iPhone Screenshots


Visualizing fractions and whole numbers is one of the best ways to understand them. Numerator Ninja makes quick work of fractional problems and displays the result in a helpful graphical format. Fractions are displayed in pie-chart format and whole numbers are represented by color coded disks and numbers (powers of 10). Values are easily entered using either up/down keys or keypad.

Numerator Ninja slices through the following with ease:

-Fraction visualization
-Whole number visualization
-Fraction reduction
-Conversion of improper fractions
-Operations on Mixed Numbers
-Decimal Entry and Conversion
-History of entered values

While Numerator Ninja is primarily intended for grade school students learning fractions, it can easily be used by all! This tool supports whole numbers less than or equal to +/- 9999 and denominators less than or equal to 9999.

What’s New

Version 1.4

This app has been updated by Apple to use the latest Apple signing certificate.

Minor text fix

Ratings and Reviews

4.3 out of 5
3 Ratings

3 Ratings

Gabriel1118 ,

Colorful and easy to use

This app is beautifully done. It is simple to use and shows fraction results in a unique way that is easy to visualize. It is helpful to be able to see the whole numbers in the pie chart and also be able to see or calculate decimals.

wsmitty76 ,

Great idea!

I believe this nontraditional and graphically oriented calculator could be useful for helping kids to learn fractions!

App Privacy

The developer, RayBrooke Software, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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