The Fraction Calculator feels and behaves exactly like a calculator with one exception, you're working with fractions. So now when homework (checking of course) calls for fractions, or your carpentry project needs you to add eighths and sixteenths dozens of times, or maybe you just want to be able to recalculate that dinner recipe to accommodate for five rather than two – turn to the Fraction Calculator.

Fraction Calculator allows for adding, subtracting, multiplying and dividing both positive and negative fractions, displaying the results both as a fraction and a decimal. There are also functions to allow for simplifying, reciprocals, squares and square roots.

Fraction Calculator Supports the Touch Bar on the MacBook Pro, and is fully VoiceOver accessible.

What’s New

Version 1.4

Updated for macOS 11 (Big Sur), as well as support for Apple Silicon Macs.

Ratings and Reviews

5.0 out of 5
5 Ratings

5 Ratings

sgginc ,

WOW! This is great. I wish other calculators where as well thought out.

This is extremely easy to use.

The calculator’s window is resizable
making it very easy to read.
The three keypads are great.

This is my favorite calculator.

I wish my other calculators had
resizable windows and where as
thoughtfully layed out.


Moovvv ,

From Zero to Hero

re: v1.1.1 Love the idea of this. Have a similar app on my iPhone, but would be convenient to have on my Mac. Never opens. Always crashes on launch. Have contacted developer and waiting on response.

Not only did they respond, they immediately gave me a workaround to use till the fix came out. This version now works without having to install fonts not needed by the OS (but installed by default with the OS). In the printing/layout industry, it’s not uncommon to pare down the installed fonts to just what’s necessary for the OS to use, and use a font manager like Extensis Suitcase Fusion for all other fonts to be enabled/disabled as needed.

That practice is what caused this app to fail, it needed a font that I normally have disabled. Added the font back in and the app worked, but to my dismay, it only used the number keys above the qwerty row, not the number pad laid out like their own app’s number pad. I mentioned this to them last week after using their workaround.

re: current v1.1.2 Now, less than a week later, a new version is out and not only does it not need me to install/enable specific fonts, it also has added support for the number keypad. That makes them not only helpful, but responsive to customer feedback and makes the app almost perfect, which is why I’ve changed my rating from 1 to 4.

The only improvement that comes to mind now would be adding a decimal key. I know I’m constantly adding decimal numbers from a online book spine calculator to hardbound book templates from various vendors that invariably use fractions. Don’t know if many other’s need to work with decimal/fraction combinations, but I would definitely appreciate the ability. Until then, kudos for a very intuitive app and for your quick turnaround on the fix.

silex-design ,

Quits unexpectedly

Purchased and installed this on 2 Macs with Yosemite. It quits “unexpectedly” on both.

App Privacy

The developer, PalaSoftware Inc., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

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

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