MCAT science prep where every answer is cited to the page it came from.
Ask a biology, chemistry, physics or psychology question. Med Guru Pre-Med answers from the textbook page itself. Then practice with a course paced by you and MCAT-style questions. An AI explains your reasoning, not just the right answer.
Free for three days — the assistant, the course and the question bank. No card.
- MCAT-style
- practice questions, many in passage-based sets
- Page-cited
- every claim references the book and page it came from
- Your reasoning
- the AI reads the answer you chose and shows where the reasoning slipped
Answers you can verify,
not vibes.
It answers from passages pulled out of the textbooks themselves. Tap a citation and the page opens. If a topic is not in the library, it says so instead of guessing.
How do I find a buffer’s pH with Henderson–Hasselbalch?
A buffer resists changes in pH because its weak acid neutralizes added base and its conjugate base neutralizes added acid1. By the Henderson–Hasselbalch equation, pH = pKa + log([A⁻]/[HA]), so pH equals pKa when the acid and its conjugate base are present in equal concentrations2.
1General chemistry text · p. 301 · Acid–base equilibria
A buffer is a mixture of a weak acid and its conjugate base that resists changes in pH…
2Biochemistry text · pp. 88–89
When [A⁻] equals [HA], the log term is zero, so pH = pKa…
For MCAT preparation
A study system,
not just a chatbot.
The course is organized by topic and split into tasks. Each task assigns textbook pages and links its practice questions. Learn a topic and test it in one sitting.
- Pick the topics and a weekly pace — no dates, nothing overdue
- A projected finish that moves with you, not against you
- Accuracy by subject and topic, with a drill for your weakest one
- The science of the MCAT, in six subjects — CARS is not covered
Biology
General Chemistry
Organic Chemistry
Biochemistry
Physics
Psychology & Sociology
Biochemistry · Enzyme kinetics
Read the assigned pages, then practice exactly this topic
After you answer
It explains your mistake.
Most question banks mark you right or wrong. This one reads the choice you made. Why was it tempting? Where did the reasoning slip? Then it stays to talk the question through.
- An analysis of the answer you gave, not just the right one
- The correct answer, how others answered, and the full explanation
- Ask “why is B wrong?” and keep asking — it is a conversation
- The science it brings in is cited to a textbook page
AI review of your answer
B was tempting: a competitive inhibitor does slow the reaction at low substrate. The step that slipped was high [S]. Enough substrate outcompetes the inhibitor, so Vmax is unchanged while the apparent Km rises1.
So how would that look on a Lineweaver–Burk plot?
From chat to practice
Curiosity becomes
active learning.
Ask about whatever caught your attention. Tap “Practice this topic” for a session on what the chat covered. It does not answer you and stop — it hands you the practice.
- Ask → read the page-cited answer → practice the topic, without leaving
- It proposes the topics from your conversation; change them before you start
- Passage-based sets, answered in order, the way the MCAT asks
- Chemistry written properly — reaction arrows, equilibria and formulas
Why do tertiary substrates favor SN1 over SN2?
A tertiary carbon is too crowded for the backside attack SN2 needs1. It also forms the most stable carbocation, and forming that carbocation is the slow step of SN12…
Practice this topic →
Passage · A student measures how fast three alkyl bromides hydrolyze in aqueous ethanol, then repeats the run at double the nucleophile concentration…
1Which substrate in Table 1 reacts fastest, and why?
2The rate does not change in the second run. This suggests…
3Which solvent change would most likely slow the reaction?
Questions, answered.
What is Med Guru Pre-Med?
A study assistant for pre-med science courses and the MCAT. It answers from a library of pre-med science textbooks and cites the book and page behind every claim. It also has a course organized by topic and a bank of MCAT-style practice questions.
Which subjects does it cover?
Biology, General Chemistry, Organic Chemistry, Biochemistry, Physics, and Psychology & Sociology — the science the MCAT tests. It does not cover CARS (Critical Analysis and Reasoning Skills).
How do the citations work?
Every claim in an answer carries a numbered reference to the book and page the passage came from. Tap it and the page itself opens, so you can read the source instead of trusting the summary. An AI can still be wrong; the citation is how you check.
What happens when the library does not cover my question?
Med Guru Pre-Med says so instead of guessing. An answer with no source behind it is exactly what it is built to avoid.
What is in the question bank?
MCAT-style questions, many in passage-based sets that ask several questions about one passage. After each answer you see the explanation, how others answered, and an AI review of the choice you made, cited to the page.
Does it answer questions about the MCAT itself, or admissions?
No. It does not answer questions about test format, scoring, dates, registration or medical-school admissions. It says so and points you to the official source.
What does the free trial include?
The whole product for three days — the study assistant, the course and the question bank — with a small answer allowance to try them. No card, one trial per person, and it starts when you confirm your email.
Which plans are there?
Two terms, 3 Months and 6 Months. Both open everything, and 6 Months costs less per month. Each carries an answer allowance that refills every month, so there are no per-message fees.
Can I pay without a card?
Yes. Besides card payment through Paddle, you can pay by Whish Money transfer or in crypto (BTC, ETH, USDT or USDC). A person confirms each transfer, and then your access starts.
Can I cancel whenever I want?
Yes. A card plan cancels from your account page, and you keep access until the end of the period you paid for.
Is it an official MCAT product?
No. Med Guru Pre-Med is an independent study tool. It is not affiliated with or endorsed by the organization that administers the MCAT.
More on how the citations work, what happens after you answer, turning a chat into practice, building an MCAT study schedule, trusting AI in pre-med study and paying without a card.
Start with the thing you’re stuck on.
No card. Everything unlocked. It starts when you confirm your email.