Basic calculator with 9 digits (+2 more for the x10 exponent).
Looks and acts much like a real hand held calculator.

• Add things.
• Subtract things.
• Multiply and Divide things.
• Square Root Reciprocal and Percent Buttons.
• Memory Buttons.
• Enter numbers as large as 9.99999999E+99 or as small as 1.00000000E-99.
• Settings to turn vibrate & sound off and on.
• Short user guide in app found by pressing the i button at the top right.