Verified, then published.
Every answer is verified before it ever reaches a child — nothing unchecked, nothing rushed, no exceptions. If your child sees it here, you can trust it.
dear mum and dad,
meet MathQuest OS
it's the operating system that turns competition math into a quest we actually want to finish.
Registration for Singapore P3–P6 opens soon. Founding places are limited.
One-to-one training for Singapore's major primary math competitions. Every solution verified before your child sees it.
a real question, mid-quest
Quest · Fractions · 4 of 7
Ravi and Mei share some stickers. Ravi has 2/5 of the total. After Ravi gives Mei 12 stickers, Mei has three times as many as Ravi. How many stickers are there altogether?
I'm stuckCheck my answer
working pad
watch a real question get solved
Quest · Fractions · 4 of 7
Answer: 60
Before we check: in your bar model, which bar changed when Ravi gave away 12 — the before one, or the after one?
next nudge arrives after your try
type your answerTry again
MathQuest OS doesn't hand out worksheets. It watches how we think.
It knows which ideas we've locked in, and which ones are still wobbly.
And when we're stuck, it asks the one question that gets us unstuck.
everything you'd want. nothing you'd doubt.
Questions before answers.
When your child is stuck, they hear the question a champion would ask, at exactly the right moment. The full solution comes after an honest attempt, not instead of one.
Progress in plain language.
After each session you see what was mastered, what wobbled, and what comes next. No jargon, no vanity scores.
Nothing to doomscroll.
No ads. No feeds. No strangers. No selling of your family's data.
Name: blankLevel: P5Current quest: Fractions
welcome to your quest
Your map
masteredwobblynext
it knows exactly where we are
- Starts with a placement quest, not a scary test
- Builds a personal map of everything you've mastered
- Picks the next problem for you, not for the class average
- Circles back to an idea right before you'd forget it
- Moves you up only when mastery is real
Quest · Fractions · 4 of 7
Answer: 60
Before we check: in your bar model, which bar changed when Ravi gave away 12 — the before one, or the after one?
next nudge arrives after your try
type your answerTry again
problems that teach us back
- Problems with the depth and character of the real competitions
- A working pad for rough work, bar models, and diagrams
- Reads how you went wrong, not only that you did
- Hints arrive one nudge at a time
- Full worked solutions, after you've had your shot
Session report · Tuesday
A solid 24 minutes.
MasteredFractions of a remainderWobblyUnits before and after a transferNextTwo more transfer problems, then speed
Before the next paper: practise drawing the "after" bar first.
a coach in our corner
- Explains an idea three different ways until one lands
- Talks like a coach, not a textbook
- Cares about the method, not only the final answer
- Sends mum and dad a plain-language report after each session
- Flags exactly what to practise before the next paper
and there's more in the bag
- timed sprints for exam pace
- past-paper practice mode
- a collection of mastery bricks to earn
- print-and-solve sheets for offline practice
- works on tablet and laptop
- progress you can show grandma
we know the no-list matters to you.
- no unverified answers.
- no recycled worksheets.
- no answer-first shortcuts.
- no leaderboard anxiety.
- no ads.
- no data selling.
- no guessing about your child's progress.
the bar we build to
$200-an-hour teaching. a $20 promise.
The best education has always come from one-to-one tutoring — rigorous, prestigious, innovative, and nurturing. Aristotle taught Alexander. A devoted tutor learns a child's mind over the years and teaches what cannot be drilled: thinking, reasoning, judgment. That privilege has always belonged to the few.
Y Combinator, the world's most influential startup accelerator, calls this “The Primer” — after the book in Neal Stephenson's The Diamond Age that adapts entirely to one child and grows with her for years — and has openly asked founders to build tutoring “at the quality of a devoted private tutor and at consumer scale”.
MathQuest OS is our answer for competition math: one-to-one, mastery-based olympiad training that holds the standard of two-hundred-dollar-an-hour tuition, at closer to twenty dollars a day.
read the requestwatch the film
MathQuest OS is an independent company and is not affiliated with, funded by, or endorsed by Y Combinator. Founding-cohort pricing will be confirmed at registration.
Training for Singapore's major primary competitions: SMOPSAPMOPSNMOSRIPMWCRMO
Competition names are the marks of their respective organisers. MathQuest OS is not affiliated with or endorsed by any competition organiser or school.
our collection. our proof.
Every idea mastered becomes a brick in your collection. The collection is the record no worksheet can give you.
what you earn stays secret until you earn it
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hold a founding place
Registration for Singapore P3–P6 students opens soon. We are starting with a small founding cohort so every child gets a properly calibrated start. Leave your details and we will write to you first, with founding pricing, before public registration opens.
questions you might have
A training app for competition math. It learns what you know, chooses what you should try next, coaches you through it, and keeps an honest record of what you've mastered.
The workshop desk with printed past papers Pencil marginalia on a competition paper A stack of solved papers with sticky notes A bar model sketched in the margin