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iota-calc X is a calculator for programmers.

Key Features:

  • Supports a rich expression format, which is in most cases identical to what you would type in your programming language.
  • Support for adding unlimited numbers of variables or variable expressions.
  • Built-in debugger that lets you see the expression simplified step by step.
  • Debugger Back-step lets you backup as many steps as you like so that you can replay critical operations.
  • C/C++ operator precedence.
  • Mouse optional, all calculator commands and functions can be done using the keyboard alone.
  • Mini-Calc Mode more...

What's New

Version 1.8.6:
  • Now computes negative binary and negative octal numbers.
  • Now allows you to see the calculator interface at various scaling factors 1x, 1.2x, 1.5x, 1.8x, 2x, 2.5x and 3x. See iota-calc preferences to change the scaling factor.
  • Adds a "Restore Factory Defaults" button which restores each preference to its default state.


Mac OS X 10.1 or later

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iota-calc User Discussion

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Anonymous Member IconReview

I don't see any notable improvements over 10.4's built-in Calculator in Programmer mode other then costing $5.

Reply1 reply
Version 1.5.5
Cortis Clark (Developer)

Tiger's calculator is a nice improvement over previous calculators that have shipped with the system. It however isn't an expression calculator like iota-calc is, meaning you can't type in your expression as you would in code but rather have to break it down piece by piece to feed it in. To make that more powerful iota-calc has unlimited variables, and can remember expressions as well. iota-calc also has a debugger to help you see where your thinking has gone wrong with your expression. There are also quite a few niceties of iota-calc that Tiger's built-in calculator doesn't have. My favorites are the following: the Ascii-Chart with annotations and type and find characters, Icon update in the dock so you can see your last answer, and being able to create an unlimited number of calculators. Of course there are many other improvements which you can read about in the feature overview.

Anonymous Member IconReview

Very very useful little app, well worth the money the author is asking for!

Reply0 replies
Version 1.3
There are no Ratings for this App yet.
> 5 1


Current Version (1.x)


Downloads 9,410
Version Downloads 906
License Shareware
Date 17 Jan 2011
Platform OS X / PPC 32 / Intel 32
Price $19.95
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