Math, finally mastered
A clear method: understand the theory, practice with intelligent feedback and walk into the exam with no surprises. The AI explains every mistake like a good teacher would.
No card, no required email. An account only adds extras.
Try it right now
7 × 8
3 in a row unlocks the full challenge
What do you want to do today?
Challenge mode
Full-speed mental math: classic, countdown, survival and daily challenge.
StartRace against the AI
Every correct answer moves you forward. Pick your rival: turtle, hare or cheetah.
StartTimes tables
Practice tables 1 to 12 with adapted levels.
StartI have an exam soon
Pick topics and time, then review your mistakes with the full explanation.
StartLearn step by step
Theory with animated diagrams, solved examples and a mini-quiz with confetti.
StartBy your school year
From year 5 to grade 10: only the topics you cover this year.
StartSecondary practice
14 categories: fractions, algebra, trigonometry, logarithms and more.
StartStory problems
Real-life situations with smart hints when you get stuck.
Start1 vs 1 duel
Face another player in real time. Who calculates faster?
StartEducational calculator
Step-by-step solutions to understand every operation.
StartRooms with friends
Create a private room and compete with your class or friends at once.
StartYour progress in the cloud
Points, streaks, achievements and levels saved on every device.
StartUnderstand
Visual 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.
An AI tutor that explains your mistake, not the answer
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.
- Safe for kids: no open chat, maths only
- Explains the why behind every mistake, in your language
- Gradual hints: it never gives away the solution
Prove it
Timed express revision with the exact topics of your exam and mistake review.
340,000+
activities recorded on the platform
220,000+
exercises solved by students
4/5
average rating after playing (500+ reviews)
Real platform data, updated daily.
This is what it looks like inside
Real product screenshots, exactly as your child or your class will see it. No mockups.
Learn step by step
Every topic with visual theory, a worked example and the typical mistake
On your phone, anywhere
Works on any device, even offline
Your year, your topics
From year 5 to grade 10, only what you're covering this year
Challenge against the clock
Pick your level and operations, and train mental maths by playing
Duel Arena
Real-time 1v1 duels with ELO points, ranks and a global leaderboard
Times tables
From 1 to 12 with three levels: no rush, timed or against the clock
Multiplayer rooms
Create a private room and challenge your friends or the whole class
Problems mode, your way
Choose operations and difficulty, with AI hints and explanations
The full syllabus, from year 5 to grade 10
Covered topics
- Mental math
- Times tables
- Fractions
- Decimals
- Measurement & units
- Geometry
Fractions
For families and teachers
Real progress tracking, without hovering over their shoulder.
I'm a parent
Weekly AI reports, goals and a supervised mode for little ones.
I'm a teacher
Groups, assigned exams and progress tracking for your students.
No sign-up, right now
- All game modes: Challenge, duels, race and problems
- All the theory, school years and express exam revision
- Hints and AI explanations of your mistakes
- Your lesson progress saved on this device
With a free account, you also get
- Progress, achievements and levels synced across all your devices
- Private multiplayer rooms with friends or your class
- Teacher panel: groups, assigned exams and statistics
- Family panel: weekly AI reports and goals for your kids
Frequently asked questions
Is MatesRetos free?+
You can use MatesRetos for free today, and we want a free version to always exist. That said, running the project has costs (servers, AI…), so we may add some paid features in the future to keep it sustainable. If that happens, we'll be fully transparent about it.
Do I need to register to use MatesRetos?+
No, you don't need to register: you can start playing immediately. If you want to save your progress in the cloud and access it from different devices, you can create an optional account.
Does the AI give my child the answers?+
No. The AI tutor never hands over the solution: it analyses the specific mistake, explains the why and gives gradual hints so the student gets there on their own. There is also no open chat: the AI only talks about maths, inside each exercise.
Can I use MatesRetos on my phone or tablet?+
Of course! MatesRetos is fully optimized for phones, tablets and computers. It works on any modern browser and you can even install it as an app on your device.
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.