Calculator Hide File App is an open-source Android application that combines a functional calculator interface with a secure private file storage feature. It allows users to store and manage personal files such as images, videos, documents, and notes, protected by a passcode.

Key Features:

• Dual Functionality: A fully working calculator alongside a private file storage area accessible via passcode.
• Passcode Protection: Access your private files securely using a user-defined code.
• Secure File Manager: Add, remove, and organize files within a protected local environment.
• Local Storage: All files are stored on-device, ensuring user control and privacy.
• Lightweight & Fast: Designed to run smoothly across a wide range of Android devices.
• No Root Required: Works on standard Android devices without requiring root access.
• File Encryption: Protect stored data using encryption mechanisms.

How It Works:

1. Calculator Mode: Use the app as a standard calculator for everyday calculations.
2. Access Private Storage: Enter your passcode to open the secure file storage area.
3. Manage Files: Import, organize, and remove files within the app. Data remains protected locally on your device.

Requirements:

• Android 6.0 or higher
• Storage permissions enabled
• “Manage All Files” permission may be required on Android 11+ for full file access functionality

Technologies Used: Kotlin, XML, Android SDK, MediaStore API, and secure local storage techniques

Open Source: This project is fully open-source, allowing users to inspect the code and verify how data is handled.

Privacy Focus: The app operates entirely offline and does not collect or share user data.