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MCAT^® Flashcards: Anki, the Obsession, and the Case for Atomic Cards

September 20, 2026

Anki runs premed study culture, and the research mostly backs it up. It also comes with review walls, 19,000-card megadecks, and cards that quietly test four things at once. The pros, the plot holes, and the case for one fact per card.

There is a specific kind of premed who answers "how are you" with a number. "Good, I have 340 reviews left." You know this person. You might be this person. No judgment. We love a committed queen.

Welcome to the Anki conversation. Grab a snack. Statistically, a lot of you are already eating while doing reviews anyway.

Anki Is the Main Character

Anki runs premed and med school study culture, and the numbers are wild. A survey of first-year medical students at the University of Central Florida found 94 percent of them used Anki. Of those users, 97.6 percent leaned on premade decks, 78 percent preferred fill-in-the-blank cards, and 56.6 percent admitted to doing Anki while exercising or eating. Nothing screams work-life balance like reviewing glycolysis between bicep curls.

On the MCAT^® side, the famous decks come with lore. Picking one on r/MCAT^® has the exact energy of picking a starter Pokémon. MileDown is the approachable one, around 2,900 cards and mostly fill-in-the-blank. JackSparrow runs about 6,000 cards and carries the legend that its creator reportedly scored a 527. Mr. Pankow owns psych/soc with roughly 2,200. Then things get unhinged. Bouras sits at 13,333 cards, and one reviewer who opened Abdullah's megadeck sat down and counted 18,885.

The deck-size arms race

Card count, and the time to see each card once

Card counts from deck roundups by TestPrepNerds, MCAT Study Planner, and MasterStudent. Hours assume ten seconds per card for a single pass, before any reviews come due.

That second number is the one nobody puts on the download page. At a brisk ten seconds a card, just seeing Abdullah's deck once takes over fifty hours. That is before a single review comes due. Anyway, hydrate.

The glow-up is real, though, and it comes with receipts. Anki runs on spaced retrieval, the combo learning researchers give their highest utility rating. In med school, Deng and colleagues found every 1,700 unique Anki cards was associated with an extra point on Step 1, even after controlling for MCAT^® score, grades, and test anxiety. A 2023 study by Wothe and colleagues found daily Anki users scored higher on Step 1 and reported better sleep quality, with no difference on the other wellness measures. A 2025 systematic review saw the same direction across studies and was upfront that most of the evidence is observational. Anki is free on desktop, endlessly customizable, and has a plugin for basically everything. Main character behavior.

The Plot Holes

Every main character gets a flaw arc. Here is Anki's.

The review wall. Every new card today becomes a review tomorrow, next week, and next month. Add too many and the pile snowballs. On the Anki forums, one user described clearing 1,671 reviews in a single day, which took the entire day, and then discovering they had pressed Hard so often that most of their cards had sunk into what the community calls ease hell. That many cards in one day is a full-time job with no pay and no dental.

The time bill. Results also vary by setting. A 2026 survey of 306 medical students in Saudi Arabia found no significant link between Anki use and GPA, and nearly three quarters of users named the time commitment as their biggest barrier. Anki gives back what you put in, and it asks for a lot.

Borrowed brains. Premade decks are convenient, and they were built around somebody else's gaps. In the same Deng study, cards from the commercial premade service Firecracker showed no link to Step 1 scores. One study, correlational, still worth a side-eye. Using a stranger's deck is a little like wearing a stranger's retainer. Technically it fits in your mouth.

The fill-in-the-blank trap. Cloze cards are fast to make, which is why everyone loves them. Andy Matuschak, who has written some of the most careful work out there on memory prompts, noticed they drift toward shallow pattern matching, since the rest of the sentence keeps feeding you hints. After a few reps you remember the answer, sort of, because you recognize the shape of the sentence around it. Congrats, you learned the vibe of the Krebs cycle. He is also fair about it and says cloze cards beat having no cards at all. So the ruling on cloze is keep it and keep an eye on it.

The fat card. This is the big one, and it gets its own section.

One Card, One Fact

Back in 1999, Piotr Wozniak, who built SuperMemo, the software modern spaced repetition grew out of, wrote twenty rules for formulating knowledge. Rule four is the minimum information principle: put what you learn in the simplest form you can. Rule nine says to avoid sets, because asking yourself for a list of members in whatever order they surface has what he calls a disastrous effect on memory. He adds that sets bigger than about five are close to impossible to keep without mnemonics or grouping tricks.

Matuschak's guide to writing prompts lands in the same place. Good prompts are focused on one detail, precise about what they ask, consistent enough to light the same bulbs every time, tractable, and effortful.

Here is why this matters so much, and it comes straight from how schedulers work. A card gets one rating. That rating sets one next review date. So picture a card asking for the four components of culture. You nail three and blank on norms. Now what? Rate it a miss and you re-grind three facts you already knew. Rate it Good and norms gets shipped off for weeks while you pretend everything is fine. Both options give the ick.

Splitting a fat card

One card with four facts becomes four cards with one each

Adapted from PurpleCAT's Psychology & Sociology deck, which splits the components of culture into four separate cards.

Split that card into four and the problem evaporates. Each fact gets its own rating and its own schedule. The easy ones float off to next month. The one you keep missing stays in your face until it sticks. Wozniak points out something sneaky here too: when you break a set into small, well-built items, the total knowledge you walk away with is often bigger than what the original card held.

That is the design behind PurpleCAT's flashcards. Every card is one prompt and one answer. The components of culture live on four separate cards: material objects, norms, behaviors, values. The demographic transition model gets one card for how it starts and another for how it ends. Yes, that means more cards. Each one takes a couple of seconds, and the scheduler finally gets to do its job, which is the entire point of having one.

So here is the vibe check for any deck, ours or anyone else's. Flip the card and read the answer out loud. If you can't say it in one breath, the card is doing too much. Split it or skip it.

Use Anki if you love Anki. Use ours if you would rather have atomic cards already written and sorted into topic decks. Either way, stop letting a 19,000-card deck run your life. You have friends. They miss you. They think a flashcard app kidnapped you, and honestly, they have a point.

Sources

flashcardsankispaced repetitionatomic flashcardsstudy strategypre-med

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