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Graph.tk VS Calcumber

Compare Graph.tk VS Calcumber and see what are their differences

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

Graph.tk logo Graph.tk

Online graph sketching app that can graph functions and numerically solve differential equations.

Calcumber logo Calcumber

Calculate in a notebook and share โ€” from everyday math to engineering.
Visit Website
  • Graph.tk Landing page
    Landing page //
    2019-09-29
  • 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.

Graph.tk

Website
graph.tk
$ 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

Graph.tk features and specs

  • User-Friendly Interface
    Graph.tk features a simple and intuitive user interface, which makes it easy for users to quickly create and manipulate graphs without extensive technical knowledge.
  • Real-Time Graphing
    The tool allows for real-time updates, enabling users to see changes and plot graphs dynamically as they input new data or modify parameters.
  • Web-Based Application
    Being a web-based application, Graph.tk can be accessed from anywhere without needing to install software, which enhances its accessibility and convenience.
  • Educational Tool
    Graph.tk is particularly useful in educational settings for teaching and learning about graph concepts and data visualization due to its straightforward and engaging design.

Possible disadvantages of Graph.tk

  • Limited Features
    Graph.tk may lack advanced features found in more comprehensive graphing software, limiting its use for complex data analysis.
  • Dependence on Internet
    As a web-based tool, Graph.tk requires an internet connection to function, which can be a limitation in areas with poor connectivity.
  • Scalability Issues
    The platform may struggle with larger datasets or more complex graphing requirements, impacting performance for heavy users.
  • Lack of Export Options
    Users might find the export options limited, making it difficult to seamlessly integrate Graph.tk outputs with other systems or tools.

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 Graph.tk

Overall verdict

  • Graph.tk was a lightweight, browser-based online graphing calculator that offered a fast and free way to visualize mathematical functions without any installation, making it a handy tool for quick plotting needs.

Why this product is good

  • Completely free to use with no sign-up required
  • Runs directly in the browser with no software installation
  • Simple, clean interface suited for quick function plotting
  • Supports interactive panning and zooming of graphs
  • Good for visualizing standard mathematical equations on the fly

Recommended for

  • Students learning algebra, calculus, or precalculus
  • Teachers needing a quick way to demonstrate functions in class
  • Anyone wanting a fast, no-frills online graphing tool
  • Users who need to visualize equations without installing dedicated software

Category Popularity

0-100% (relative to Graph.tk and Calcumber)

Graph.tk

Calcumber

Online Calculators
58 58%
Online Calculators
42% 42
Technical Computing
100 100%
Technical Computing
0% 0
Education
0 0%
Education
100% 100
Engineering Calculator
55 55%
Engineering Calculator
45% 45

Questions & Answers

As answered by people managing Graph.tk 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

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What are some alternatives?

When comparing Graph.tk and Calcumber, you can also consider the following products

Desmos - A beautiful, innovative, and modern online graphing calculator.

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

Curve Fitting Online - Standards Applied is a growing library of tools for today's Engineers.

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 .

calculator.net - Online calculator for quick calculations, along with a large collection of calculators on math, finance, fitness, and more, each with related in-depth information.

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

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