Software Alternatives, Accelerators & Startups

openSAP VS Calcumber

Compare openSAP VS Calcumber and see what are their differences

openSAP logo openSAP

openSAP is an app offered by HPI Knowledge Engineering Team that helps you to maximize your knowledge in critical topics for success in the SAP ( system applications and products) through your smartphones.

Calcumber logo Calcumber

Calculate in a notebook and share — from everyday math to engineering.
Visit Website
  • openSAP Landing page
    Landing page //
    2023-08-18
  • 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.

Calcumber

$ 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

openSAP features and specs

  • Free Access
    openSAP provides free access to a wide range of courses, making it accessible to anyone interested in learning about SAP technologies and practices without financial barriers.
  • High-Quality Content
    Courses are developed by SAP experts and often include the latest information on SAP technologies, ensuring learners receive up-to-date and professionally-curated material.
  • Flexibility
    Learners can access course materials at any time and complete them at their own pace, allowing them to balance learning with other commitments.
  • Certification of Completion
    Upon successfully finishing a course, participants can earn a certificate of completion, which can be a valuable addition to a professional's credentials.
  • Interactive Learning
    Courses often include interactive elements such as quizzes, peer assessment, and discussions that enhance engagement and help reinforce learning.

Possible disadvantages of openSAP

  • Limited to SAP Focus
    Courses primarily focus on SAP products and services, which may limit their applicability for those looking to study broader topics in technology or business.
  • Self-Directed Learning
    The platform requires learners to be self-motivated and disciplined, as there is no set schedule or in-person guidance to keep learners on track.
  • Limited Networking Opportunities
    While the platform supports discussion forums, the lack of in-person interaction can limit networking opportunities with peers and instructors.
  • Prerequisite Knowledge
    Some courses may require prior knowledge of SAP systems or related technologies, which could be a barrier for beginners without that background.
  • Variable Course Availability
    Not all courses are available at all times; some are offered periodically, which means learners might have to wait for specific courses to be available.

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

openSAP videos

openSAP Course: Guide Your SAP S/4HANA Project to Success - Teaser Video

More videos:

  • Review - Introducing SAP Fieldglass Assignment Management: openSAP Course

Calcumber videos

No Calcumber videos yet. You could help us improve this page by suggesting one.

Add video

Category Popularity

0-100% (relative to openSAP and Calcumber)
Education
100 100%
0% 0
Math Solver
0 0%
100% 100
Exam Questions
100 100%
0% 0
Online Calculators
0 0%
100% 100

Questions & Answers

As answered by people managing openSAP 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?

User comments

Share your experience with using openSAP and Calcumber. For example, how are they different and which one is better?
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Social recommendations and mentions

Based on our record, openSAP seems to be more popular. It has been mentiond 22 times 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.

openSAP mentions (22)

  • I’m about to join SAP Consulting company as a marketer and I have no SAP knowledge. How do I learn?
    In general, reputable, free and official learning resources are: Learning.sap.com Open.sap.com Community.sap.com. Source: over 3 years ago
  • LPT: what are some free skills to learn during free time that will help you find better opportunities for job?
    If you want to enter the corporate world, openSAP has a bunch of MOOCs surrounding ERP, HR, Software Design and Databases. Always looks good on a CV, and teaches you also a bit about how large corporations work. Source: over 3 years ago
  • FREE ACCREDITED EDUCATION, SOME FAST/SOME LONG - ALL GREAT!
    OpenSAPopenSAP is SAP's free learning platform for everyone interested in learning about SAP's latest innovations and how to survive in the digital economy.LinkUnknown. Source: over 3 years ago
  • I don’t know what I’m doing… Help!
    Open.sap.com and https://learning.sap.com/learning-journey for free stuff. Source: over 3 years ago
  • S4HANA at Brandenburg Uni
    Do you know https://open.sap.com/ ? That's a good starting point if you're eager to go down the SAP rabbit hole. And the it's free. Source: over 3 years ago
View more

Calcumber mentions (0)

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

What are some alternatives?

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

Exam Guru - Exam Guru is an app designed for the IT professional and students to prepare their certification exams right on their smartphones.

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

Algorithms & Data Structures - Algorithms & Data Structures is one of the best mobile apps offered by Alexander Murphy that provides a variety of resources for the programmers and math students to helps them in learning more about data structure as well as algorithms right from t…

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 .

Azure AZ-103 - Azure AZ-103 is one of the best mobile apps introduced by Naveen Karamchetti that enables IT Professionals to manage Azure resources and subscriptions to configure cost quotas and subscription policies directly through their mobile phones.

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