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Testizer VS Calcumber

Compare Testizer 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. featured
Contents:
  1. ยป Base Details
  2. ยป Reviews
  3. ยป Alternatives

Testizer logo Testizer

TESTIZER is a web-based service that provides exams designed to evaluate language abilities and professional competencies

Calcumber logo Calcumber

Calculate in a notebook and share โ€” from everyday math to engineering.
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  • Testizer List of language proficiency tests
    List of language proficiency tests //
    2026-04-17
  • Testizer List of tests in graphic design, digital marketing, management, and IT
    List of tests in graphic design, digital marketing, management, and IT //
    2026-04-17
  • Testizer Language tests are available for all CEFR levels
    Language tests are available for all CEFR levels //
    2026-04-17
  • Testizer Sample certificate issued by TESTIZER
    Sample certificate issued by TESTIZER //
    2026-04-17
  • Testizer The testing process on testizer.com
    The testing process on testizer.com //
    2026-04-17
  • Testizer English Language Proficiency Test interface
    English Language Proficiency Test interface //
    2026-04-17
  • Testizer Adobe Photoshop Test interface
    Adobe Photoshop Test interface //
    2026-04-17

TESTIZER offers its users to take online certification tests, and upon successful completion, receive a personalized certificate. The platformโ€™s language assessments follow the CEFR standards, spanning levels A1 through C2. Each exam features 25 multiple-choice questions focusing on grammar and vocabulary, with an approximate duration of 25 minutes. Scores are sent instantly by email, and each certificate includes a QR code for straightforward verification. There are no limits on retakes that are free of charge. TESTIZER certificates can be attached to job applications or shared on LinkedIn to boost career visibility. In addition to language exams, TESTIZER offers exams in fields like graphic design, digital marketing, management, and IT. All tests can be taken on laptops, tablets, or smartphones without the need for specialized equipment

  • 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.

Testizer

Website
testizer.com
Pricing URL
Official Testizer Pricing
$ Details
freemium $10.0 / One-off (Certificate)
Platforms
Web Mobile Windows MacOS
Release Date
-
Edit details

Calcumber

Website
calcumber.app
Pricing URL
-
$ 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

Testizer features and specs

  • Wide Range of Language Tests
    Testizer offers online proficiency tests for a broad variety of languages including English, French, Spanish, German, Chinese, and many others, making it a versatile platform for multilingual assessment.
  • Quick and Convenient Online Testing
    Tests can be taken entirely online from anywhere, without the need to visit a testing center. The process is fast, typically taking around 25 minutes, and results are available immediately.
  • Internationally Recognized Certificates
    Upon completion, users receive a certificate with a CEFR level (A1โ€“C2) that can be used for professional or academic purposes, adding credibility to the assessment.
  • Affordable Pricing
    Compared to traditional language proficiency exams like IELTS or TOEFL, Testizer offers its certification at a significantly lower cost, making it accessible to a wider audience.
  • User-Friendly Interface
    The platform is designed to be straightforward and easy to navigate, allowing test-takers to register, take their test, and receive results with minimal hassle.

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 Testizer

Overall verdict

  • Testizer appears to be a testimonial management tool designed to help businesses collect, curate, and display customer testimonials and reviews on their websites. It's a solid choice for small to medium businesses looking for a straightforward, dedicated solution to build social proof without needing extensive technical setup.

Why this product is good

  • Simplifies the process of collecting testimonials via forms, video, or import from other platforms
  • Provides customizable widgets to display testimonials on websites, improving conversion rates through social proof
  • Offers integration options with popular website builders and platforms
  • Generally more affordable than building a custom testimonial system from scratch
  • User-friendly interface that doesn't require technical expertise to set up

Recommended for

  • Small business owners wanting to showcase customer feedback
  • Freelancers and service providers building credibility online
  • E-commerce store owners looking to boost conversions with social proof
  • Marketing teams needing a quick way to gather and display testimonials
  • Startups wanting an affordable alternative to enterprise review management tools

Category Popularity

0-100% (relative to Testizer and Calcumber)

Testizer

Calcumber

Education
61 61%
Education
39% 39
Online Education
100 100%
Online Education
0% 0
Engineering Calculator
0 0%
Engineering Calculator
100% 100
Candidate Screening And Assessment
100 100%
Candidate Screening And Assessment
0% 0

Questions & Answers

As answered by people managing Testizer 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 Testizer and Calcumber. For example, how are they different and which one is better?
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What are some alternatives?

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

ClassMarker - The ClassMarker online testing website, is a professional, easy to use, online quiz maker that marks your tests and quizzes for you. Create online quizzes free quiz maker. Web-based online testingWeb-based online testing service | Free quiz maker.

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

TrackTest - TrackTest.eu is an online assessment tool for companies and individuals.

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 .

Duolingo - Duolingo is a free language learning app for iOS, Windows and Android devices. The app makes learning a new language fun by breaking learning into small lessons where you can earn points and move up through the levels. Read more about Duolingo.

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

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