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Calcumber VS FluencyClock

Compare Calcumber VS FluencyClock and see what are their differences

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Calcumber logo Calcumber

Calculate in a notebook and share — from everyday math to engineering.
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FluencyClock logo FluencyClock

A free calculator built on the US Foreign Service Institute's published class-hour data — adjusted for the level you want, the languages you already speak, and how you really plan to study.
  • 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.

  • FluencyClock Landing page
    Landing page //
    2026-08-29

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

FluencyClock

Website
fluencyclock.com
$ Details
-
Platforms
-
Release Date
-
Edit details

Calcumber features and specs

  • 🌿 Naturally type expressions
    get immediate results
  • 🔗 Copy and share
    keep calculations editable with a link
  • 🧩 Variables and constants
    pi, e, G, mu0
  • 🧪 Scientific functions
    sin, acos, log, round, and more
  • ♨️ Thermodynamic fluid properties
    refrigeration, heat pumps, steam and air
  • 💡 Installation optional
    run directly in your browser
  • 📱 Multi-platform
    WebApp, Windows, more to come

FluencyClock features and specs

No features have been listed yet.

Category Popularity

0-100% (relative to Calcumber and FluencyClock)

Calcumber

FluencyClock

Math Solver
100 100%
Math Solver
0% 0
Education
0 0%
Education
100% 100
Online Calculators
100 100%
Online Calculators
0% 0
Education Tools
0 0%
Education Tools
100% 100

Questions & Answers

As answered by people managing Calcumber and FluencyClock.

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 Calcumber and FluencyClock. For example, how are they different and which one is better?
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What are some alternatives?

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

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

Fluently - Level up your comprehension in any language

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 Donate .

Mondly - Learn 33 languages in 500 bite-size lessons and 14 conversational modules.

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

Numi App - Numi is a beautiful text calculator for Mac.

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