A free account syncs your decks to the cloud and includes an AI-generation allowance — no API key needed.
Stored only in this browser, never sent anywhere except OpenRouter.
Only needed if you're not signed in — accounts include an AI allowance. With a key, usage is billed to your OpenRouter account and requests go directly from this browser.
Any OpenRouter model ID works — choose "Custom" to type one. Swap freely to compare quality and cost.
Caps how many never-studied cards are introduced each day, so a big new deck doesn't bury you tomorrow. Cards you've already seen are never held back.
Describe what you want to study. The AI may ask a couple of questions before writing the cards.
Paste notes, a syllabus, or an article — the AI writes cards from what's actually in it.
The AI rewrites the deck to follow your direction. You can steer as many times as you like before saving.
Change the title, questions, answers, and notes. Nothing is stored until you save.
The AI can add cards or revise the whole deck in one pass. Progress on kept cards is preserved — review the result, then save.
Tap the card (or press Space) to flip between question and answer