Software Alternatives, Accelerators & Startups
Register | Login

errProof VS Calcumber

Compare errProof VS Calcumber and see what are their differences

FlexiQuiz
FlexiQuiz is a powerful online test generator that enables you to create engaging online quizzes, tests, or exams in minutes. Choose from 100's of features to create a customized quiz that meets your objectives for business, education, or fun. sponsored
Contents:
  1. ยป Base Details
  2. ยป Reviews
  3. ยป Alternatives

errProof logo errProof

The website has a lot of useful and unique tools.

Calcumber logo Calcumber

Calculate in a notebook and share โ€” from everyday math to engineering.
Visit Website
Not present
  • 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.

errProof

Website
errproof.com
$ 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

errProof 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 errProof

Overall verdict

  • I don't have verified, specific information about errProof (errproof.com) in my knowledge base, so I can't confidently confirm its legitimacy, quality, or reputation. I'd recommend researching it further before making a decision.

Why this product is good

  • I don't have reliable data on this specific product or service to evaluate its features or performance.
  • No verifiable user reviews, ratings, or third-party assessments are available to me for this site.
  • Unable to confirm business legitimacy, security practices, or customer service quality without direct verified sources.
  • It's possible this is a newer, niche, or less widely covered service that hasn't been extensively documented.

Recommended for

  • Before using this service, check for verified reviews on trusted platforms like Trustpilot, BBB, or Reddit.
  • Verify the company's business registration and contact information.
  • Look for independent expert reviews or comparisons within its specific industry or niche.
  • Consider reaching out to their customer support with questions before committing.
  • Check domain age and website security certificates (SSL) as basic trust indicators.

Category Popularity

0-100% (relative to errProof and Calcumber)

errProof

Calcumber

Calculators
100 100%
Calculators
0% 0
Online Calculators
0 0%
Online Calculators
100% 100
Engineering Calculator
100 100%
Engineering Calculator
0% 0
Math Tools
0 0%
Math Tools
100% 100

Questions & Answers

As answered by people managing errProof 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 errProof and Calcumber. For example, how are they different and which one is better?
Log in or Post with

What are some alternatives?

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

WolframAlpha - WolframAlpha brings expert-level knowledge and capabilities to the broadest possible range of peopleโ€”spanning all professions and education levels.

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 .

Wolfram Mathematica - Mathematica has characterized the cutting edge in specialized processingโ€”and gave the chief calculation environment to a large number of pioneers, instructors, understudies, and others around the globe.

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

Calculator OSX App - Real Time.

Loading...