Calculator Free

Are you in trouble with your studies?
Yesterday you played all the day but today you'll have a test? or a simulation exam?
Don't worry mate, this app will save you!
It is a simple calculator that hide a secret area where you'll hide your "little note"

This app do:

-Not exit from the app.
This is a real amazing feature, not a bug.
When you'll under pressure while making a test
and you'll press few times back button, you'll understand.

-Simple operation
-Save note to see in the right moment ;)

Have fun!