A clear daily path to your MCAT score.

Ranvier starts with a 45-minute diagnostic that finds what you know, how you reason and why you miss questions. Then it builds a study path around your target score and your schedule, lets you skip what you have already mastered, and gives you Node, a tutor that runs sessions built for you.

Launch · Q3 2027

--days

--hours

--min

--sec

to the start of Q3 2027

Built for students testing from summer 2027 onward.

Ask about early access See how it works

Early access: we email you when the beta opens. No payment now.
Planned price: $599–699, Node included. Access length and refund terms will be published before launch.

Ranvier · Today

Ranvier

TodayPathNodeReviewExams

96 days to test day

Projected score

525

Likely range 522–527 · Target 527

Chem/Phys

132

CARS

129

Bio/Biochem

132

Psych/Soc

132

Today’s path · about 1 h 40 m

Review due cards48 cards, mixed sections
14 min
CARS: 3 timed passagesYour weakest section right now
30 min
Enzymes: 12 questionsCategory 1A, a weak spot
25 min
Node session: glycolysisCoach mode, built for you
30 min
Full-length exam 3Saturday, 8:00 am
Sat

Why CARS next: it has the most points available for you this week.

Example student data. Ranvier launches in Q3 2027.

Q3 2027: public launch, starting with the MCAT
45 min: planned length of the Signal Diagnostic, in place of a 7.5-hour first exam
+10 pts: target average gain from first diagnostic to official score
±3 pts: target accuracy of the projected score against the real exam

Score gain and projection accuracy are launch targets, not results. Ranvier has not launched and has no student results yet. MCAT® is a registered trademark of the AAMC; Ranvier is not affiliated with or endorsed by the AAMC.

[ 01 ] // What’s different

Five things
other prep doesn’t do

Signal Diagnostic

45 adaptive minutes instead of a 7.5-hour first exam, and it tells you why you miss.

Leap

Prove you know a topic in a few questions and jump past it.

Tune your path

Set your hours, study style and session length. The path rebuilds around you.

Node sessions

A tutor that builds custom sessions: explain, coach, drill, debrief or teach-back.

Stamina training

See where your accuracy drops across 7.5 hours, and train for it.

[ 01b ] // Who it is for

Six students,
six different problems

Two students with the same score can need opposite fixes. Ranvier is built for the differences.

Testing for the first time

Months of preparation ahead and no clear place to begin. You start with 45 minutes, not a full day, and leave with a starting estimate, an honest range and a path to your target.

Retaking

You have a score and need a different one. The miss fingerprint separates what you don’t know from what you misread, so the path fixes the right problem.

Studying around a job or a full course load

Set different hours for each day of the week and sessions from 25 to 90 minutes. Miss a day and the path rebuilds across the rest of the week, with no backlog.

Strong in the sciences, weaker in CARS

CARS has its own three reasoning skills on the weak-spot map, timed passages in the daily path, and Node explanations that work from the passage.

Watching the cost

The help that matters most is usually a tutor billed by the hour. Node is included in every plan, with nothing to book.

Fading late in the exam

The exam is seven and a half hours long. After each full-length exam you see where your accuracy drops, and stamina blocks are added to your path.

[ 02 ] // The Signal Diagnostic

Start in 45 minutes,
not 7.5 hours

Most prep starts with a full-length exam that takes a day and returns four numbers. The Signal Diagnostic adapts to you question by question and stops when it is confident. It measures three things in every section: what you know, how you reason, and how you handle the clock.

It adapts as you answer

Harder when you’re right, easier when you’re not

Each answer picks the next question. Get one right and the next is harder; miss one and it steps back. In about 40 questions it has found your level in every section, so you spend the day studying, not sitting a test.

Three signals per section: knowledge, reasoning and pace
A starting score estimate with an honest range
Feeds straight into your path

Signal Diagnostic · Question 38 of about 40

Difficulty of each question

Settled: your level found in 38 questions

KnowledgeReasoningPace Chem/Phys CARS Bio/Biochem Psych/Soc

Starting estimate: 511, likely range 508–514. Biggest gap: CARS reasoning.

Example student data.

Miss fingerprint

It tells you why you miss, not just what

Two students with the same score can need opposite fixes. One doesn’t know the content; the other knows it and misreads the question. Ranvier sorts every miss by its cause, so your path fixes the right problem.

Content gap, misread, trap answer, time, or a changed answer
Updated after every session and every full-length exam

Signal Diagnostic · Why you miss

Your miss fingerprint · 21 misses

Didn’t know the content

38%

Misread the question

24%

Chose the trap answer

17%

Ran out of time

13%

Changed a right answer

What this changes: a quarter of your misses are reading errors, so your path adds question-stem drills before more content review.

Example student data.

[ 03 ] // Your path

Built around you,
and it jumps ahead

Ranvier is named for the nodes of Ranvier, the gaps along a nerve fiber that let a signal leap from node to node instead of travelling the whole length. Your study path works the same way: it leaps over what you already know and spends your time where the points are.

Path · 96 days to test day

511Signal Diagnostic

General chemistry · leapt

Wk 2Biochem foundations

517Full-length 1

Sociology terms · leapt

Wk 8CARS reasoning

525Full-length 3 · you are here

Wk 12Stamina blocks

527Test day · target

Leap: you answered 5 of 5 on general chemistry and 5 of 6 on sociology terms, so the path skipped 19 hours of review you didn’t need. They stay in your timed review so you keep them.

Example student data.

Tune your path

Prep that fits how you study

Set your target score, your test date and the hours you have. Then tune how you like to learn: questions first or review first, short sessions or long ones, weakest areas first or a balanced mix. Change any setting and the whole path rebuilds in seconds.

Different hours for each day of the week
Session length from 25 to 90 minutes
Turn Leap, stamina blocks and weekend exams on or off

Path · Tune your path

Target score

527

Study style

Questions firstReview first

Session length

25 min50 min90 min

Focus

Weakest firstBalanced

Leap what I knowStamina blocksWeekend full-lengths

Path rebuilt: 96 days, 142 sessions, 6 full-length exams. Projected range at this pace: 524–528.

Example student data.

Life happens

Miss a day and the plan adjusts

Tell Ranvier your hours for each day. If you miss one, the path rebuilds across the rest of the week. There is no backlog to feel guilty about, and your full-length exams stay where you scheduled them.

Path · Your week

Hours you set

Mon1.5

Tuemissed

Wed1.5

Thu2

Fri1

Sat7.5

Sunoff

Tuesday missed: the path rebuilt. Two tasks moved to Thursday, and Saturday’s full-length exam stays where it is.

Example student data.

[ 03b ] // How it works, step by step

From the first 45 minutes
to test day

Diagnose

About 40 adaptive questions find your level in every section and give three signals for each: knowledge, reasoning and pace. You get a starting estimate with a likely range.

Set the target and the hours

Your target score, your test date and the hours you have on each day of the week. Then how you like to study: questions first or review first, short sessions or long ones, weakest areas first or a balanced mix.

Open today’s path

Each day lists its tasks and the time each takes: review cards that are due, timed passages in your weakest section, questions on a weak content category and a Node session.

Leap what you know

Prove a topic in a few questions and the path skips it. Leapt topics stay in your timed review, so you keep them.

Sit the full-length exams

They stay on the days you scheduled. Afterwards Node walks through your most costly misses in order, and the stamina curve shows where your accuracy dropped.

The path rebuilds

The miss fingerprint updates after every session and every full-length exam. The next week is built around the gaps that matter most for your target.

Every day says why. The path explains its choice in a sentence, for example that CARS comes next because it has the most points available for you this week. Change any setting and the whole path rebuilds in seconds.

[ 04 ] // Node

A tutor that builds
sessions for you

Node is Ranvier’s built-in AI tutor. It is software, not a person, and it is included in every plan with nothing to book. Before each release, experts review a sample of its explanations. Ask for a session and Node builds one from your weak spots, in the style you want.

Five ways to work with Node

Pick a mode, or let Node choose

Explain Walks through why each answer is right or wrong.
Coach Asks you questions first, so you reach the answer yourself.
Drill Rapid questions on one gap until it closes.
Debrief After a full-length exam, your most costly misses, in order.
Teach-back You explain a topic out loud, and Node tells you what you left out.

Node · Custom session

ExplainCoachDrillDebriefTeach-back

Built for you · 25 min · Enzyme kinetics

Warm-up3 recall questions
3 min
CoachOne passage, you reason first
10 min
Drill6 rapid questions
8 min
RecapWhat changed, what’s next
4 min

Node

Before I explain: K_m didn’t change below pH 6. What does that tell you about binding?

The substrate still binds?

Right. So binding is fine and the rate still fell. Which step of catalysis depends on that histidine?

Example session.

Explain mode

Every passage, explained from the passage

In Explain mode, Node shows why each choice is right or wrong, points to the line in the passage and names the content category or CARS skill it tests. Then it gives you the next question on the same idea.

Works for science passages and for CARS
Follow-up questions on the exact gap

Practice · Bio/Biochem

Passage 4 · Question 2 of 6

Researchers measured an enzyme’s kinetics from pH 4 to 10. Activity peaked at pH 7.4. Below pH 6, K_m was unchanged but k_cat fell sharply, and a histidine in the active site became protonated.

Which change best explains the loss of activity below pH 6?

A. The enzyme denatures completely
B. The substrate can no longer bind
C. A catalytic residue changes charge
D. Product release becomes faster

Node

B looks right, but K_m is unchanged, so the substrate still binds. k_cat falls because the protonated histidine can no longer act as a base. That is C.

Next: two more questions on how pH changes amino acid side chains.

Content category 1A · Structure and function of proteins and their constituent amino acids

CARS · Passage 2 · Question 4 of 6

The author argues that museums should lend their collections freely, because an object teaches most where people can stand in front of it, and concedes that travel puts fragile works at risk.

Which finding would most weaken the author’s argument?

A. Fragile works are sometimes damaged in transit
B. Visitors learn as much from high-quality reproductions
C. Some museums already lend widely
D. Loans raise a museum’s public profile

Node

The argument depends on standing in front of the real object. B removes that reason. A is something the author already concedes, so it does not weaken the claim.

CARS skill · Reasoning beyond the text

Sample passages written for Ranvier.

[ 05 ] // Points and stamina

Know where the points are,
and last the whole exam

Weak-spot map

See where you are losing points

The map follows the official AAMC content outline, so you can see which categories cost you points and how much each is worth. Ranvier builds the next week around the gaps that matter most for your target.

Every AAMC content category, plus the three CARS skills
Weak spots ranked by the points you could gain

Path · Weak-spot map

Mastery by AAMC content category

Bio/Biochem

1A1B1C1D2A2B2C3A3B

Chem/Phys

4A4B4C4D4E5A5B5C5D5E

Psych/Soc

6A6B6C7A7B7C8A8B8C9A9B10A

CARS

ComprehensionWithin the textBeyond the text

StrongBuildingMost points to gain

This week: 1A (proteins and enzymes) and CARS reasoning beyond the text, about 4 points to gain together.

Example student data.

Stamina curve

Train for hour six, not just question one

The MCAT is seven and a half hours long, and many students lose points late in the day that they would have earned in the morning. After each full-length exam, Ranvier shows your accuracy section by section and where your pace slips, then adds stamina blocks to your path.

Accuracy across all four sections and the breaks between them
Minutes per passage against the pace you need

Exams · Full-length 3 · Stamina

Accuracy through the exam

Chem/Phys84%CARS71%Bio/Biochem80%Psych/Soc68%

Late drop: your Psych/Soc accuracy is 82% in untimed practice but 68% at the end of a full exam. Two stamina blocks are added before your next full-length.

Example student data.

Ranvier includes its own practice passages, review cards and study plan, so it replaces the planner, the flashcard deck and the hourly tutor. You bring the official AAMC practice exams, and you can log scores from them and from any question bank you already use, so your path accounts for everything.

[ 05b ] // What is included

What Ranvier includes,
and what you bring

Ranvier replaces the planner, the flashcard deck and the hourly tutor. It does not replace the official practice exams.

Part of your prep	From	Detail
Practice passages and questions	Ranvier	Original content written for Ranvier, for the science sections and for CARS.
Review cards	Ranvier	Timed review, including the topics you leapt.
Study plan	Ranvier	Built around your target score, your test date and your hours, and rebuilt when any of them change.
Tutoring	Ranvier	Node, in five modes: explain, coach, drill, debrief and teach-back.
Official practice exams	You	You bring the official AAMC practice exams and sit them on the days you schedule.
Scores from other tools	You	Log your scores from the AAMC exams and from any question bank you already use, so your path accounts for everything.

MCAT® is a registered trademark of the AAMC. Ranvier is not affiliated with or endorsed by the AAMC.

[ 06 ] // Why we’re building it

Seven and a half hours,
four sections, one number

The MCAT is scored from 472 to 528 across four sections: Chemical and Physical Foundations, Critical Analysis and Reasoning Skills (CARS), Biological and Biochemical Foundations, and Psychological and Social Foundations. About 86,000 people sit it each year, across about 98,000 sittings (AAMC), and most prepare for months.

You become the planner

A question bank, flashcards, CARS drills, practice exams and a spreadsheet to hold it together. None of them knows about the others, so planning becomes a second job.

Scores without reasons

A practice exam tells you what you got wrong. It rarely tells you why, and the fix for a content gap is different from the fix for a misread question.

Coaching by the hour

The help that matters most is someone who explains why an answer is wrong and what to do next. That usually means a tutor billed by the hour, which many students can’t afford.

[ 07 ] // Launch targets

What Ranvier
has to prove

Ranvier has no results yet. These are the targets it is built to reach, and how each will be measured once students use it.

Measure	Target	How it will be measured
Average score gain	+10 pts	First diagnostic compared with the official score. Reported for every student who shares a score, not only those who finish their plan, and broken out by starting score.
Projected-score accuracy	±3 pts	Projection on test day compared with the official score, reported after launch.
Signal Diagnostic agreement	±4 pts	Starting estimate from the 45-minute diagnostic compared with the same student’s first full-length exam.
Node’s explanations supported by the passage	99%	Expert review of a sample of explanations before every release.
Still studying after four weeks	70%	Students active in week 4 after starting.

[ 07c ] // Questions students ask

Before you ask
about early access

Is Node a person?

No. Node is Ranvier’s built-in AI tutor. It is software, it is included in every plan, and there is nothing to book.

Which test dates is it for?

Students testing from summer 2027 onward. The launch target is Q3 2027.

Does it replace my question bank?

Ranvier includes its own practice passages, review cards and study plan. If you already use a question bank, keep it if you like: log your scores from it and your path takes them into account.

Do I still need the AAMC practice exams?

Yes. You bring the official AAMC practice exams. Sit them on the days you schedule, log your scores, and your path takes them into account.

How long is the first diagnostic?

The Signal Diagnostic is planned at 45 minutes and about 40 questions, in place of a 7.5-hour first exam. Its target is to agree with your first full-length exam within 4 points.

What if I miss a day?

The path rebuilds across the rest of the week. There is no backlog, and your full-length exams stay where you scheduled them.

Can I turn features off?

Yes. Leap, stamina blocks and weekend full-length exams can each be switched on or off.

What will it cost?

The planned price is $599 to $699, with Node included. Access length and refund terms will be published before launch.

What does early access mean?

We email you when the beta opens. There is no payment now. Write to info@aurifex.com.

[ Au ] // The gold standard, here

How Ranvier meets the Aurifex standard

Every Aurifex product must solve a real problem, be proven before it ships, and be effortless to use. Here is what that means for Ranvier.

Real problem

MCAT students juggle a question bank, flashcards, practice exams and a spreadsheet, and still don’t know what to study today or whether they are on track.

Proven

Not yet: Ranvier has not launched. Explanations from Node, the AI tutor, must pass expert review before each release, and score gains and projection accuracy will be reported from real official scores after launch.

Effortless

One daily path built around your hours, Node on every passage, and review timed for you. Nothing to plan and nothing to book.

[ $ ] // Outlook

$1.0M expected
net revenue in 2031

Current trajectoryUpside

$1.0M: expected net revenue in 2031
Up to $1.9M: net revenue in 2031
$120–250M: total market a year
$30–38M: reachable today · MCAT prep tools bought by US students

Year	2027	2028	2029	2030	2031
Expected net revenue (current trajectory)	$10K	$90K	$300K	$650K	$1.0M
Up to	$20K	$170K	$550K	$1.2M	$1.9M

[ 08 ] // The path ahead

Launching Q3 2027,
then, if it works, into medical school

Nov 2026
Where it stands today
Brand, product plan and platform design. No student results yet.
Q3 2027
MCAT launch
Signal Diagnostic, the study path with Leap, Node sessions, the weak-spot map and stamina training. For students testing from summer 2027 onward.
2029 onward
Next: USMLE, COMLEX and board exams
After the MCAT, the same diagnostic, path and Node tutoring for USMLE Step 1 and Step 2 CK and COMLEX, then specialty board exams.

Ask about early access

We email you when the beta opens. No payment now. Planned price: $599–699, Node included.

MCAT® is a registered trademark of the AAMC. USMLE® is a joint program of the FSMB and NBME. COMLEX-USA® is a registered trademark of the NBOME. Ranvier is not affiliated with or endorsed by the AAMC, FSMB, NBME or NBOME. Node is a study aid, not clinical guidance. All practice content is original.

info@aurifex.com

[ AURIFEX ] // More from Aurifex