Red Pen Prep is MCAT practice that shows its work: for every answer, the sentence, the table cell or the principle that decides it, and the name of the trap behind every wrong choice.
Works in your browser on a phone or a laptop. Your license key arrives by email the moment you pay.
14-day full refund if it isn't helping you.
One trap from each section of the MCAT. These four come from the Trap Bank, like many of the traps in our videos.
Ten traps are free in the Trap Bank. The Pass opens all 155.
| Part | Count |
|---|---|
| CARS course complete | |
| Practice passagesWorked one at a time, with the full correction after every question. | 91 |
| Timed section in the real format9 passages, 53 questions, 90 minutes, with flags, review and a walkthrough. | 1 |
| CARS questionsEach proved by the sentence that decides it, with every choice explained. | 599 |
| Transfer problemsTwo after each practice passage: one right away, one 48 hours later. | 182 |
| Named CARS traps"My traps" shows the ones that catch you, with the questions they caught you on. | 21 |
| Bio/Biochem growing | |
| Data passagesResearch passages, each with its table and five questions. The red pen marks the sentence, the cells or the principle. | 24 |
| Discrete question setsFive questions each, every one settled by a named principle. | 12 |
| Bio/Biochem questionsThe 24 passages and the 12 sets together. | 180 |
| Chem/Phys new | |
| Data passagesExperiments with their tables: titrations, cells, kinetics, spectroscopy, fluids, circuits, optics, sound. | 12 |
| Discrete question setsFive questions each, every one settled by a named principle. | 6 |
| Chem/Phys questionsThe 12 passages and the 6 sets together. | 90 |
| Trap Bank all 4 sections | |
| Two-choice trapsCARS 32 · Bio/Biochem 49 · Chem/Phys 34 · Psych/Soc 40. Short drills, separate from the course questions. | 155 |
| Not in the Pass yet | |
| A complete MCAT courseNot yet. The Psych/Soc module is in progress and opens on the same key when it passes our checks. We don't promise dates. | — |
Everything below is free and complete, with the same correction the Pass gives you.
a correction, recorded on a phone ↑
How we check. Before a passage goes live, its questions are solved again, blind, by reviewers who never see the key, and every answer has to come out the same as the key. That is our own internal check.
We don't have student reviews yet. They'll appear here when we do.
No. These are original passages and items written for Red Pen Prep, and the trap names are our teaching tool, not an official AAMC list. Use the official AAMC practice material too: it comes from the people who write the exam.
Your license key arrives in your receipt email. Open the course, enter the key, and everything in the Pass opens. The key works on up to 3 devices or browsers at a time. Your progress is saved in the browser you work in.
Give it a real try: a few passages, the prove-it step, the review of your misses. If within 14 days you decide it isn't helping you, write to our support address and you get a full refund. Once the refund is issued, your license key stops working.
No. New CARS passages and timed sections, more Bio/Biochem, and the Chem/Phys and Psych/Soc modules open on the same key as each one passes our checks. We don't promise dates.
It's the same Pass with the same updates. One payment, not a subscription.