A great free aplication which yo 
Most downloaded app lock in Play Store. Protect privacy with password, pattern, fingerprint lock. Applock Aurora allows you to set numeric password or pattern lock to lock individual apps preventing snooper or intruders from accessing or enabling information you want keep private. Play Store Link: https://play.google.com/store/apps/details?id=com.freejoyapps.applock.Au... https://67.media.tumblr.com/b588c05d90b7cc656f8c6dabc13fc3b4/tumblr_o7rz... With Applock Aurora： Never worry about a friend borrows your phone to play games with mobile data again! Never worry about a workmate gets your phone to look the gallery again! Never worry about someone reads private data in your apps again! Never worry about kids mess up Settings, send wrong messages, paying games again! https://65.media.tumblr.com/775f34648443eb3331792291829a742e/tumblr_o7rz... Apps you want lock include: -System settings -Call log -Text messages (SMS) -Social media accounts like Facebook, Instagram, Twitter, Tumblr, Snapchat etc. -Contacts Features of applock password & pattern: -Private image: hide and encrypt your private photos. Lock them with password lock or pattern lock -Private video: Hide and encrypt your private videos. Lock them with password as PIN code or pattern -Lock cover: Disguise your lock screen as something else like calculator, weather, Clock. Force Close & Finger Print screen cover to confuse snoopers or intruders. -Prevent uninstall: After you enable Advanced Security feature, others are unable to delete this applock password & pattern without your permission. This can better protect your privacy and secret. No matter what kind of theme you like, we have tons of stunning and incredible themes and wallpaper like pet & animal, nature, love, vehicle, festival & holiday and so on. Also you can DIY your own theme: -DIY theme function allow you to be designer yourself and turn your creative ideas into unique themes right on your phone -DIY applock theme with your own photo or our beautiful wallpaper and delicate icons
