Hidden Folder - Calculator

Hidden Folder is a private vault disguised as a real, fully working calculator. Anyone who opens it just sees an ordinary calculator — only you know the secret.

🔒 HOW IT WORKS
Type your secret password on the calculator like a normal calculation and press "=". Your hidden vault opens instantly. To anyone else, it's just a calculator.

📁 KEEP PRIVATE THINGS PRIVATE
• Photos — imported from your gallery and stored encrypted
• Videos — hidden in the app's private storage, invisible to other apps
• Notes — encrypted text notes

🛡️ REAL PRIVACY, ON YOUR DEVICE
• Photos and notes are encrypted with AES-256
• The encryption key is protected by the Android Keystore
• Files are invisible to your gallery, other apps, and a connected PC
• Screenshots are blocked and content is hidden in the app switcher — just like banking apps
• Everything stays on your device: no account, no cloud, no data collection

⚡ SMART & FAST
• Auto-locks when you leave the app or when you shake your phone
• Option to delete the original file from your gallery after importing
• Save any item back to your gallery whenever you want
• Pinch to zoom photos
• Light & dark theme, follows your system
• English & Turkish

🧮 A REAL CALCULATOR TOO
It isn't a fake shell — it's a fully functional calculator you can actually use every day.

Important: Your password is the only key to your vault. If you forget it or uninstall the app, your hidden content cannot be recovered. Please remember your password.