Calculator Lock - Photo Vault vs NullVault
Calculator Lock - Photo Vault
sababasystems.com
NullVault
nullvault.appSide by side
| Figure | Calculator Lock - Photo Vault | NullVault |
|---|---|---|
| Price from | Free | $1.67/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| iOS | — | Yes |
| Android | Yes | Yes |
| Plans published | 2 | 8 |
| Spec score · Photo Vault Apps | 8.6 (#5) | 8.9 (#3) |
| Encryption | The product page identifies the vault as AES-256 encrypted and the policy describes encryption for vault files, thumbnails, notes and database records. | The apps use AES-256-GCM authenticated encryption for vault content and metadata. |
| Headquarters | India | Prague, Czechia |
| Product | Calculator Lock is an Android privacy vault hidden behind a working calculator and accessed with a 4-digit PIN. | NullVault stores private photos, videos, files, and notes in separate encrypted vaults, each opened with its own pattern. |
| Support | Support is available by email, and optional feedback can be sent over HTTPS without automatically attaching vault files or PINs. | Support is provided by email at [email protected] and staff state they cannot bypass encryption or recover forgotten phrases. |
| What it does | Calculator Lock is an Android privacy vault disguised as a working calculator for photos, videos, audio, PDFs, files and encrypted notes. | NullVault is a mobile encrypted vault for photos, videos, documents, files and notes, with each pattern opening a separate vault. |
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
Calculator Lock - Photo Vault
Calculator Lock - Photo Vault is an Android privacy vault concealed behind a working calculator and opened with a 4-digit PIN. It stores photos, videos, audio, PDFs, files, and Secure Notes in encrypted app-private storage. Different PINs can open separate vaults without a visible session switcher. Users can search and pin encrypted notes, organize items in built-in folders, and restore deleted media or notes from Trash. The app displays photos, videos, audio, and PDF previews; unsupported files can be unlocked, exported, or shared. The maker describes screenshot protection and clipboard cleanup on sensitive flows. The free plan costs nothing and allows up to two personal vaults, with ads possibly appearing. There is no cloud backup or PIN recovery. Optional Intruder Detection may capture a front-camera photo after repeated failed attempts.
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.