Almost every student I've talked to has tried Anki. Almost none of them are still using it.
The pattern is so consistent it's almost funny. You hear about spaced repetition. You read a Reddit thread. You download Anki. You spend a Sunday building a beautiful deck for your hardest class. You drill it for four days. By week two, you have 800 cards due, you missed a day, and the whole thing feels like an obligation. By week three, the app is uninstalled.
The problem isn't spaced repetition. The science is real. The problem is the deck management. Building cards is a chore. Maintaining cards is a chore. Deciding which deck to drill today is a chore. The cognitive overhead of running your own SRS app is, for most students, larger than the benefit.
Fennie's flashcards are built around removing that overhead.
The premise, in one paragraph
You take a note. You click Flashcards. Fennie generates a deck. The deck enters your spaced rotation. Each morning, the cards that are due — based on Memory's view of how solid you are on each card — show up in your daily plan. You don't manage decks. You don't decide what to drill. You do the cards in your plan, and the system handles the rest.
That's it. That's the whole thing.
Why this works (briefly)
I'll keep the science short because there's already a thousand blog posts on it. Two effects do most of the work:
The testing effect: actively recalling something strengthens memory more than re-reading it. Reading a textbook chapter five times is worse for retention than reading it once and trying to recall the key points four times.
The spacing effect: spreading practice over time produces dramatically better long-term retention than cramming. Cards you've nailed should reappear days later. Cards you missed should reappear tomorrow. Cards you've truly mastered shouldn't reappear for weeks.
Spaced repetition combines both. The cards are tests (testing effect), and they're scheduled across time based on your performance (spacing effect). Done right, an hour a week of cards beats most other study activities for raw retention.
The catch is "done right." Most students don't, because building and maintaining good cards is the actual hard part.
The two-click flow
Take a note in Fennie. Could be lecture notes, a chapter summary, a chunk you pasted from a textbook PDF. Could be three lines, could be three pages.
Open the note. Click Flashcards. Pick a card style if you want — definitions, fill-in-the-blank, image occlusion (for diagrams), Q&A. Default is fine. Click Generate.
You get a deck. Maybe 12 cards, maybe 30, depending on the note. They're scoped to the note's content, formatted cleanly, and added to your spaced rotation immediately.
You can edit any card. You can flag a bad card and Fennie regenerates it. You can add cards manually if you want. But you don't have to.
The whole thing takes 30 seconds.
How Memory drives which cards you see
Here's the part that makes this different from running your own deck.
Every flashcard you do, Fennie watches. Did you get it right immediately? Right after a beat? Wrong? Did you mark it easy or hard? That signal feeds Memory.
Memory holds a picture of how solid you are on each card and on the concept underneath the card. Not just "this card scheduled for Thursday" but "you've reliably nailed the chemical mediators of acute inflammation, but the timeline of leukocyte migration is shaky."
When tomorrow's plan gets built, Memory pulls cards based on that picture. Solid stuff drops out. Shaky stuff comes back. Brand-new material from yesterday's lecture gets first-pass cards. The plan stays at a reasonable length — you're not staring at 400 due cards on Sunday — because Memory is making real choices about what's worth your time.
The flashcards block in your daily plan typically takes 8–15 minutes. That's the right amount.
What this looks like across a term
Let me walk through two students.
MCAT prepper, six months out
You start in November for a May test. The early plan looks loose — you upload your prep books, take notes on the high-yield topics you cover that week, and let Fennie generate cards as you go.
By December you have maybe 1,200 cards spread across bio, biochem, gen chem, orgo, psych/soc, physics, and CARS-adjacent vocab. You don't drill all 1,200. Memory cycles you through the ones you need. On a typical morning your plan has 14 cards due — three from biochem you got wrong last week, four new psych terms from yesterday's note, three orgo mechanism cards you've been solid on (resurfacing for retention), and a few CARS vocab.
By February the deck is bigger but your daily card count is roughly the same. The system has learned what you know cold and stops pestering you about it.
By April — test prep month — Memory shifts. Cumulative practice goes up. The cards you've been quietly aceing for weeks resurface to make sure they're still locked in. Weak topics get more daily real estate.
At no point did you build a deck. At no point did you decide to drill biochem today instead of orgo. The plan made the call. You did the cards. The system worked.
AP Bio student, full school year
September: you're taking notes in class. Each week you turn the week's notes into a flashcard deck. By Halloween you have a few hundred cards.
The thing AP students consistently underestimate is cumulative review. Photosynthesis was in week 4. The unit test on photosynthesis was in week 6. Now it's week 18 and the AP exam is in May. Most students never see those cards again until the week before the exam, then panic.
Fennie's flashcards keep showing up. Not constantly — Memory knows you got photosynthesis cold in October — but every few weeks, a couple of light-touch cards resurface. By April you don't need a panicked re-review of the early units. You've been doing micro-reviews of them all year.
This is the boring, correct way to study a cumulative subject. Almost nobody does it without help.
The card formats that actually work
Some honest opinions on what to use.
Definitions and term-to-meaning are the workhorse. Most flashcards in most decks. Fennie generates these well from any note with terminology.
Fill-in-the-blank is great for procedural knowledge — equations, statutes, mechanism steps. Better than Q&A for this kind of material because you're recalling the specific token that matters, not paraphrasing.
Image occlusion is for diagrams. Anatomy, organic chem mechanisms, circuit diagrams, system maps. Upload an image to a note, generate occlusion cards, and you'll get a deck that hides labels and asks you to recall them. This is one of the highest-leverage card types and almost nobody uses it because in Anki it's a pain to set up.
Q&A on application — "given this scenario, what's the right diagnosis / cause of action / mechanism?" — is for the kind of test that asks you to apply knowledge, not just recall it. Don't overdo these in early study; they're better once you have the underlying terms locked.
You don't have to think about which format to pick. Default generation mixes them based on the source note. But knowing the formats exist means you can ask for a specific style when you want one.
What flashcards aren't for
Flashcards are not for first-time learning. If you don't understand a concept, no amount of card drilling will fix that — you'll memorize the surface and miss the structure. Read the chapter, work the problem, sit through the lecture. Then card it.
Flashcards are not for essay-based subjects in isolation. They're useful for terminology and key cases in law, key dates and figures in history, key authors and movements in literature. But they don't replace the analysis. Pair cards with active writing.
Flashcards are not for problems that require working through. You can't flashcard a Statics problem. You can flashcard the underlying definitions and equations, then go work the problem.
If your study plan is only flashcards, something's off.
The honest tradeoff
You give up some control. You don't pick your decks. You don't set your own intervals. The system decides.
For most students, that's a good trade. The reason most flashcard apps fail isn't the algorithm — it's the management overhead. Removing the overhead is what gets people to actually do the cards over a six-month or twelve-month timeframe.
If you're someone who genuinely loves crafting cards in Anki and tweaking your settings, you might prefer Anki. We're not trying to convert you. Fennie's flashcards are for the much larger group of students who tried Anki, gave up, and have been quietly missing the spaced repetition benefit ever since.
A practical first week
If you're new and want to try this:
Take notes for one course this week. End each lecture with a five-minute clean-up. Hit Flashcards on the cleaned note. Don't edit anything. Let the deck go into rotation.
Do the flashcards section of your daily plan every morning. Should be 8–15 minutes.
By next Friday, you'll have done five days of cards across one course. That's enough for Memory to start drawing real conclusions about you. Tomorrow's plan will start to feel pointed instead of generic.
That's the loop. The whole thing is short on purpose.
Notes in, cards out. Start with Fennie free.