Calculator (SECRET NOTEPAD)

This is a secret notepad app that can be used to save all of your personal or confidential stuff...
This app lets you decide whether you want to save your notes locally on mobile device or on cloud.
To keep your notes safe from others, NOTEPAD is embedded inside a CALCULATOR,not only this calculator provide security but also it has advance features like HISTORY which makes it more efficient.
To access NOTEPAD DASHBOARD, just enter passcode and hit equal-to " = " button
You can change your passcode anytime you want