Calculator Lock

Calculator Lock – The Ultimate Private Vault & Secure Gallery.
Protect your privacy with Calculator Lock, the most sophisticated secret vault app designed to look like a fully functional standard calculator. Your files are not just "hidden"—they are AES-256 bit hardware-encrypted, ensuring your sensitive photos, videos, and documents remain accessible only to you.

Key Features:
* Military-Grade Encryption: All imported files are secured using AES-256-GCM encryption, with keys stored safely in the Android Keystore system.
* Private Photo & Video Vault: Hide unlimited images and high-definition videos. View them directly within the app using our high-speed secure player.
* Document Protection: Secure your PDFs, notes, and confidential documents behind a PIN.
* Fully Functional Calculator: To the outside world, it’s just a standard calculator. Nobody will suspect your secret vault exists.
* Security Question Recovery: Never lose access to your data. Set a custom security question to reset your PIN if forgotten.
* Screenshot Protection: Prevent other apps (or accidental captures) from seeing your vault content with built-in FLAG_SECURE protection.
* Multi-Theme Support: Choose between Light, Dark, or System Default modes to match your preference.
* Multilingual: Available in English, Nepali, Hindi, German, Spanish, and French.

Why choose Calculator Lock?
Unlike other "hide" apps that just move files to a different folder, Calculator Lock transforms your data into unreadable code. Even if someone accesses your phone's memory, they cannot view your files without your master PIN.