Not a quiz tool. A full study system built around the science of learning.
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Exam-level questions. Exam-level feedback.
Paste any notes and Crucible generates the kind of questions your teacher would actually set — long answer, MCQ, or mixed, at Easy, Medium, or Hard. Your answers are marked by AI on genuine understanding, not keyword matching. You get specific, honest feedback on exactly where your knowledge falls short.
Long answerMCQHard modeExam mode
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Gamification that actually makes you want to study
XP, levels, streaks, Ingots, a Forge that earns currency passively, daily challenges, a shop full of boosts and cosmetics, prestige resets, friends leaderboards. Every mechanic is designed to give your brain a real reason to show up tomorrow — not just a fake dopamine hit.
XP & levelsStreaksForgePrestige
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Full history & weak topic tracking
Every session is saved. See your scores over time, spot the topics you consistently get wrong, and retry past sessions to close gaps before your exam. The longer you use Crucible, the clearer the picture of exactly what you do and don't know.
Session historyWeak topicsRetry
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Built for speed — from notes to questions in seconds
No setup. No course creation. No flashcard decks to maintain. Paste your notes — or drop in a PDF or Word doc — and you're quizzing yourself in under ten seconds. Crucible works on whatever material you already have, the moment you have it.
InstantPDF & DOCXAny subject
AI-powered marking
Exam-level questions. Exam-level feedback.
Not keyword matching. Not multiple choice ticks. Real understanding, evaluated by AI.
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Questions from your exact material
Paste any notes — lecture slides, textbook summaries, your own scribbles — and Crucible generates targeted exam questions from that exact content. Long answer, MCQ, mixed, at Easy, Medium, or Hard.
Any subject, any level, any format
PDF, Word doc, or plain text
Hard mode gives an XP bonus multiplier
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Marking that understands what you mean
Claude evaluates your long-answer responses on genuine comprehension — not whether you used the right words. Explain something correctly in your own words and you'll get the marks. Misunderstand something and you'll get told exactly why.
Understands paraphrasing and context
Catches misconceptions other tools miss
MCQ scored instantly server-side
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Specific feedback, not just a score
Every marked answer comes with written feedback on what you got right, what you missed, and what to review. It's the difference between knowing your score and knowing how to improve it before your exam.
Per-question feedback on every session
Weak topics tracked across sessions
Retry old sessions to close the gaps
Gamification
A progression system built around real study habits
Every mechanic has a purpose. Here's how they all connect.
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XP, Levels & The Forge
Every session earns XP based on your score and difficulty — level up through 200 tiers to unlock new forge upgrades and shop items. Your Forge runs 24/7, passively producing Ingots even when you're not studying, with a burst bonus whenever you do.
Score higher and play on Hard for bonus XP multipliers
16 forge tiers from Stone to Eternal — rates from 10/hr to 3,500/hr
Prestige resets your level but keeps a permanent XP multiplier
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Streaks, Shields & Daily Challenges
Build a daily study streak with milestone bonuses at 3, 7, 14, 30, 50, and 100 days. Miss a day? Streak shields absorb it automatically. Three daily challenges refresh every midnight — complete all three for a bonus Ingot payout on top.
Shields auto-activate so you never lose a streak unfairly
Challenges nudge you toward harder sessions and longer study
Bonus +2,000 Ingots for hitting all three in a day
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Ingots, The Shop & Cosmetics
Spend Ingots on XP boosts, Ingot multipliers, streak shields, and cosmetic themes that reskin the entire app. Stack a 2x XP boost with a 2x Ingot boost before a big session and watch your progression accelerate.
Boosts from 2x up to 5x XP or Ingots for a limited time
Friends leaderboard — compete on XP, level, and streak
Any subject, any level. Paste text directly, or upload a .txt, .pdf, or Word (.docx) file. Crucible works best with lecture notes, textbook summaries, and study guides — basically anything you'd normally highlight.
Crucible uses Claude (Anthropic's AI) to evaluate your answer against the actual concepts in your notes. It understands when you've explained something correctly in your own words, catches misconceptions, and gives specific feedback on what to improve — not just a tick or cross.
The Forge passively produces Ingots (the in-app currency) over time — faster while you study. Ingots buy boosts, streak shields, and cosmetic themes. It's a light idle-game layer that gives you a reason to keep your streak alive even on days you can't do a full session.
Yes, any time. No questions asked, no weird cancellation flows. Your data stays in your account on the free tier after you cancel.
Your notes are sent to the AI model to generate questions and are not stored beyond your session. Your progress (XP, level, history) is saved to your account so you can pick up where you left off across devices.
Yes — free forever, no card required. You get up to 10 questions per session, forge progression, streaks, and daily challenges. Upgrading to Pro or Max unlocks more questions, exam mode, and full forge progression.
Pro gives you 30 questions per session, all question types, exam mode, and full forge progression — everything most students need. Max goes further with 75 questions per session, priority AI, early feature access, extended analytics, and exclusive cosmetics.
Crucible is live — notes in, questions out, XP earned
Paste your notes, get AI-generated exam questions, answer them, get marked on genuine understanding — and earn XP, Ingots, and forge progress for showing up. Here's everything in v1.