➗ Math apps and platforms · 🎮 Learning games and sites · 🏫 Classroom tools
99math
By 99math (Estonia). Visit 99math
Desk research from the maker's own pages. Not yet tried by us. Checked 2026-10-24.
A math-facts game from Estonia built for live class rounds, like a quiz show. The teacher picks skills from 731 K-8 topics, puts a code on the board, and the whole class answers the same problems in a five-minute race, with a leaderboard and a report on each child's accuracy and speed. Kids can also practice alone at home, clearing levels and raising pets, and parents can link an account.
Our take: A low-effort, free way for teachers to make fact practice lively; parents of kids who dislike timed competition may want a calmer tool.
| Ages it suits | about 5-14 (grades K-8) |
|---|---|
| What its terms say about age | Not stated as a minimum age for student accounts. Parent and teacher accounts must be 18 or older; student accounts may be linked to a parent or teacher, and teachers who create them consent for the school under COPPA. (terms) |
| Price | Free, with paid extras. Free for teachers, schools and students (Oct 2026). An optional Premium account (weekly, monthly or lifetime) unlocks special content, and the terms also allow separate in-app purchases; prices were not shown on the pages we loaded. |
| Works on | Web |
| Account | The child's own account |
| Ads | None |
| In-app purchases | Yes |
| The AI in it | No AI for students found; the privacy policy mentions AI service providers but says they may not train on its data. |
What's good
- Free for whole classes, set up in minutes
- Very little personal data collected
- Clear reports on each child's weak facts
- No third-party ads
Watch for
- Public leaderboards and speed races can upset slower kids
- Premium and in-app purchases exist for home players
- Focuses on facts and speed, not deep problem solving
Data and privacy
A student account needs only a first name, last initial and password. 99math says it shows no third-party ads, does not sell student data, does not use personal data to train AI, and bars its AI providers from training on it; data is stored in the US. Read the privacy policy.
Does it work?
No studies found; the maker shares teacher quotes and usage counts.
In the Big Index
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Arcademics
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Where these facts come from
- https://www.99math.com/
- https://parents.99math.com/
- https://legal.99math.com/terms-of-use
- https://legal.99math.com/privacy-policy
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.