How to choose a photo vault app you can trust
Many vault apps look alike in the App Store. These seven checks help you see the real differences.
The short answer
Choose a photo vault app that explains its encryption in detail, works without an account you don't want, encrypts backups before upload, gives you a recovery option that only you control, has no ads in the vault, and is honest about what it cannot protect against.
1. Does it say how it encrypts?
Look for named algorithms, such as AES-256-GCM, and how the key is made from your PIN, password or pattern. Vague words like "military-grade" do not tell you much.
2. Is the lock tied to the key?
In good designs, your PIN, password or pattern creates the encryption key. In weaker designs, the lock is only a screen in front of unencrypted files.
3. Does it need an account?
An account can be useful for the developer's cloud, but it links your vault to an identity. Decide whether you want that.
4. Are backups encrypted before upload?
If the app backs up, check that files are encrypted on your device first, so the storage provider cannot read them.
5. What happens if you forget the lock?
A recovery phrase you keep yourself is safer than a reset email. But it also means nobody can help you if you lose both.
6. Ads and tracking
Check the App Privacy section on the App Store listing. Ads and tracking inside a privacy app are a warning sign.
7. Is it honest about limits?
No app protects you if someone sees your code or your phone has malware. Trust apps that say so.
We wrote Hidegrid's security page with these checks in mind. You can read it and judge for yourself.