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Get paired with a rival at your level. Face off in live, AI-moderated quiz battles. Track wins, streaks, and rise on the leaderboard.

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Live Battle 00:45
You avatar You
VS
Rival avatar Rival_23

Which theorem explains path independence of conservative fields?

Score12
Streak+3
Accuracy89%
Matchmaking

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Skill-Matched Rivals

Fair pairings that keep you challenged and motivated.

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Live AI Moderation

Instant question delivery, anti-stall rules, and adjudication.

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Adaptive Scoring

Points shift by difficulty, speed, and streaks.

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Seasonal Leaderboards

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Ember AI

Smart hints, adaptive difficulty, and targeted reviews. Ember AI learns your strengths and closes gaps with personalized drills—no fluff, just progress.

  • Adaptive question routing
  • Instant explanations & weak-topic focus
  • Smart re-tests and spaced recall
Unlock Ember AI How it works
Focus
Magnetic flux
Ember AI recommends short bursts on flux linkage to strengthen fundamentals before moving to Lenz's Law.
Competitive/Online uses Official C² pools only and is protected by Ember Anti-Cheat
Security

Play fair with Ember Anti-Cheat

All competitive matches are protected. Real-time detection and integrity checks keep the ladder legit.

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Live integrity checks

Background verification during queue & match to prevent foul play.

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Detection & actions

Automated flags + manual review. Accounts may be limited or banned for violations.

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Audit trails

Server-side timing & input patterns help adjudicate disputes quickly.

Create

Upload study docs → instant custom quizzes

Turn notes, slides, or PDFs into high-quality quizzes. Use them in Practice or Private matches.

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Drag & drop your file here PDF, DOCX, PPTX, or text
Note: Competitive/Online uses Official C² quiz pools only (protected by Ember Anti-Cheat).
Pricing

Choose your plan

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Starter

$0/forever
  • Standard Ember AI analysis
  • 3 document-to-quiz generations / month
  • Basic performance stats
  • Save up to 3 custom decks
  • Normal matchmaking queue
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Pro

Elite

$4.99/mo
  • Ember AI+ (faster, deeper analysis)
  • Unlimited document-to-quiz generations
  • Advanced analytics & weak-topic insights
  • Priority matchmaking queue
  • Streak protection & streak multipliers
  • Early access to new game modes
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Schools & Teams

Custom

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  • Unlimited members
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Pick Subject

Choose AP Physics, Chem, Calc, Bio, or custom decks.

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Get Paired

AI finds a rival with a similar rating and topic mastery.

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Battle & Climb

Compete in timed rounds, earn points, and move up tiers.

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