CalcNerd - for Watch and iPhone 4+

All Star Apps

Designed for iPad

    • 5.0 • 4 Ratings
    • Free



CalcNerd is a calculator for Apple Watch and iPhone.

Calculations stay in sync between your watch and your iPhone, so you can easily start the calculation on the watch, then move to the iPhone if you need to do something more in-depth.

As you type your calculation in, you'll see the expression you are building along with the current total.

Press and hold the delete button to quickly clear your entire expression.

NOTE: CalcNerd does not require an Apple Watch.

CalcNerd is also designed for iPad.


The CalcNerd calculator includes all basic functions and operators including addition, subtraction, multiplication, division, exponents, and basic trigonometry.

For a complete list of functions, view the screenshots. The Apple Watch app includes most but not all of the functions offered by the main app.


Is there a missing function that you'd like to see added? Leave us a review and tell us what you'd like to see.


To see other apps by "All Star Apps", search "All Star Apps" in the App Store or search "Weather Nerd".

What’s New

Version 1.2

This app has been updated by Apple to display the Apple Watch app icon.

Ratings and Reviews

5.0 out of 5
4 Ratings

4 Ratings

lyman1946 ,

Apple Watch calculator.

I think this is the best calculator watch for the Apple Watch out there. Will continue to use this at all times. Could you put the calculator and glances in the Apple Watch it would make it a lot easier to get to. But this by far is the best one I have used.

R3V1wZ ,


This is the best calculator app out there. Unlike others, there are no annoying, flashy, ads; no pop ups; or anything of the sort. Thanks!

Golfer LW ,

Super handy

Very convenient to switch back and forth

App Privacy

The developer, All Star Apps, 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.

More By This Developer

You Might Also Like