Adaptive MCAT prep, calibrated to your weak areas.

Unlimited original AAMC-style practice questions. Per-concept Bayesian mastery tracking. Every question targets the area where your next hour gains the most ground.

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How it works

Three things behind every session.

Adaptive selection
Thompson sampling over a Beta-Bernoulli mastery posterior. The next concept is chosen to maximize information gain — not a fixed bank, not random.
Original questions
Every stem is generated fresh and run through a three-layer originality firewall (hash blocklist, per-user uniqueness, embedding similarity). Zero overlap with copyrighted prep banks.
Honest mastery tracking
Difficulty-weighted Bayesian updates with recency decay. The gap map shows what you actually need to drill — and the uncertainty bars show when it’s still a guess.

Three ways to use it

Pick what fits your situation. You can switch any time.

BYOK — bring your own key
Already have an Anthropic / OpenAI / xAI / Google API key. We use yours; cost goes to your provider account. Free to start, no platform fee.
Start with BYOK
Hosted PAYG
We manage the keys. You pay for the tokens you use plus a small platform margin. Hard cap by default ($20/mo) so you never get surprised.
Pick Hosted PAYG
Lifetime — $249 one-time
Unlimited generations for the life of the platform. We absorb the LLM cost. Best value if you’re committed to the full prep cycle.
Buy Lifetime

What we don’t do

The privacy-first defaults are also our hard rules.

  • 01No question reuse from copyrighted banks. Every generated stem passes a hash + embedding similarity check against a blocklist before it lands in your session.
  • 02No third-party tracking on authenticated routes. No Facebook Pixel, Google Analytics, Hotjar, or anything similar. Only essential cookies (session + CSRF).
  • 03No training on your data. Your prompts, answers, uploads, and mastery posteriors stay on your account. Future-opt-in toggle exists in Settings — current code always treats it as off.
  • 04No AAMC content in our prompts or storage. Concept tags reference the public AAMC outline only; no paid practice material is stored, reproduced, or trained on.