Calculator Lock - Photo Vault vs Secret Album: 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.

Secret Album: Photo Vault hides photos and videos in encrypted storage protected by a PIN or fingerprint. A decoy PIN can conceal the real contents, and individual albums can use unique PIN codes. The app offers break-in alerts and reports with intruders' photos. Deleted photos and videos can be recovered from the Trash folder. A private camera and cloud backup are also listed. The app is available for iOS and macOS, subject to device requirements: iOS 15.0 or later and iPadOS 15.0 or later, or a Mac with macOS 12.0 or later and an Apple M1 chip or later. The App Store listing gives it an 18+ age rating. A free plan and free trial are listed, along with in-app purchases. Premium purchase options include USD 19.99, USD 49.99, USD 6.99, and USD 1.99, among other options. BP Mobile says it does not sell personal data and encrypts personal data where possible before sending it to hosting providers. It also says it cannot guarantee absolute security.