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By M Holmberg

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A student's circle calculator for the iPhone/iPod Touch and the iPad.

Calculate the circumference, diameter, radius and the area of a circle by entering any one of these inputs. This app will help beginning algebra students see the relationship of Circumference/Diameter=π

. Only one input is required to calculate the circumference, diameter, radius and area of a circle
. Field clear button
. Automatic calculation for field entry or if preferred, a manual calculate button
. Alternative value for π. Some teachers prefer a simpler value for π, such as 3.14, for classroom use. The 'value for π' setting allows for this scenario. The value for π is utilized by the app only when set to ON.
. Calculation color setting. The colors: red, green, blue or black may be set for the calculated fields to help distinguish between the user entered field and calculated fields. The user entered field is black.
. Reset settings button. The settings panel has a reset button to restore the app to the installed defaults. These defaults are: Auto Calculation = ON, Value for pi = 3.14, set to OFF, Calculation color = RED.
. More button (…) for the mathematical relationships of the circumference, diameter and radius of circles.

What's New in Version 1.1

.Changed number formatting
.Improved user interface


iPhone Screenshot 1
iPhone Screenshot 2
iPhone Screenshot 3
iPad Screenshot 1
iPad Screenshot 2
iPad Screenshot 3
View in iTunes
This app is designed for both iPhone and iPad
  • Free
  • Category: Education
  • Updated:
  • Version: 1.1
  • Size: 0.3 MB
  • Language: English
  • Developer:

Compatibility: Requires iOS 4.2 or later. Compatible with iPhone, iPad, and iPod touch.

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