Index your memory.
Master anything.
StudyDex turns any subject into recall you can trust — flashcards, spaced repetition that schedules itself, and a tutor built into every card. Start in under a minute.
- Free forever plan
- No credit card
- 5 study modes
Built for the material you're actually tested on
- MCAT
- USMLE Step 1
- SAT & ACT
- AP Exams
- Bar Exam
- NCLEX Nursing
- GRE & GMAT
- Languages
- Anatomy
- Organic Chemistry
- Vocabulary
- History Dates
- MCAT
- USMLE Step 1
- SAT & ACT
- AP Exams
- Bar Exam
- NCLEX Nursing
- GRE & GMAT
- Languages
- Anatomy
- Organic Chemistry
- Vocabulary
- History Dates
One set. Every way to learn it.
Build a set once, then attack it from five angles. Each mode reinforces the last — that's what makes it stick.
Flashcards
The fastest way inFlip through any set with keyboard-speed controls. Star the ones that trip you up and drill just those.
- Keyboard-first flipping
- Star & filter hard cards
- Audio & image support
Learn
Spaced repetition, done rightAn adaptive schedule surfaces each card exactly when you're about to forget it — the science of durable memory, automated.
- Adaptive intervals
- Forgetting-curve aware
- Daily review queue
Test
Exam-day rehearsalGenerate a mock test from any set — multiple choice, written, true/false — then get an instant, itemized breakdown.
- Mixed question types
- Timed mode
- Itemized results
Match
Recall as a gameRace the clock pairing terms and definitions. The kind of low-stakes practice that makes an hour disappear.
- Speed leaderboard
- Muscle-memory recall
- Great on mobile
AI Explain
A tutor on every cardStuck on a concept? Ask for a plain-language explanation, a worked example, or a memory hook — inline, without leaving the card.
- Plain-language answers
- Worked examples
- Mnemonic generator
This is StudyDex. Go ahead — flip a card.
No signup, no download. Flip the card, walk through all three, and tap AI Explain for a memory hook. This is the real component you'll study with.
We were tired of paying to remember things.
Every flashcard app eventually asks you to pay for the one feature that actually works: spaced repetition. The technique is decades old, backed by more research than almost anything else in learning science — and it kept ending up behind a paywall.
So StudyDex starts from the opposite premise. The scheduler that moves facts into long-term memory is free. The AI that explains a concept when it doesn't click is one tap away. And the whole thing is fast enough to use every single day — which, it turns out, is the only way any of this works.
That's the entire pitch: study smarter, keep more, pay less.
Not another flashcard clone.
Three deliberate choices that shape everything about how StudyDex works.
Spaced repetition, unpaywalled
The single most effective study technique shouldn't be a premium upsell. StudyDex puts the adaptive scheduler in the free tier, where it belongs.
A tutor on every card
Most flashcard apps stop at the flip. When a card doesn't click, StudyDex explains it inline — plain language, worked examples, memory hooks — instead of sending you to search.
Built for speed
Keyboard-first controls, instant navigation, and a UI that stays out of the way. Studying should feel like flow, not friction.
A look inside.
Real coded surfaces from the app — study sets, decks, and modes.
MCAT — Biochemistry
Spanish 2 — Verbs
AP US History — Unit 4
USMLE — Pharmacology
Organic Chem — Reactions
SAT — Vocabulary
Free where it counts. Pro when you're ready.
The study science is free forever. Upgrade only if you want unlimited AI and power-user tools.
Free
Everything you need to study, forever.
- Unlimited flashcard sets
- Learn, Test & Match modes
- Spaced repetition scheduler
- Study on web & mobile
- 5 AI explanations / day
Pro
For students who live in their sets.
- Everything in Free
- Unlimited AI explanations
- Custom study schedules
- Advanced test generation
- Offline mode
- Priority support
Prices in USD. Annual billing shows the effective monthly rate. Taxes may apply.
Everything else you might ask.
- Yes. The Free plan includes unlimited flashcard sets and every core study mode — Learn, Test, and Match — plus the spaced-repetition scheduler. No credit card required. Pro adds unlimited AI explanations and power-user features.
- Spaced repetition schedules each card to reappear right as you're about to forget it. Reviewing on that curve moves facts into long-term memory far more efficiently than cramming. StudyDex's Learn mode handles the scheduling for you automatically.
- On any card you can ask for a plain-language explanation, a worked example, or a memory hook. The answer appears inline so you never lose your place. Free includes a daily allowance; Pro is unlimited.
- Yes. StudyDex is a responsive web app that works in any modern mobile browser — no install required — with touch-friendly controls for flipping cards and playing Match.
- No. StudyDex runs entirely in your browser. Create an account, build a set, and start studying in under a minute.
- Anyone memorizing structured material — from high-school and university courses to standardized tests like the SAT, MCAT, USMLE, and bar exam, to language learners building vocabulary.
More questions? See the full FAQ.
Start remembering more today.
Create your first set and run it through every mode in the next five minutes. Free forever — no card required.