Calculator Lock - Photo Vault vs Hide it Pro

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.

Hide it Pro is an app for keeping private photos, videos, music, apps and notes out of view. Hidden data is encrypted and stored on the device, and the privacy policy says the maker cannot access media added to the app. Users can access the vault with a fingerprint, and app locking supports a fingerprint or password. The app also includes a private browser with ad blocking and tracking protection, plus chat for private conversations and photo exchange. Optional plugins add more functions: one can remove the app icon, while VBrowser offers incognito browsing, a download manager, video downloads from over 14 streaming sites and picture saving. An SMS hider plugin is described as early development and is not guaranteed to work. Hide it Pro is available for Android, iOS, macOS and Windows. Its free plan is listed at free, with no paid plans listed on the official site. The privacy policy says third-party ad SDKs may collect IP address, device and operating-system details, session data and diagnostics.