Photo Vault - Calculator Lock

AppSweat Mobile

In-app purchases

About this app

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

What’s new

Refreshed glass-style interface and an improved Recycle Bin: restore deleted files or remove them permanently. Plus performance and stability improvements.