
Brilliant.org
EloMath
Khan Academy
Numberthon
Project Euler
LeetCode
mathigon
Practice olympiad-style math problems and compete against other users.

Airtable
mlsql
SQL Chat
Fieldbook
sqlTranslate
Outerbase
TablePlus
Communicate with databases like a human

Which is more popular?
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | calcora.net | friendlydata.io |
| Pricing | — | |
| Platforms | — | |
| Company | Startup from Switzerland · 1 - 9 employees · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Calcora is a free platform for practicing math problems of all difficulty levels. Solve problems, maintain your streak, and compete with friends on the leaderboard. The Rules No Calculator. Solve every problem by hand. Mental math and working on paper are part of the challenge. No AI Assistance....
No description of FriendlyData yet.
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


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


Share your experience with using Calcora.net and FriendlyData. For example, how are they different and which one is better?
When comparing Calcora.net and FriendlyData, you can also consider the following products.

Brilliant - Understand concepts and build your problem solving skills with thousands of free problems and examples in math, science, and engineering.
Compare Brilliant.org to Calcora.net or FriendlyData:

Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.
Compare Airtable to Calcora.net or FriendlyData:

Improve math skills with ranked practice, Elo-style ratings, topic lessons, timed challenges, progress stats, rewards, and a global leaderboard.
Compare EloMath to Calcora.net or FriendlyData:

Infer SQL queries from plain-text questions and table headers.
Compare mlsql to Calcora.net or FriendlyData:

Khan Academy offers online tools to help students learn about a variety of important school subjects. Tools include videos, practice exercises, and materials for instructors. Read more about Khan Academy.
Compare Khan Academy to Calcora.net or FriendlyData:

Chat-based SQL Client and Editor for the next decade
Compare SQL Chat to Calcora.net or FriendlyData: