NullVault vs Photok
NullVault
nullvault.appPhotok
photok.appSide by side
| Figure | NullVault | Photok |
|---|---|---|
| Price from | $1.67/mo | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| iOS | Yes | — |
| Android | Yes | Yes |
| Plans published | 8 | 2 |
| Spec score · Photo Vault Apps | 8.9 (#3) | 7.5 (#17) |
| Encryption | The apps use AES-256-GCM authenticated encryption for vault content and metadata. | The maker says files are encrypted locally with AES-256 and decrypted only in memory while the app is in use. |
| Headquarters | Prague, Czechia | Hamburg, Germany |
| Product | NullVault stores private photos, videos, files, and notes in separate encrypted vaults, each opened with its own pattern. | Photok is an Android photo and video vault for hiding private media. |
| Support | Support is provided by email at [email protected] and staff state they cannot bypass encryption or recover forgotten phrases. | The Google Play listing provides [email protected] as the support email. |
Plans
NullVault
- NullVault FreeFree
- NullVault Free for iOSFree
- Vaultie Pro Monthly$2.99 a month
- Vaultie Pro Annual$19.99 a year
- Vaultie Pro Lifetime$39.99, paid once
- NullVault Pro for iOSPrice not published
- NullVault Pro for iOSPrice not published
- NullVault Pro for iOSPrice not published
In their own words
NullVault
NullVault stores photos, videos, files, and notes in separate encrypted vaults, each opened with its own pattern. Entering a pattern opens the matching vault without showing a master list or the number of vaults. Within a vault, users can organize content into collections, search, and sort; they can capture or import items and deliberately export selected ones. Exported copies are outside NullVault’s protection.
Local vaults work offline without a NullVault account or server. The maker describes Android encryption using AES-256-GCM, Argon2id, and Android Keystore material; its iOS description lists AES-256-GCM, Argon2id, Apple CryptoKit, and libsodium. iOS supports encrypted iCloud backup and controlled read-only sharing through CloudKit, while Android supports portable encrypted backups. The free iOS plan allows up to five vaults and 20 items total, with one collection per vault. Compatibility is listed for iPhone running iOS 26 or later and Android phones running Android 10 or later. The maker warns that a compromised device may expose patterns, keys, screens, or plaintext, and that hidden vaults do not make encrypted data impossible to detect.
Photok
Photok is an Android vault for keeping private photos and videos away from ordinary view. Imported media can be organized into albums and exported, while files are encrypted locally with AES-256 and decrypted only in memory during use. Cloud upload is not required. Users can unlock with a fingerprint, share directly into the vault, hide the app icon, and delete originals after import. Encrypted backups can be created and restored. Photok is open source under the Apache 2.0 License and is developed by Leon Latsch and public volunteers. Downloads are listed for Google Play, F-Droid, and other alternatives. The maker describes the core app as identical across Google Play and FOSS variants, but telemetry defaults differ: enabled by default in Google Play and disabled by default in FOSS. The FOSS plan costs nothing; Photok Pro is an optional Google Play add-on with no listed price.