Smart AppLock is described as 'Great privacy protection tool for Android. Lock your SMS, Mail, Photo, Contacts' and is an app in the Security & Privacy category. There are more than 10 alternatives to Smart AppLock for Android, Android Tablet and Blackberry. The best alternative is Security Master, which is free. Other great apps like Smart AppLock are AppLock (Freemium), Photon App Lock (Free), Hide Secrets (Free) and Smart App Locker (Free).
Photon App Lock allows you to create individual passcodes for individual people. By creating multiple passcodes, mobile device owners can customize access to every person who have their hands on the device.
Do you have secrets? Then Hide It. Hide Secrets is one of the best Android App for hiding your secrets when your phone is not in your hand. Hide Pictures, Text Messages / SMS, Videos, Applications/ apps, Any Files, Contacts, Call Logs, Albums and Notes in your Android phone.
With "App Lock Free" you can decide for each installed app like Waze or Google Maps, that it should not be password protected, or the password protection-unlock should only be active until you wish a normal password-lock again by pressing the button "Lock...
Lock your Favorite apps like Whatsapp, Facebook, Wechat & Other Chat Messenger. Hide SMS, Call-logs, Photos & Videos to keep them safe and protected. It will take a snapshot of person who tries to unlock your personal apps & files behind you.