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Calcumber VS devfair

Compare Calcumber VS devfair and see what are their differences

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Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.
Contents:
  1. ยป Base Details
  2. ยป Reviews
  3. ยป Alternatives

Calcumber logo Calcumber

Calculate in a notebook and share โ€” from everyday math to engineering.
Visit Website

devfair logo devfair

Real-time collaboration for remote development teams
  • 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.

  • devfair Landing page
    Landing page //
    2021-12-15

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

devfair

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

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

devfair features and specs

  • User-Friendly Interface
    Devfair provides an intuitive and easy-to-navigate interface, making it accessible for both beginners and experienced developers.
  • Collaboration Tools
    The platform offers robust collaboration tools that facilitate communication and teamwork between developers working on the same project.
  • Extensive Resource Library
    Devfair features a comprehensive library of resources and tutorials that can help users enhance their development skills.
  • Community Support
    There is a strong community around Devfair, providing support, advice, and networking opportunities for developers.

Possible disadvantages of devfair

  • Limited Free Features
    While Devfair offers a free version, many of its advanced features and resources require a paid subscription.
  • Learning Curve
    Despite the user-friendly design, there may be a learning curve for those unfamiliar with certain development practices or tools.
  • Performance Issues
    Some users report performance issues, particularly with large projects or when many users are accessing the platform simultaneously.
  • Integration Limitations
    There may be limitations in integrating Devfair with certain other development tools or platforms, leading to potential workflow interruptions.

Analysis of devfair

Overall verdict

  • I don't have reliable, verified information about devfair.com to make an informed assessment of its quality, legitimacy, or service offerings. I'd recommend researching independently before using this platform.

Why this product is good

  • Limited publicly available information makes it difficult to verify claims about this service
  • No verified user reviews or track record data is accessible to me
  • Unable to confirm business legitimacy, security practices, or customer support quality

Recommended for

  • Users should conduct independent research including checking reviews on trusted platforms
  • Users should verify business registration and legitimacy through official channels
  • Users should exercise caution and perhaps start with small transactions if engaging with this service
  • Consider consulting recent user reviews on sites like Trustpilot, Reddit, or industry forums for current information

Category Popularity

0-100% (relative to Calcumber and devfair)

Calcumber

devfair

Education
100 100%
Education
0% 0
Productivity
0 0%
Productivity
100% 100
Engineering Calculator
100 100%
Engineering Calculator
0% 0
SaaS
0 0%
SaaS
100% 100

Questions & Answers

As answered by people managing Calcumber and devfair.

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 devfair. For example, how are they different and which one is better?
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Social recommendations and mentions

Based on our record, devfair seems to be more popular. It has been mentiond 1 time since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Calcumber mentions (0)

We have not tracked any mentions of Calcumber yet. Tracking of Calcumber recommendations started around Jul 2026.

devfair mentions (1)

  • We've been working on a tool for remote dev teams to automate their agile meetings, here's a demo clip from the estimation poker mode we've been working on! We used nivo, css doodle and react-states on top of tailwind, reactjs, chime sdk and kotlin
    Here's the website and my email in case: joseph@devfair.com. Source: about 5 years ago

What are some alternatives?

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

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

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 .

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

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

Soulver - Soulver is a software application that functions as a calculator that allows you type a continuous stream of information rather than having to input data into multiple cells.

Numby - A natural language calculator for your terminal and macOS

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