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CompPad VS Calcumber

Compare CompPad VS Calcumber and see what are their differences

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Contents:
  1. ยป Base Details
  2. ยป Reviews
  3. ยป Alternatives

CompPad logo CompPad

CompPad is an OpenOffice extension to provide live mathematical and engineering calculations within...

Calcumber logo Calcumber

Calculate in a notebook and share โ€” from everyday math to engineering.
Visit Website
  • CompPad Landing page
    Landing page //
    2022-03-17
  • Calcumber Usefulness of units when calculating the weight of paper
    Usefulness of units when calculating the weight of paper //
    2026-07-25
  • Calcumber Calcumber interactively embedd on a web page
    Calcumber interactively embedd on a web page //
    2026-07-25
  • Calcumber Showcase from arithmetics to thermodynamics
    Showcase from arithmetics to thermodynamics //
    2026-07-25

Use variables, functions, and units and see results immediately. Add comments, copy calculations to apps like Word or Excel, or share them through an editable link. Calculate thermodynamic fluid properties with the integrated CoolProp library.

CompPad

Website
comppad.sourceforge.io
$ Details
-
Platforms
-
Release Date
-
Edit details

Calcumber

Website
calcumber.app
$ Details
free
Platforms
Web Windows Linux Mac
Release Date
2025 June
Startup details
Country
Switzerland
State
Aargau
City
Staufen
Founder(s)
Samuel Hartmann
Employees
1 - 9
Edit details

CompPad features and specs

No features have been listed yet.

Calcumber features and specs

  • ๐ŸŒฟ Naturally type expressions
    get immediate results
  • ๐Ÿ”— Copy and share
    keep calculations editable with a link
  • ๐Ÿงฉ Variables and constants
    pi, e, G, mu0
  • ๐Ÿงช Scientific functions
    sin, acos, log, round, and more
  • โ™จ๏ธ Thermodynamic fluid properties
    refrigeration, heat pumps, steam and air
  • ๐Ÿ’ก Installation optional
    run directly in your browser
  • ๐Ÿ“ฑ Multi-platform
    WebApp, Windows, more to come

Analysis of CompPad

Overall verdict

  • CompPad is a niche, free open-source scientific notepad application that combines text editing with live mathematical calculations. It's a solid, lightweight tool for those needing basic computational note-taking, though it lacks the polish, community support, and advanced features of major commercial alternatives like Mathcad, MATLAB, or Jupyter notebooks.

Why this product is good

  • Free and open-source, making it accessible with no licensing costs
  • Combines narrative text with live calculations in a single document, useful for technical documentation
  • Lightweight application with minimal system resource requirements
  • Simple learning curve compared to more complex computational software
  • Good for straightforward engineering and scientific calculations with units support

Recommended for

  • Students needing a free tool for basic scientific calculations with documentation
  • Engineers who want a lightweight alternative to expensive tools like Mathcad for simple calculations
  • Hobbyists exploring open-source scientific computing tools
  • Users who need to combine explanatory text with numerical calculations in one document
  • Those on a budget who don't require advanced programming or visualization features

Category Popularity

0-100% (relative to CompPad and Calcumber)

CompPad

Calcumber

Technical Computing
100 100%
Technical Computing
0% 0
Math Solver
50 50%
Math Solver
50% 50
Numerical Computation
100 100%
Numerical Computation
0% 0
Online Calculators
0 0%
Online Calculators
100% 100

Questions & Answers

As answered by people managing CompPad and Calcumber.

Why should a person choose your product over its competitors?

Calcumber's answer:

  • Sharing calculations and embedding them in documents or web pages is perfect for education.
  • Natural unit support, just include them in your expression and Calcumber handles it.
  • Free and easy access to thermodynamic fluid-properties.

What makes your product unique?

Calcumber's answer:

  • Easy to use calculator notebook
  • From simple arithmetic to advanced engineering with units
  • Installation optional
  • Send calculation link with full privacy
  • Embed calculation templates, exercices and soultions in documents or interactively in web pages

What's the story behind your product?

Calcumber's answer:

When starting for a Master of Advances Study in Energy Systems, I was looking for a suitable state-of-the-art calculator. Then I built my own Calculator Calcumber and now the Eastern Switzerland University of Applied Sciences is using Calcumber for teaching students in thermodynamics.

How would you describe the primary audience of your product?

Calcumber's answer:

  • The notebook-style calculator is great for everybody who wants more than just a single line calculator.
  • The sharing and embedding features make it Calcumber very well suited for teachers and students. The power of consistently using units is shown immediatly.
  • Engineers will like the unit support, sharing calculations with collegues and if needed the built-in fluid properties calculation.

Which are the primary technologies used for building your product?

Calcumber's answer:

HTML, CSS, TypeScript, PWA, CoolProp

Who are some of the biggest customers of your product?

Calcumber's answer:

Eastern Switzerland University of Applied Sciences

User comments

Share your experience with using CompPad and Calcumber. For example, how are they different and which one is better?
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What are some alternatives?

When comparing CompPad and Calcumber, you can also consider the following products

SMath Studio - Tiny, powerful, free mathematical program with WYSIWYG editor and complete units of measurements support.

Numara Calculator - A simple but powerful notepad calculator which evaluates expressions as you type.

PTC Mathcad - PTC Mathcad PTC Mathcad is Engineering Math Software That Allows You to Perform, Analyze, and Share Your Most Vital Calculations.

SpeedCrunch - SpeedCrunch. SpeedCrunch is a high-precision scientific calculator featuring a fast, keyboard-driven user interface. It is free and open-source software, licensed under the GPL. Download Documentation Donateย .

Miramath - Miramath is an open source project inspired by the MathCad mathematical application.

Qalculate! - Qalculate! is a multiplatform multi-purpose desktop calculator.

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