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Timed challenges, races and duels that hook you, at home or with the whole class. And when it's time to go further, primary and secondary theory with an AI tutor that explains every mistake.
No card, no required email. An account only adds extras.
Try it right now
7 × 8
3 in a row unlocks the full challenge
Project a challenge on the whiteboard, create your class in a minute and follow each student's progress. Free for teachers and ad-free.
Full-speed mental math: classic, countdown, survival and daily challenge.
StartA mental maths adventure: plan your path by calculating. 4 worlds, one strategy in each.
StartEvery correct answer moves you forward. Pick your rival: turtle, hare or cheetah.
StartPractice tables 1 to 12 with adapted levels.
StartFace another player in real time. Who calculates faster?
StartCreate a private room and compete with your class or friends at once.
StartPick topics and time, then review your mistakes with the full explanation.
StartTheory with animated diagrams, solved examples and a mini-quiz with confetti.
StartFrom year 5 to grade 10: only the topics you cover this year.
Start14 categories: fractions, algebra, trigonometry, logarithms and more.
StartReal-life situations with smart hints when you get stuck.
StartStep-by-step solutions to understand every operation.
StartPoints, streaks, achievements and levels saved on every device.
StartVisual theory with animated diagrams, solved examples and the classic mistake of each topic.
Mati
Your math tutor
1/2 + 1/4 = 2/6 ... is that right?
You added the denominators: 1/2 + 1/4 is not 2/6. Pieces must match before adding: 2/4 + 1/4 = 3/4.
So how do I do it then?
Turn 1/2 into quarters: how many quarters make half a bar? Try it yourself and I'll check.
When you get something wrong, the AI analyses your specific answer and tells you what happened and how to think about it. It never hands you the solution: it guides you until you get there.
Timed express revision with the exact topics of your exam and mistake review.
340,000+
activities recorded on the platform
220,000+
exercises answered on the platform
4/5
average rating after playing (500+ reviews)
Real platform data, updated daily.
Pick who you are and try the key pieces, exactly as they are in MatesRetos.
6 × 7
Short games against the clock that adjust the pace to each student. Get one wrong and you see the corrected sum right away.
Try it freeFractions
Real progress tracking, without hovering over their shoulder.
Weekly AI reports, goals and a supervised mode for little ones.
Groups, assigned exams and progress tracking for your students.
Yes. Playing, practising and the teacher dashboard are free and have no ads. Schools can get an optional licence that adds school management. If paid features ever come, we'll announce it in advance.
Not to start: the Challenge, Mati's Adventures, word problems and lessons work without an account. A free account saves your progress and unlocks duels, multiplayer, all of Mati's help and the full lessons.
No. Mati gives step-by-step hints: first one and, if needed, a more specific one, without giving the finished solution. It only talks about the exercise in front of you: there's no open chat.
Yes, on phones, tablets and computers, in the browser. You can also install it as an app from the browser itself.
MatesRetos started as a family project to practice math at home. It worked so well that more and more families, students and teachers began using it. The idea is still the same: mastering math with less frustration and more joy — visual learning, practice that hooks you, and an AI tutor that never hands you the answer.