Best photo vault app for Android (2026)
"Best" depends on your threat. A vault that's perfect for hiding birthday-surprise photos is not the one you'd pick to protect something that must never be opened by anyone else. Here are the criteria that actually matter, and how the main options stack up.
The 6 criteria that matter
- Real encryption. Files stored as AES-256 ciphertext, not just moved to a hidden folder.
- Separate key. A pattern/password independent of your phone's screen lock.
- Offline / no account. Fewer places your data can leak means fewer ways to lose it.
- Decoy / duress option. A safe answer when you're forced to open the app.
- No ads, minimal permissions. Free ad-funded vaults often need network access - a red flag.
- Intruder detection. A log of failed attempts tells you if someone went looking.
The main options
Samsung Secure Folder
Excellent if you have a Samsung phone - hardware-backed, genuinely encrypted. Downsides: Samsung-only, and no decoy.
Google Photos Locked Folder
Built in and effortless, but tied to your screen lock, not described as end-to-end encrypted, and no decoy. Good for casual privacy. See is it encrypted?
Keepsafe
Popular and polished, but account- and cloud-oriented - your vault can exist off-device. Good if you want sync; less so if you want nothing leaving the phone. See Umbra vs Keepsafe.
Calculator / disguise vaults
The disguise is widely known and often pairs with weak encryption and ads. Why the disguise fails →
Umbra
Built for the strict end of the spectrum: AES-256-GCM, pattern-derived key, decoy vault, intruder log, and no internet permission at all. Best fit if your rule is "nothing leaves my device, and I need an answer for being asked to open it."
| Criteria | Secure Folder | Locked Folder | Keepsafe | Umbra |
|---|---|---|---|---|
| AES-256 encryption | Yes | Not E2E | Yes | Yes |
| Separate key | Yes | No | Yes | Yes |
| Offline / no account | Yes | Google acct | Account | Yes |
| Decoy vault | No | No | Limited | Yes |
| Works on any Android | Samsung | Yes | Yes | Yes |
If your rule is "nothing leaves my phone"
Umbra is offline, encrypted, no-account, with a decoy vault and intruder log. Free on Google Play.
Bottom line
For casual tidying, the built-in options are fine. For a vault that assumes someone might actually try to get in - remotely or in person - pick one with real encryption, a separate key, and a decoy. That's the bar Umbra was built to clear.