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 2.4.2

Updated Localizations

---- 2.4.1 -----
- Added watch complication
- Added ability to use negative numbers in watch converter
- Sped up adding to tape when there's a lot of items

---- 2.4 -----
Calcbot now features a completely new Apple Watch app that’s faster, more intuitive, and features full unit conversion support. We’ve also redesigned the conversion category icons, added a new theme, and included the option to change the color of the app icon. Now is the time to go pro and love your calculator!

Ratings and Reviews

4.5 out of 5
886 Ratings
886 Ratings
AJTouchAddict ,

Sounds stopped working after last update.

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

Dpkform ,

very frustrating interface

I have upgraded this app with IAP.

I want to love this app. Its appearance is good - not too plain not overdone. Apple Watch app is a good bonus and well laid out. I was looking for a combination calculator and conversion app.

Problem is I am constantly frustrated when trying to do simple things. The developer claims this app is intuitive, but I find the opposite to be true.

After a month of swiping, pressing, and searching for solutions on Google, I still cant figure out something as simple as getting rid of the $ sign in the calculator numbers display. I want to just do plain arithmetic, I have tried altering conversions, I am at a loss.

Swiping the result field left and right (but not any other part of the calculator) to access conversion options is not at all intuitive. Took me quite some time to figure out now to access the tape. Turns out, I think, that you first have hit the = sign, and then swipe down in the small field above results.

You hit a “settings gear” icon to clear the tape or email it, or otherwise. These are actions, not settings. They should not be behind a classic “settings” icon.

Other than the non-intuitive interface it is a great app. I think the developer can’t see the problem because they understand their own design and to them it SEEMS intuitive.

The “action” part of the interface, if you know what to do, actually works quite well. If you use this app all the time it may become second nature. If like me and I assume most people, you use this app every once in a while, you may find the interface to be frustratingly obtuse.

What this app desperately needs IMO is an on screen help function. Perhaps a ? symbol that when you press it brings up a screen overlay with text that describes what the various parts of the screen can do.

With that I would give it 5 stars.

Davis4Ever ,

No Support - Pro Features broken on Watch

Convert and Tips not working on Watch. Refers to check iPhone app. No way in app to report issues. Contact Us option doesn't work. Calcbot twitter support is DOA for over a year. Very sad for an app that used to be the top of its class. Lowest possible rating until improvements are made to support.


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+
© 2018 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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