Opening the iTunes Store.If iTunes doesn't open, click the iTunes application icon in your Dock or on your Windows desktop.Progress Indicator
Opening the iBooks Store.If iBooks doesn't open, click the iBooks app in your Dock.Progress Indicator

iTunes is the world's easiest way to organize and add to your digital media collection.

We are unable to find iTunes on your computer. To buy and download Oh No Fractions! by Curious Hat, get iTunes now.

Already have iTunes? Click I Have iTunes to open it now.

I Have iTunes Free Download
iTunes for Mac + PC

Oh No Fractions!

By Curious Hat

Open iTunes to buy and download apps.


Now available on Apple TV!

* 2013 Children's Technology Review Editor's Choice Award
* Featured by Apple in the Education Category (New & Noteworthy, Apps for Elementary School, Apps for Middle School)
* Certified by Teachers With Apps "Badge of Distinction"
* Ranked in 73 App Stores around the world

Visually compare, add, subtract, multiply and divide two fractions with a unique and simple interface.

Explore, play and test your fraction knowledge.

Oh No Fractions! is built on the amazing feedback and response we had with the original free Curious Hat Lab app.

We added 4 new fraction operations, so now you can perform the following operations on two fractions:
- Compare
- Add
- Subtract
- Multiply
- Divide

The visualization of fractions with simple, effective and interactive graphs, allows the user to explore the solution at each step.

Statistics are kept for each successful and unsuccessful attempt to solve the problems.
This feature is very useful, in the classroom for example, to monitor the child progress.
Stats can now be shared via email.

Oh No Fractions! was featured multiple times by Apple in the Education Store.

What's New in Version 2.41

Addressed issues that caused the app to freeze under certain conditions.
Please send your comments and suggestions to


iPhone Screenshot 1
iPhone Screenshot 2
iPhone Screenshot 3
iPhone Screenshot 4
iPhone Screenshot 5
iPad Screenshot 1
iPad Screenshot 2
iPad Screenshot 3
iPad Screenshot 4
iPad Screenshot 5
Oh No Fractions!
View in iTunes
This app is designed for both iPhone and iPad
  • $0.99
  • Category: Education
  • Updated:
  • Version: 2.41
  • Size: 4.2 MB
  • Languages: English, French, Italian
  • Seller:
Rated 4+
  • Made for Ages 9–11

Compatibility: Requires iOS 5.1 or later. Compatible with iPhone, iPad, and iPod touch.

Apple TV: Yes

Customer Ratings

We have not received enough ratings to display an average for the current version of this application.
All Versions: