YALEXAdaptive math · built for contest students
Solve.Prove.Excel.← we'll get you here
Yalex finds where your understanding breaks, then rebuilds it problem by problem.
Free in beta · 20-minute placement · no card
Placement · Q3/5
A sequence begins 2, 6, 12, 20, … What is its 100th term?
10100✓ checkedNext question's climbing toward your edge.
Warm-up · live from the problem bank
Try one. Right now.
A real problem from the Yalex bank, rotated every hour. No account, no timer.
Problem · let's diagnose this
Studying hard isn't the same as studying where it counts.
You've done the all-nighters. Rewatched the videos. Then the contest starts and question three doesn't look like anything you practiced.
Re-reading notes. Feels productive, changes nothing.
Random problem sets. Ninety percent too easy, ten percent soul-crushing.
YouTube marathons. Watching math isn't doing math.
Solution · our fix
Work at your edge. Not below it. Not in the panic zone.
Adaptive placement pinpoints your level. Every problem lands where growth actually happens.
Find your level
Five questions pin your starting point. No placement anxiety, no prep needed.
Practice your edge
Problems tuned to where growth actually happens. Not too easy, not soul-crushing.
Prove it
Cat tests bank each module. Pass to advance. The next level is earned.
No feed. No fluff. Just the shortest path between you and the next level — and proof when you get there.
Your dashboard · the toolkit
Everything tuned to one goal: contest readiness.
Four systems. They only do math.
- 01
Adaptive placement
Five questions, twenty minutes, one honest starting point. The engine narrows fast.
- 02
Edge engine
20 foundational and 30 advanced per module. Difficulty tuned after every answer.
- 03
Proof gates
Finish a module, take the cat test. Pass it and move on.
- 04
Your dashboard
Track your results, all in one place.
- 05
Forum and Community
Need help? Our community can help.
Mastery map · sample
- A = Algebra
- B = Geometry
- C = Number Theory
- D = Combinatorics
- E = Analysis
Weak spots get flagged before the contest finds them.
FAQs · frequently asked
Fair questions.
Q1Is Yalex free?
Yes — free while in beta. No card, ever so far.
Q2How is this different from Khan Academy or YouTube?
Those are content libraries. Yalex picks for you, targets the exact concept you're missing, and makes you prove it before moving on.
Q3What do levels 101–600 mean?
Our ladder: Forming, Building, Lifting, Orbiting, Accelerating, Departure. 101–301 are live now. 401+ aim at Euclid and COMC.
Q4What's a cat test?
A short assessment for one module's category. Pass it and the module is banked.
Q5Do I need an account to try it?
No. The placement runs anonymously. You only create an account when you want your progress saved.
Q6I'm prepping for Euclid or the COMC. Worth it?
That's what the upper levels are built for: proof-heavy problems and feedback on written work.
That's it
Stop studying blind.
Run the free placement. Twenty minutes. You'll know exactly what to fix.
Free in beta · No card · 20 minutes