Secret Calculator is a simple calculator, which includes a hidden gallery, contacts and notes.
These functions are covered by calculator, and not visible at first. You should type a password to open these hidden functionality. You will write password directly in the calculator, so no one else will guess that there are other functions except for calculator.
This application stores all files only in the device. And no way to recover the data if you delete the app without backup. But you can backup app data into your Dropbox account, and restore it, or even you can restore the data from an another device.

Features
• Calculator
• Private Photo and Video Gallery
• Contacts list
• Notes
• Application is not visible in the recent list after pressing the home button
• Ability to save private files into the phones Gallery
• Backup and restore functionality via Dropbox
• Password recovery

NOTES:
• Press '%' button to create a new password or enter into the app with existing password
• Long press 'C' button to recover a password, but at first you need to write a recovery email in the application settings