A free app for Android, by Calculator Lock – Photo Vault Video Vault.

The Gallery Lock app is a safe place to hide your photos and videos from the world. It provides you with a simple way to lock your photos and videos in a private place where only you can see them.

The app is free, safe, and easy to use. Just import your photos and videos into the app, set a password, and you’re ready to go. You can also hide multiple albums at once, import from cloud storage services like iCloud and Dropbox, and use various photo and video sizes.

It supports all major Android devices and iPhone models, including Android phones and tablets, Android-based mobile devices, and even some iPhone models.