AppLocker, an Android Native Application will help you to lock your application which you don’t want to access without your permission. This application has feature of Pattern Lock and Password Lock. You can lock each application separately. Now you can restrict your applications to access without your permission. It will help you to prevent from Data loss from beginner users or childern.
Demo https://codecanyon.net/item/droid-app-locker/11002269
Downloadhttps://www.filecad.com/mm23/Droid-App-Locker.rar