https://play.google.com/store/apps/details?id=com.bhanu.simpleapplocker&hl=en
Simple App Locker - Apps on Google Play
Simple app to protect your apps by pin code or fingerprint lock.
simple applocker appson googleplay
https://play.google.com/store/apps/details?id=com.handyapps.photoLocker
Hide Photos in Photo Locker - Apps on Google Play
in photolocker appson googlehidephotos
https://play.google.com/store/apps/details?id=com.totalfreeapps.secure.incoming.call.locker.pincode&hl=en&gl=US
Incoming Call Pin Locker - Apps on Google Play
Protect your call privacy by being the only one to unlock and receive them.
locker appson googleincomingcallpin