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Calcbot — The Intelligent Calculator and Unit Converter

By Tapbots

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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 in Version 2.1

What's New:

- Support for Apple Watch

Just in time for your shiny new Apple Watch! Perform basic calculations, conversions, calculate tips, and split bills right from your wrist. The same features are coming to the iPhone today view soon.


- Force press to access operators in Calculator mode and conversions in Converter mode.
- Tap on the result to delete one number at a time.
- Customize which conversion options show up from Calcbot on your iPhone.


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iPad Screenshot 1
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Apple Watch

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Customer Reviews


I cannot believe Calcbot supports the Apple Watch with this update but still does not have an iOS 8 Today widget. “Coming soon” has become this company’s M.O.

Tapbots needs to sort out its priorities.

(Also, guys, give us a new icon for Weightbot. It’s the least you could do.)

Division and subtraction signs look too similar

The font they use makes the division and subtraction signs look very similar, which is a fatal drawback for a calculator app. That should have been an easy fix, but months have passed since I emailed the support and two releases have been made since, but it is still not fixed.


1. When calculating percentage, it doesn't show you the intermediate result, just the final result. For example, when adding 20% to $50, I don't just want to know the total, which is 60, I also need to see that 20% of 50 is 10. Now try that with much more complex numbers. By the way, the native calc app doesn't have this disadvantage.

2. Fav items are of little to no use. For example, I want to be able to fav such expressions as "+20%"
Alas, you can't. Now if you could, calculating any saved percentage would be a breeze: 50, tap your fav item, and BOOM, you have the result.

Address these 2, and I'll definitely re-rate it 5 stars.

Calcbot — The Intelligent Calculator and Unit Converter
View In iTunes
This app is designed for both iPhone and iPad
Works on Apple Watch with an iPhone
  • Free
  • Category: Utilities
  • Updated:
  • Version: 2.1
  • Size: 4.6 MB
  • Apple Watch: Yes
  • Language: English
  • Seller:

Compatibility: Requires iOS 8.2 or later. Compatible with iPhone, iPad, and iPod touch. This app is optimized for iPhone 5, iPhone 6, and iPhone 6 Plus.

Customer Ratings

Current Version:
All Versions:

Top In-App Purchases

  1. Calcbot Pro$1.99
  2. Theme Pack 2$0.99
  3. Theme Pack 1$0.99