Vault - Private media locker

Vault is a private gallery and file safe disguised as a real, working calculator. Open the app and it is a calculator. Type your PIN, press equals, and your private vault opens.

Everything you put inside stays encrypted on your phone.

CALCULATOR DISGUISE
• Looks and works like a real calculator, does actual math
• PIN entered straight on the calculator keypad
• Decoy PIN opens a second, empty vault
• Blends into your app drawer

HIDE EVERYTHING THAT MATTERS
• Hide photos and pictures
• Hide videos with smooth in-app playback
• Record private voice notes with live waveform
• Write encrypted text notes with auto-save
• Store private PDFs and read them in-app
• Organize everything into private albums and folders
• Drag to reorder albums your way
• Filter your gallery by photos, videos, notes, voice notes or PDFs
• Multi-select to move, export or delete in bulk

STRONG ENCRYPTION
• AES-256-GCM encryption
• Hardware-backed keys via Android Keystore, StrongBox when available
• PIN protected by PBKDF2 hashing with timing-safe verification
• Thumbnails encrypted at rest
• Encrypted local backup to a folder you choose

SMART PRIVACY
• Biometric unlock with fingerprint or face
• Auto-lock the moment you leave the app
• Face-down auto-lock, flip your phone to lock instantly
• Lockout protection with exponential back-off
• Self-destruct timer for any item: 1 hour, 1 day, 1 week, 1 month or a custom date
• Built-in photo annotation that saves a marked-up copy
• Selective export back to your gallery whenever you want

ENIGMA, SHARE A SECRET
Turn any note into an encrypted token with a password. Paste the token into any chat, email or SMS. Only someone with Vault and the password can read it. Use a different password for every secret.

WORKS OFFLINE
• Runs in airplane mode
• No account, no sign-up, no email required
• Files stay on your device
• Encrypted local backup that you control

BEAUTIFUL TO USE
• Smooth photo viewer with focal-point pinch zoom
• In-app PDF reader
• In-app video and voice note player
• Slideshow mode
• Material You design, light and dark themes