Applock.
1- Login with a Google account. This will be used to reset any forgotten patterns or PINs.
2– Create a pattern (or numerical password) to be your Applock’s access code.
3- Reenter your pattern (or numerical password) to confirm it.
4- On the next screen, toggle the switch to the right for all the apps that you want to lock using Applock.
Now Applock has been activated for your device!