Используйте приложение APKPure
Историческую версию App Protector - App Locker можно получить на Android
Вы можете защитить любое приложение в телефоне с этим приложением
You can protect any application in your phone such as (Gallery, E-Mail,Contact ,Game...) with this app .it just take two click to enable service and choose app lock which you want to lock . If your friend , your kids or anybody want borrow your phone you just block app which you want to prevent the other person use it and you can comfortable because your phone was protected safely