A free app for Android, by Salon Games For Princess.

You can lock apps to prevent unauthorized access and protect privacy. 

AppLocker & Gallery (Photo, Video, Audio) Hide is an app lock system that protects apps with a password or pattern and fingerprint. 

It can lock apps such as your social media, contacts, settings, messaging apps, and even your gallery, preventing any unauthorized access and protecting your privacy. This app lock can hide photos, videos, audio, and other files.

To hide photos, videos, audio, and other files, you need to select a photo, video, audio, or another file that you want to hide and then select a folder or album to store it in.

To restore a photo, video, audio, or another file, you need to select the folder or album that contains it and then hit the restore button.