● Free · 1,000 questions · No signup required

Learn biostatistics by
solving real clinical cases.

A gamified trainer for medical students, residents, and researchers. Spaced repetition, XP, 30+ case scenarios drawn from real biomedical research.

Works in-browser. Your progress saves automatically.

1,000
Questions
30+
Clinical cases
8
Domains
42
Method deep-dives
How it works

Built for how people actually learn

Not another passive video course — active recall, spaced repetition, and context-rich cases.

🧠

Spaced repetition

Questions you miss come back when you're about to forget them. Built on the SM-2 algorithm used by Anki.

🏥

Real case scenarios

Each case has a clinical story — critique a manuscript, advise a resident, design an RCT. Questions live in context.

📖

Deep dives, not just answers

Every question links to intuition, formula, assumptions, pitfalls, and suggested reading. Learn the why.

XP, streaks, achievements

Gentle gamification that rewards consistency. Daily streak bonus, perfect-run badges, hard-mode multipliers.

🎯

Progress tracking

See your accuracy by domain. Spot weak topics. Sign in (optional) to sync progress across devices.

🆓

Free, forever

Everything unlocked. No ads. No dark patterns. Built by a researcher who wishes this existed in grad school.

The curriculum

Eight domains, from fundamentals to advanced

🧮
Foundations
Variable types, central tendency, spread, visualization
🎲
Probability
Distributions, Bayes' rule, expected value, CLT
📏
Estimation & Inference
CIs, hypothesis tests, effect sizes, power
📈
Regression
Linear, logistic, survival, mixed, GLMs, splines
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Design & Bias
RCTs, observational designs, selection bias
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Missing & Measurement
MI, Bland-Altman, ICC, reliability, MCID
🎯
Causal Inference
Propensity, IPTW, mediation, IV, target trial
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Advanced & Bayesian
MCMC, hierarchical models, meta-analysis
Built for you

Who is this for?

🎓

Medical students & residents

Master the biostats you'll see in boards, journal club, and your first publication.

🔬

Early-career researchers

Shore up methodology before designing your next study or reviewing a manuscript.

📚

Instructors

Assign cases as homework. Point students at deep-dives when they stumble in class.

🚀

Ready to level up?

Jump in — no account needed. Works in any modern browser.

Start your first case →

Optional sign-in syncs your XP across devices.