AppzLock is one of best lock app for your device, it will encrypt your all apps like Whatsapp Facebook, Photos, Viber, Games, E-mail, SMS.
Frequently asked questions:
How to enable password to App?
Open Application goto setting select lock type create password.
How to change password?
Open AppzLock, Edit Password Change password.
I forgot my password How I can reset it?
Open Appzlock select forgot password answer question after you can change the password.
Timings for password?
Your can enable relock policy and select relock timeout to 1 minutes to 1 hour.
How to select Pin password or Pattern?
Go to setting select lock type select password or pattern.