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 2.4.3

- Fixed a couple of bugs

Ratings and Reviews

4.5 out of 5
1K Ratings

1K Ratings

AppleFanCAN ,

The perfect calculator app

I like being able to see the numbers I enter and then the action taken and then the following number etc.

I also like that it shows previous calculations should you need to check them.

Lastly, the copy/paste feature couldn’t be simpler which has proven itself useful on many occasions. You can even email the tape of your calculations which is very handy!

One cannot review this app without giving it a big kudos for the minimalist yet powerful design. The user interface is simple and self-explanatory.

My only wish for this app would be a true black theme for those of us with OLED screens. It helps save battery and just looks cool. It’s such a small request, you can tell how perfect this app is!

AJTouchAddict ,

Sounds stopped working after last update.

No sounds, no haptic feedback on iPhone 6s when using the calculator.

Veadgunt ,

Done with Tapbots. Fan no more.

For context, I have been a fan and supported Paul and Mark since 2009. I bought all their *bot apps. Over the years, I continued to support them by buying every new version of Tweetbots, which happened on a yearly basis at one point. I was okay with this given there was new functionality and features with every new iteration. For whatever reason they decided to go with a different approach with Calcbot. I purchased this when it came out and had access to its full feature set. Recently, I noticed most of the features were no longer available and locked out. I contacted support and they told me I needed to pay to access the upper tier features—features I previously had. That doesn’t seem right to me. I gave them every chance to make this right but they didn’t. Now I’m speaking out, hence, the reason for this review.


16 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+
© 2019 Tapbots LLC
In-App Purchases
  1. Calcbot Pro $2.79
  2. Theme Pack 2 $1.39
  3. Theme Pack 1 $1.39


  • Family Sharing

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

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