Atrio is a free flashcard app that turns PDFs, photos of handwritten notes, and pasted text into flashcards with AI, then schedules reviews with the FSRS-5 spaced repetition algorithm. It runs in the browser, and the first import works without an account. Atrio is in beta and built independently.
Free · no credit card · no subscription
Three steps, more is not needed.
A PDF, a JPEG or PNG photo, a CSV — or just paste the text.
Atrio pulls out facts, definitions and relationships and turns them into cards.
Review the cards; Atrio schedules the next review with FSRS-5.
A PDF, a JPEG or PNG photo, a CSV — or just paste the text.
Atrio pulls out facts, definitions and relationships and turns them into cards.
Review the cards; Atrio schedules the next review with FSRS-5.
Four ways in — no conversion step, no formatting rules.
Lecture scripts, slides, exam PDFs — processed page by page.
JPEG or PNG pictures of handwritten or printed notes.
Term and definition tables straight from your spreadsheet.
Clipboard content in, cards out — no file needed.
Every number below is read from the plan definition the app enforces.
Everything you need to study.
EUR 0forever
No subscription, no trial, no credit card.
More imports, and the exam planner.
EUR 5per month
Opened in waves. Until then there is no checkout, only the waitlist.
The 6 questions that come up before the first import — with limits taken from the code instead of from promises.
Atrio imports PDF files, photos of handwritten or printed pages (JPEG and PNG), CSV files, and text you paste directly. In the Starter plan each import covers up to 5 pages and up to 40 cards.
Not to try it: up to 3 imports work without signing up, once in total rather than per month. An account is what keeps your decks and your review history across sessions and devices, and the cards from guest mode move into your account when you sign up.
It depends on page count and server load, with progress shown page by page. Atrio converts the pages to images, sends them to an AI model and saves the cards one by one, so you always see which page is being processed. The Starter plan allows up to 5 pages per import.
Yes. Photograph your handwritten notes and Atrio processes the picture like any other photo. Check the generated cards once before you study: they come from an AI model and can contain mistakes.
The Starter plan is EUR 0 with no expiry. The paid plan, Der Endspurt, is EUR 5 a month and is currently on a waitlist. Studying, reviews and decks are included in both plans.
Your material is sent to exactly one external AI service: OpenRouter. Processing runs primarily through the provider InferenceNet and falls back to DeepInfra automatically when that provider is unavailable. Processing outside the EU is therefore not excluded; the privacy policy names the EU-US Data Privacy Framework and the EU standard contractual clauses as its basis. Your decks live in your own account, no advertising or tracking cookies are set, and no data is sold.
Read the privacy policy →The first import works without an account, FSRS-5 takes over from your first review, and an account keeps every deck on every device you sign in from.
Free · no credit card · no subscription