Secure Private Calculator is a free iPhone app developed by 东 郑 in the Multimedia category. This app allows you to hide your photos, videos, and contacts behind a calculator, making them discreet and secure. When opened, the app appears as an ordinary calculator, but once you enter your password, you can access your private world.

The app offers several features to ensure the privacy of your files. It automatically moves to the calculator when running in the background, providing an added layer of security. To confirm your password, simply press the percentage symbol (%).

With the File Manager feature, you can import photos and videos from your albums and camera roll. Additionally, the app allows you to easily share pictures and videos by calling Email, WeChat, Evernote, Dropbox, and other third-party apps for file processing. You can also create custom albums to organize your files effectively.

Secure Private Calculator also includes a Private Contact feature, where you can add unlimited contacts and attach notes to them. The app supports speed dialing, sending text messages, and sending emails directly from within the app.

Please note that for any problems or suggestions, you can contact the developer at They would love to hear your feedback and assist you with any queries.