Software Alternatives, Accelerators & Startups

Edlink VS Calcumber

Compare Edlink VS Calcumber and see what are their differences

Edlink logo Edlink

Edtech runs on Edlink

Calcumber logo Calcumber

Calculate in a notebook and share — from everyday math to engineering.
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  • Edlink Edlink API Dashboard
    Edlink API Dashboard //
    2026-05-19

Edlink helps edtech companies build and scale integrations with learning institutions including districts and universities. Our unified API enables teams to integrate quickly with all major LMS, SIS, and identity management providers.

  • 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.

Edlink

Website
ed.link
$ Details
paid $499 / Monthly (Start Plan: 5,000 Included Synced People)
Platforms
-
Release Date
-
Startup details
Country
United States
State
Texas
City
Austin
Founder(s)
Amanda Goodson, Dakota Gorden
Employees
20 - 49

Calcumber

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

Edlink features and specs

  • Unified integration API
    Edlink provides a single API that connects to many different Learning Management Systems (LMS), Student Information Systems (SIS), and rostering providers, so developers can build one integration instead of many custom ones for each platform.
  • Simplified data syncing and rostering
    It handles the complexity of syncing rosters, courses, enrollments, and grades across educational systems, normalizing data into a consistent format that saves significant engineering time.
  • Built-in SSO and authentication
    Edlink offers single sign-on capabilities and secure authentication flows, making it easier for edtech products to let teachers and students log in with their existing school credentials.
  • Focus on education-specific compliance
    Because it is purpose-built for the education sector, it supports standards like OneRoster, LTI, and helps address data privacy considerations such as FERPA and COPPA relevant to student data.
  • Developer-friendly documentation
    Edlink provides fairly comprehensive documentation, dashboards, and tools that help developers set up, test, and monitor integrations more quickly than building against fragmented native APIs.

Possible disadvantages of Edlink

  • Cost for smaller companies
    As a paid third-party middleware service, Edlink adds ongoing subscription or usage costs that may be prohibitive for early-stage startups or small edtech teams with tight budgets.
  • Vendor lock-in
    Building your integration layer entirely around Edlink creates dependency on their platform, pricing, and roadmap, which can be difficult to migrate away from later.
  • Abstraction limitations
    Because it normalizes data across many systems, some platform-specific features or nuanced data fields may not be fully exposed, limiting deeper or custom integrations.
  • Reliance on third-party uptime
    Your product's integrations depend on Edlink's availability and performance, so any downtime or API changes on their end can directly affect your service to schools.
  • Niche and narrow use case
    Edlink is highly specialized for education integrations, so it is not useful outside that domain and may require additional tooling if your product expands beyond edtech connectivity needs.

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

Analysis of Edlink

Overall verdict

  • Edlink is a well-regarded API platform that simplifies integration with school Student Information Systems (SIS) and Learning Management Systems (LMS), making it a strong choice for edtech companies needing reliable, standardized education data connectivity.

Why this product is good

  • Provides a unified API that normalizes data across many different SIS and LMS platforms, reducing integration complexity
  • Supports OneRoster and other education data standards, easing compliance and interoperability
  • Offers real-time data syncing for rosters, grades, and other academic data
  • Well-documented developer tools and API references that speed up implementation
  • Handles authentication and secure data-sharing agreements with school districts, reducing legal and technical overhead
  • Actively maintained with growing support for additional SIS/LMS integrations

Recommended for

  • Edtech companies building products that need to connect with school Student Information Systems
  • Developers seeking to integrate rostering, grading, or attendance data into their platforms
  • Companies aiming to reduce time spent on individual SIS integrations by using a single unified API
  • Organizations needing OneRoster-compliant data exchange with K-12 school districts
  • Startups and enterprises scaling their education software across multiple districts with varying SIS platforms

Category Popularity

0-100% (relative to Edlink and Calcumber)
Education
100 100%
0% 0
Math Solver
0 0%
100% 100
APIs
100 100%
0% 0
Online Calculators
0 0%
100% 100

Questions & Answers

As answered by people managing Edlink and Calcumber.

What makes your product unique?

Edlink's answer

The Edlink Unified API (Edlink API Platform) that allows edtech companies to integrate with multiple learning management systems (LMS), student information systems (SIS). Our solution consolidates connections to systems like Google Classroom, Canvas, Schoology, and more into a single set of endpoints and models, making integration fast and easy.

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

Why should a person choose your product over its competitors?

Edlink's answer

Edlink’s clients choose them over competitors because they offer a level of support and tools that their competitors do not. Edlink provides professional guidance and expertise in building and deploying LMS & SIS integrations. We can share best practices, help troubleshoot issues, and provide guidance on how to build integrations that are scalable and reliable. Edlink provides tools for schools and developers to manage their integrations & data. These tools are for processes like filtering, transforming, and overriding data and can also facilitate school onboarding and troubleshooting. The Edlink Dashboard allows edtech companies to focus on building their core product rather than worrying about spending time building out internal tooling in order to scale their integrations.

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.

How would you describe the primary audience of your product?

Edlink's answer

The Edlink Unified API (Edlink API Platform) is for edtech companies.

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.

What's the story behind your product?

Edlink's answer

The mission at Edlink is to improve the quality of and access to education through the use of technology. -Building a broader picture of a student's education experience. -Making educational technology easier to use. -Building software people can rely on. Read more here: https://ed.link/community/mission/

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.

Which are the primary technologies used for building your product?

Edlink's answer

This question is not applicable.

Calcumber's answer:

HTML, CSS, TypeScript, PWA, CoolProp

Who are some of the biggest customers of your product?

Edlink's answer

-MagicSchool -Edmentum -ClassDojo -Inuit for Education -FenderPlay -Clever -Kognity -Kiddom

User comments

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What are some alternatives?

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

ClassLink - Class Link is a system provides educators with the capability to manage and scrutinize student’s performance, assessment and curriculum.

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

Clever - syncing between education applications for K-12 schools

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 .