Calculator

Have you used a calculator before, but did you 'bounce' the calculator?
Welcome to the piano calculator, where you will use the plus, subtract, multiply, divide, and all other buttons to play the wonderful piano it!
This is a perfect combination with the piano calculator.

Features:
- Fast operation process
- Diablo calculator ui interface
- wonderful piano sound effects
- Excellent user experience

Piano with the calculator, so that the operation becomes more happy.

Recent changes:
- Fix Bugs
- Upgrade SDK