This guide offers a decision framework. GuardVault is available on the App Store.
What are you trying to protect?
Keeping photos out of the main library, controlling backups and protecting stored files are different goals. Start with your needs and who might have access to your device.
What protection do you already have?
Apple documents a Hidden album, locked by default on supported versions, and an option to hide the album itself. Check instructions for your iOS version and review your iCloud Photos settings.
Can you recover your files?
Before importing important documents into a new app, try a backup and restoration with test files. Record the recovery steps and keep your recovery secret separately from your phone.
Apple Support — Hidden album · 2026-10-19