
Numara Calculator
SpeedCrunch
Qalculate!
Numi App
Soulver
Numby
Engineering Equation Solver
Calculate in a notebook and share — from everyday math to engineering.

Developer documentation that anyone can edit

Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | calcumber.app | opendevdocs.com |
| Pricing | — | |
| Platforms | — | |
| Company | Startup from Switzerland · 1 - 9 employees · 2025 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


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.
No description of Open Devdocs yet.
What each product offers, as listed by its team.


No features have been listed yet.
An editorial look at what each product does well and who it suits.


No analysis of Calcumber yet.
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Calcumber and Open Devdocs.
Calcumber's answer
Calcumber's answer
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.
Calcumber's answer
Calcumber's answer
HTML, CSS, TypeScript, PWA, CoolProp
Calcumber's answer
Share your experience with using Calcumber and Open Devdocs. For example, how are they different and which one is better?
When comparing Calcumber and Open Devdocs, you can also consider the following products.

A simple but powerful notepad calculator which evaluates expressions as you type.
Compare Numara Calculator to Calcumber or Open Devdocs:

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 .
Compare SpeedCrunch to Calcumber or Open Devdocs:

Qalculate! is a multiplatform multi-purpose desktop calculator.
Compare Qalculate! to Calcumber or Open Devdocs:

Numi is a beautiful text calculator for Mac.
Compare Numi App to Calcumber or Open Devdocs:

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.
Compare Soulver to Calcumber or Open Devdocs:

A natural language calculator for your terminal and macOS
Compare Numby to Calcumber or Open Devdocs: