Calculator Vault - Photo Vault

A real calculator on the outside, your private photo & video vault inside. Unlock with a secret PIN or Face ID. No account — nothing leaves your device.

Keep your private photos, videos, and files truly private. Calculus Lock looks and works like an ordinary calculator — but enter your secret PIN and it unlocks a hidden, secure vault that only you can open.

A SECRET HIDDEN IN PLAIN SIGHT The app on your home screen is a fully functional calculator. Anyone who opens it just sees a calculator. Type your private passcode and the real Calculus Lock appears — your personal vault for everything you'd rather keep to yourself.

WHY PEOPLE TRUST CALCULUS LOCK • Calculator disguise — no obvious "locked app" icon to invite curiosity • PIN + biometric unlock — secure with Face ID, Touch ID, or fingerprint • Private photo & video vault — import from your gallery or capture directly inside the app • Hide any file — documents, screenshots, and more, all in one secure place • Intruder alerts — silently capture a photo after failed unlock attempts • Decoy PIN — open a separate, harmless vault under pressure • Screenshot protection — stop your private content from being captured • Recycle bin — recover items you delete by mistake • PIN recovery — get back in with security questions or a recovery code

100% PRIVATE BY DESIGN Your data never leaves your device. There are no accounts, no cloud uploads, and no servers that can see your content. Your PIN is stored only as a secure one-way hash — not even we can access your vault. What's yours stays yours.

CALCULUS LOCK PRO Upgrade to unlock the full experience: • Unlimited storage for photos, videos, and files • Intruder log with capture photos • Decoy vault mode • Screenshot protection • Ad-free experience

PERFECT FOR • Keeping personal photos and videos away from prying eyes • Storing sensitive documents and IDs securely • Protecting your privacy when you hand your phone to others • Anyone who values discretion and peace of mind

SIMPLE, FAST, SECURE No sign-up. No subscriptions you didn't ask for. No data harvesting. Just open the calculator, enter your code, and your private world is one tap away.

Available in 60+ languages, including English, Spanish, Portuguese, French, German, Japanese, Korean, Chinese, Arabic, Turkish, Russian, Hindi, and many more.

Questions, feedback, or need help? Email us — every message is read by a real person.

Download Calculus Lock and take back control of your privacy today.

— Privacy Policy: https://armagangok.github.io/calculus-lock-legal/privacy.html Terms of Use: https://armagangok.github.io/calculus-lock-legal/terms.html Support: https://armagangok.github.io/calculus-lock-legal/support.html