Use APKPure App
Get Security App: Vault App Lock old version APK for Android
Security Vault app lock will hide private photos video contacts secure notes
Security app with app vault: Hide personal photos, videos, contacts, notes, and much more
This app uses the Device Administrator permission.
Disclosure:
To prevent Safe folder being uninstalled, Safe folder need Device Administrator Permission and it never use any other Device Administrator permission except uninstall prevention.
IMPORTANT: Do not uninstall this app before unhiding your personal files otherwise it will be lost forever. Activate Uninstall Protection to prevent this app from being uninstalled by others especially kids.