RedCrab Calculator V

RedCrab, Download at heise Version 5.2 freeware download

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RedCrabPLUS Shareware
contains additional functions that can be released as shareware: functions for financial calculation, calculation with units of measure. Writing your own functions in an integrated programming language etc.



RedCrab V Updates

Version 5.2

User interface improved. Menus in windows 7 improved.
Further improvements and bug fixes in details.

Version 5.1.3

  • Subscript and superscript handling improved.
  • The Home and End keys handling improved.
  • DIV and SQR supports calculation with units ..
  • Fraction bar can be drawn with double-click on the slash key. (previously slash + CTRL).
  • Display of octal numbers improved.
  • And further improvements in details...

Version 5.1.2

  • Display, font and result settings are now saved for the next session.
  • Settings are saved in the subdirectory tools of the start directory.
  • Problems by insert of fraction lines fixed.
  • Appearance of the root symbol improved.
Version 5.1.1 (Security Update)

  • Edit Box improved. Text formatting problems fixed. Word Wrap function implemented.
  • Display of chart boxes and chart series improved.
  • Result formatting problems of Greek letters fixed.
  • Problems with Alt key codes fixed. (V5.1.1.47)

RedCrab Calculator V is more than an update.

Version V is converted completly to a new developer system. The new system is a prerequisite for current and future developments.

Visible feature is the new WPF interface. For example, all buttons have tooltips, which are partially supplemented with graphic or examples.

This inevitably brought changes. Users of older versions of RedCrab please read the ReadMe file in the upgrade

New in Version 5.1
  • New WPF user interface
  • Improved tooltips with graphic and examples
  • Tooltips in German and English. Other languages can be added.
  • Switch between text insert or overwrite is possible.
  • New functions
  • Functions for financial calculation(+)
  • Accuracy 28 places(+)
  • Calculation with units of measure(+)
  • Individual formatting of results(+)
  • Predefined result formats for the most common symbols(+)
  • Individual toolbars on inserted boxes(+)
  • More then 30 chart types(+)
(+) These features are available only in shareware mode.

RedCrab - Math Software

RedCrab is a scientific, statistics and finacial calculation software with a full screen formula editor. The mathematical expressions can be entered in an editor window similar to a piece of paper.

RedCrab is a calculator that exploits the possibilities of PC's. Easy to use like a pocket calculator, but provided with full screen editor, which supported corrections, saving and printing as a word processing program.

The editor supports the entry of complex algebraic equations like fractions, square roots, exponents, variables etc. for technical and scientific applications.

Several tasks can be written in the same worksheet. Results can be adopted in other mathematical problems as in a spreadsheet program. Images and texts can imported to describe complex calculations.

System requirement RedCrab Calculator V (5.1)
Microsoft *Windows Vista, W7, W8.x, W10
Framework 4.5 or higher

RedCrab Version 4.48 runs with
Microsoft Windows XP.
download V4.48

RedCrab Version V4.13 runs with o
perating system Linux with Wine runtime system.
download V 4.13

RedCrab is portable

RedCrab is fully portable. RedCrab is composed in one executable file. No installation is required.

RedCrab starts from external disk, e.g. USB flash drive or CD / DVD

Program settings are stored in a file on the user directory. No entries in the Windows registry.

Quick start without studying the manual

The handling of the basic functions is just like a conventional calculator. There is no training required.

Whoever can operate a pocket calculator can also use RedCrab without studying the manual. This guide describes fundamentally the advanced features which a normal calculator does not possess.

*Windows is a registered trademark of Microsoft Corporation.