+Calculator for iPhone

+Calculator for iPhone is a Calculator and a math Game. Designed with large buttons, + Calculator use a scroll view to access the mathematical functions. The math Game mode (button ?) is great to improve your memory and to teach math to your kids. You can submit your scores to the Game Center and compare them worldwide.
+Calculator is free (no Ads) for a limited time and it comes with ten new mathematical functions, three types of buttons and three different button sounds.
If you need more functions, please upgrade to the premium version with more than 35 mathematical functions and 8 cool button sounds (tap, money, bird, fart, kiss and cat). To update press the button within the app:

Free Version:

Paid Version (in app purchase):

What’s new in version 1.2.0:

-Two sets of buttons: kids and classic
-Improved game modes: hard and genius
-Game Center Enabled - compare your best scores with the world. 3 levels and 16 achievements available.
-Game mode: new final score display