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what is speedcrunch fr?

ruphy/speedcrunch — explained in plain English

Analysis updated 2026-07-17 · repo last pushed 2008-06-04

118C++Audience · generalComplexity · 2/5DormantLicenseSetup · easy

tl;dr

SpeedCrunch is a free, open-source desktop calculator for power users. You type math expressions on the keyboard, get precise results up to 50 digits, recall past calculations, and define your own variables.

vibe map

mindmap
  root((repo))
    What it does
      Keyboard driven math
      Up to 50 digit precision
      History saved between sessions
    Features
      Auto completion
      Custom variables
      Ans variable for results
      Degrees and radians
    Use cases
      Engineering calculations
      Science calculations
      Finance and percent
      Student homework
    Tech stack
      C plus plus
      Qt cross platform
    Audience
      Engineers
      Scientists
      Students
      Power users

Code map

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filefunction / class

what do people make with this?

VIBE 1

Run a series of engineering or science calculations without re-entering expressions.

VIBE 2

Define custom variables like x=0.3 and reuse them in trigonometric functions.

VIBE 3

Scroll back through previous calculation history saved between sessions.

VIBE 4

Quickly compute finance or business calculations using the percent operator.

what's the stack?

C++Qt

how it stacks up fr

ruphy/speedcrunchg0ldyy/fh6-universal-radiomchughalex/skate3recomp
Stars118116108
LanguageC++C++C++
Last pushed2008-06-04
MaintenanceDormant
Setup difficultyeasymoderatehard
Complexity2/53/54/5
Audiencegeneralgeneraldeveloper

Figures from each repo's GitHub metadata at analysis time.

how do i run it?

Difficulty · easy time til it works · 5min

Download and run the pre-built installer for your platform, no compilation or extra dependencies required.

You can use, modify, and distribute this software freely, but any modified versions must also be open source under the same license.

in plain english

SpeedCrunch is a free desktop calculator designed for people who need more than what a standard calculator offers. Think of it as a middle ground between your operating system's basic calculator and a full spreadsheet program. You type a math expression, hit Enter, and get a precise result, all without lifting your hands off the keyboard. What makes it different is how it handles input. As you type, it offers auto-completion for function names, automatically closes parentheses for you, and lets you recall previous calculations using the up and down arrow keys. You can define your own variables (like setting x=0.3 and then using sin(x) later), and a special variable called ans always holds your most recent result so you can build on it. The calculator supports a wide range of built-in math and trigonometry functions, works with up to 50 decimal digits of precision, and saves your expression history between sessions. This tool is built for power users, engineers, scientists, students, or anyone who regularly runs through a series of calculations and wants to avoid re-entering the same expressions. If you've ever wished you could just scroll back through yesterday's math work, or copy a result to your clipboard with a quick shortcut, this solves that problem. The percent operator is handy for quick business or finance calculations, and you can switch between degrees and radians for trigonometry on the fly. The project is written in C++ and relies on Qt, a widely used toolkit for building cross-platform desktop applications. It's available for Windows, Mac, and Linux. The software is open source under the GNU General Public License, meaning anyone can use, modify, and distribute it freely.

prompts (copy fr)

prompt 1
How do I define a custom variable in SpeedCrunch and use it in a trigonometric function like sin(x)?
prompt 2
How do I switch between degrees and radians in SpeedCrunch for trigonometry calculations?
prompt 3
How do I recall and reuse a previous calculation result in SpeedCrunch using the ans variable?
prompt 4
How do I install and run SpeedCrunch on Windows, Mac, or Linux?

Frequently asked questions

what is speedcrunch fr?

SpeedCrunch is a free, open-source desktop calculator for power users. You type math expressions on the keyboard, get precise results up to 50 digits, recall past calculations, and define your own variables.

What language is speedcrunch written in?

Mainly C++. The stack also includes C++, Qt.

Is speedcrunch actively maintained?

Dormant — no commits in 2+ years (last push 2008-06-04).

What license does speedcrunch use?

You can use, modify, and distribute this software freely, but any modified versions must also be open source under the same license.

How hard is speedcrunch to set up?

Setup difficulty is rated easy, with roughly 5min to a first successful run.

Who is speedcrunch for?

Mainly general.

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