Many users asking for app lock in samsung device, as in samsung there is inbuilt app lock feature but was disabled. Just giving suggestion to use inbuilt app lock feature. Like if found useful.
Steps:
1) Search activity launcher in play store as icon shown in pic as app is official
2. Open activity launcher and allow to scan all apps and let complete to 100%
3. Search app lock and click on it, after that choose 1st one as shown in image
4. Last step use password or fingerprint and choose app to lock or manage as u want.
Enjoy.
