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
295 Ratings
295 Ratings
Raja Saheb ,

Best calculating app 👍👍

I strongly recommend this app as I've been using this for years and found it very convenient and you can save your important calculation too by muddy pressing ⭐.
If you are looking for best app including percentage and braces support this is the of you must go for. 👍👍👍👍

murugamanian ,

Simply excellent

The calculations are accurate and can be done without breaking head like some other calculators app I have used and got fed up. Thanks. Simple is beautiful.

Arnavkathuria1 ,

Great app

Apple's own calculator is a trash but this one is life saver if you use a lot of calculator , sound provided on keyboard is great just one problem the numbers are written really small making it hard to use it


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 ₹ 159
  2. Theme Pack 2 ₹ 79
  3. Theme Pack 1 ₹ 79


  • Family Sharing

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

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