Download on the App Store

History Tape

Every calculation you enter gets saved to the history tape. Refer to calculations later or send them right back to the calculator.

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.

Unit Conversion*

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.


Optionally switch between 9 gorgeous themes to fit your mood or style.

Sounds & Animation

Sounds & animation that provide positive feedback when performing calculations.

Scientific Functions

Calcbot supports common scientific functions in case you ever need them.

iCloud Sync

Sync your history tape, constants, and faves across multiple Macs and soon to all of your iOS devices.


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.

Email Tape

Quickly send your entire history tape contents as an email.

*In-App Purchase Required.

Calcbot for Apple Watch

Calcbot for Apple Watch

With Calcbot on your iPhone, you'll automatically have access to Calcbot on your Apple Watch.

  • Calculate
    Perform basic computations quickly with our signature expression view.
  • Convert
    Convert with 4 pre-defined conversions like USD to Euros or Pounds to Kilograms. Pro users can customize them from the Calcbot Settings.
  • Calculate & Split Tips
    Calculate tips and split bills effortlessly.