Flash
Spaced-repetition flashcards your AI can run: Claude, ChatGPT, or Grok writes cards from your notes, quizzes you hands-free by voice, grades answers, and FSRS schedules every review. Imports Anki decks. Free and open source.
Documentation
Claude’s favoriteflashcards.
Flash is a flashcard app your AI can use. Tell Claude, ChatGPT, or Grok what you want to learn — it writes the cards, schedules the reviews, and quizzes you. You just remember more.
Every card is scheduled by FSRS, the modern spaced-repetition algorithm that models your memory and shows you each card right before you'd forget it — the fewest reviews for the most retention.
claude
Next up — what is tachycardia?
“um… I think it's when your heart beats too fast? but I'm not sure”
claude
That's correct — a resting heart rate over 100 bpm.
good next review in 3 days
claude
How it works
01
Tell your AI what you're learning
Paste notes, a chapter, a menu — or just describe it. Claude, ChatGPT, or Grok turns it into flashcards for you.
02
It handles the hard part
Every card is scheduled with spaced repetition — you see it again right before you'd forget it. No settings to learn.
03
You just study
A few minutes a day on the web — or out loud, with your AI asking the questions and grading your answers.
Works with your AI
| AI | In chat | Study by voice |
|---|---|---|
| Yes | Yes | |
| Yes | Yes | |
| Yes | — |
Any assistant that speaks MCP can run Flash in chat —.
Nothing gets lost.
No more losing important questions and context right when your exam is coming up. Everything you study with your AI lands in Flash — secure, synced, and yours forever.
No clutter. Just the next card.
Built for focus: one card, four buttons, and a scheduler that gets the most out of every minute you give it.
Spanish 3 due
la biblioteca
space
3 left
Your Anki decks import whole.
Cloze deletions and hints, images, audio, LaTeX, typed answers, nested decks — the whole toolbox survives the trip, and every card comes out wearing Flash's clean look.
Imported deck 3 due
The [structure] is the heart's primary pacemaker, firing at […] bpm.
space
3 left
The [structure] is the heart's primary pacemaker, firing at […] bpm.
The sinoatrial node is the heart's primary pacemaker, firing at 60–100 bpm.
Conduction path:
- SA node
- AV node
- Bundle of His
- Purkinje fibers
The [region] lies beyond Neptune, home to Pluto and thousands of icy bodies.
ku y per belt
The Kuiper Belt lies beyond Neptune, home to Pluto and thousands of icy bodies.
ephemeral — lasting a [how long?] time.
ephemeral — lasting a very short time.
“The morning frost was ephemeral — gone by nine.”
Pricing
Free
$0
- Your first 1,000 cards
- Full spaced-repetition scheduler
- Web study & voice study with your AI
- Import and export
- Synced across all your devices from day one
Nothing held back but the card count.
Pro
$5/mo
.
Self-host
$0 · open source
.