📝 Study and homework tools · ➗ Math apps and platforms
Math is Fun
By Rod Pierce (MathsIsFun.com). Visit Math is Fun
Desk research from the maker's own pages. Not yet tried by us. Checked 2026-10-24.
A long-running free math reference site, started in 2000 and kept up by Rod Pierce with a small team. It explains topics from counting to calculus in plain words with interactive diagrams, plus puzzles, games, worksheets, a math dictionary and practice questions. A child looks up a topic, reads a short illustrated page, then tries the questions or a related game. There is also a public discussion forum on a separate site.
Our take: A dependable free math reference for looking things up at home; a child who needs a structured course or tutoring will want more.
Checked in a browser
A browser check on 2026-10-25: what loads, the ads and trackers we saw, and what a child meets first. Not a hands-on test.
| Child safety: 2 out of 5 | Google AdSense programmatic ads loaded (2 ad frames) and a 'Discover more' ad search box sat in the page, so ads not chosen for children are possible; there are also links to a forum and social sites. |
|---|---|
| Data: 2 out of 5 | Google's ad network (doubleclick, googlesyndication) loaded before the cookie notice was answered and set a doubleclick cookie. |
| Ease: 3 out of 5 | Lots of small text links and boxes; usable for an older child, cluttered for a young one. |
| Cost honesty: 5 out of 5 | Free to use; only a Login link was seen, no upgrade prompt. |
What we found
- Contacted 6 outside sites; 2 were Google ad networks (doubleclick.net, googlesyndication.com).
- 2 Google ad frames loaded, plus a 'Discover more' sponsored search panel at the bottom of the screen.
- Set 6 cookies, one from doubleclick.net, before the 'We may use Cookies OK' notice was answered.
- Links out to the Math is Fun Forum, Facebook, WhatsApp and X.
From the test: A huge free math reference, but it carries Google ads, so younger children are better off with a grown-up nearby.
| Ages it suits | about 6-18 (K-12) |
|---|---|
| What its terms say about age | Not stated: the site has no terms of use page. The privacy statement lets parents of under-18s review or delete progress data tied to a username. (terms) |
| Price | Free. Free; paid for by ads, with no subscriptions (Oct 2026). Ads can be hidden for 36 hours at a time. |
| Works on | Web |
| Account | No account needed |
| Ads | Yes |
| In-app purchases | None |
| The AI in it | No AI. |
What's good
- Huge free library of clear, illustrated explanations
- No account needed; optional login needs only a username
- Ads marked child-directed, no personal data collected
- Goes all the way from early math to calculus
Watch for
- Shows ads
- No terms of use page
- Linked public forum is a separate site with open posting
- Reference style: little guided path or feedback
Data and privacy
Says it collects no personal data; an optional login asks only for a username to save question progress. Ads are tagged child-directed, which the site says means no tracking or personal data is used for them. Read the privacy policy.
Does it work?
No independent study found; the maker's own claims only (it aims to cover the K-12 curriculum and lists qualified contributors).
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Where these facts come from
- https://www.mathsisfun.com/
- https://www.mathsisfun.com/about-privacy.html
- https://www.mathsisfun.com/about-ads.html
- https://www.mathsisfun.com/aboutmathsisfun.html
Prices, terms and features change. Nobody paid to be listed, nothing here is an affiliate link, and Peabody never rates itself. Where we and the maker disagree, the maker's own pages are the ones to trust.