Calculator Lock - Photo Vault vs PhotoGuard

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.

PhotoGuard is an Android photo vault for hiding private photos and videos. The vault can be secured with a PIN, pattern, password, or fingerprint, and individual albums can have their own passwords. The maker says hidden files are encrypted on the device rather than uploaded to a server. A secret camera saves photos directly into the vault with encryption applied as they are taken. For privacy, Fake Vault opens a decoy space with a separate PIN, and Quick Exit closes the vault when the home button is pressed. Break-In Alerts record the time of a failed unlock and take a photo. Trash Recovery temporarily holds deleted files for restoration, and the maker says the vault can be restored automatically after accidental uninstallation. Private Cloud provides automatic backup and sync with unlimited space across devices running PhotoGuard; the privacy policy identifies cloud storage as a premium feature. The free download is free and includes ads and in-app purchases.