Calcbot is an intelligent calculator and unit converter for the rest of us. Featuring an easy-to-read history tape, expression view, intuitive conversion, and much more!

History Tape.
Every calculation you enter gets saved to the history tape. Refer to calculations later or send them right back to your current calculation.

Expression View.
Calcbot's original expression view allows you to see everything you have typed so you'll never forget what you entered or miss a typo.

Apple Watch Extension.
Perform basic calculations, conversions, calculate tips, and split bills right from your Apple Watch.

Convert any of your calculations with over 500 units across 22 different categories including auto-updating currency rates.

Fave a calculation and get instant access to its result via the Favorites Key. No more cryptic memory keys.

Scientific Functions.
Rotate your device into landscape mode to gain access to common scientific functions.

Get instant access to scientific constants like Pi, Atomic Mass, or add your own*.

Round for Currency.
Have all of your results rounded to two decimal places.

iCloud Sync.
Sync your history tape, constants, and faves across all of your Macs, iPhones, and iPads.

Sounds & Animations.
Beautiful custom animations and sound effects provide positive feedback and an enjoyable experience while performing calculations.

* In-App purchase required.

What's New

Version 2.3.1

- Fixed an issue where Apple Watch conversion setting changes would sometimes be ignored

Ratings and Reviews

4.7 out of 5
376 Ratings
376 Ratings

It all adds up

This is the one. You don’t need another calculator app; you need this one. Been on my home screen for years. Buy it.

Jack Jacobs

iPhone X

I love this app but ever since you released the iPhone X version of the App it looks horrible on the iPhone X. Please bring back the old look


Does not work on watchOS 5.

Requires an upgrade to work on watchOS 5.

A disappointment.

5 Stars if this gets fixed without further delay, 2 stars because it is not yet fixed.


10.4 MB
Requires iOS 11.0 or later. Compatible with iPhone, iPad and iPod touch.
English, Arabic, German, Japanese, Russian, Simplified Chinese
Age Rating
Rated 4+
© 2017 Tapbots LLC
In-App Purchases
  1. Calcbot Pro $2.99
  2. Theme Pack 2 $1.49
  3. Theme Pack 1 $1.49


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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