From your notes to test day, with Voo.

Turn notes or a PDF into flashcards that come back right before you'd forget them. Free to start, no card needed.

See who's struggling before the test.

Assign flashcards with a due date. Classes are for students 13 and up. Free to run a class. See teacher tools.

Free spaced-repetition flashcards with on-device AI, mini-games, Study-to-Earn and 1v1 Recall Race.

Make your first deck. Free, no card needed.

For students · For teachers

How it works · 10 steps

• 1. Try a deck first, no sign-up. Pick a deck and try it. No sign-up needed. Pick a deck and start studying. Sign up when you want to keep going.
• 2. Notes or Describe it become a deck. Paste notes, upload a PDF, or describe a topic. Voo drafts the deck. Paste notes or upload a PDF. Or describe a topic and get a deck. Edit anything before you study.
• 3. Flashcards that come back before you forget. Cards come back right before you would forget them. Rate each card: Again, Hard, Good, Easy. Spaced repetition schedules the next review.
• 4. Learn mode. Learn mode walks you through it. Learn mode walks you through the deck step by step. Your progress shows as you go. Graphs and simulations you can change are rolling out.
• 5. Organize in folders, classes and units. Keep every course in its own place. Group decks in folders for each course. A deck can be in more than one folder. Join a teacher's class with a code. Classes are for students 13 and up.
• 6. Set an exam deadline, get a study plan. Tell Cardvoo when the exam is. It plans each day until then. Set the date of your exam. See what is due today and what is coming. The countdown updates as you study.
• 7. Practice exam. Practice the real thing before test day. Questions come from your own deck or notes. See what to review next.
• 8. A tutor that asks first. A tutor that asks first, then helps. The tutor asks a question first, then helps. AI can make mistakes, so check facts that matter.
• 9. Mini-games from your own cards. Play quick rounds made from your own deck. Weak-Spot Blitz and Speed Grid use your own cards. Quick rounds when you do not want to flip cards. Rounds earn XP too.
• 10. Daily plan and streak, and the loop repeats. A plan for today, and a streak that keeps you going. A plan for today on one screen. A streak that keeps you going. Then back to step 2 with your next topic.

Scenes use sample names and sample data.

How it works · 10 steps

• 1. Paste notes, get a deck. Paste your notes. Voo drafts the deck. Paste notes or upload a PDF, or import up to 10 files at once inside a course folder. Voo drafts the cards. You edit them. Add the deck to a unit when it is ready.
• 2. Plan the unit and assign it. Plan the unit. Voo drafts, you decide. Assign it with a due date, or choose when it posts. Voo drafts a unit plan. You decide what stays. Assign to your sections with a due date. Or choose when it posts.
• 3. Warm-up you review before it posts. Voo drafts Monday's warm-up on Friday afternoon. It posts only if you approve it. Preview it as a student first. Nothing is saved.
• 4. Run Live with the projector page. Host a Live game for the whole room. Pause, skip a question, extend time or lock the room. The Projector view shows the top 5, the top 3 or none.
• 5. Exit ticket. An exit ticket shows Got it, Almost and Not yet for the class. A short check at the end of a lesson. See Got it, Almost and Not yet for the class. Students see only their own result.
• 6. See who is struggling. See who is struggling, and on what. Flags show which students need help. A topic heat map shows which topics.
• 7. Tutor per topic, then a Quick check. Recommend a tutor on the topic, then send a short Quick check. You approve the check. Point students to a tutor already shared with your class. Cardvoo drafts a short Quick check. You approve it first. You see the Quick check result, not whether an individual student opened the tutor. AI can make mistakes, so check facts that matter.
• 8. Reteach tomorrow. Tap Reteach tomorrow to draft a reteach set and a warm-up for you to review. Tap Reteach tomorrow. Cardvoo drafts a reteach set and a warm-up for you to review. Students see nothing until you approve it. Reteach sets use the Educator plan's AI.
• 9. Review queue: you approve the AI draft. Voo drafts feedback on written answers. Students see nothing until you approve it. The Review queue on Home collects the drafts waiting for you.
• 10. Prep and summaries. Print a prep sheet, read a Weekly summary. Print a Meeting prep sheet for yourself before a parent meeting. Cardvoo does not send class information to parents. A Weekly summary of your classes on Friday afternoon, in the app and by email.

Scenes use sample names and sample data.

• Spaced repetition schedules each card for review right before you would forget it.
• Free plan: unlimited flashcards, with AI card generation that runs on your own device.
• Study to Earn: 4 reviews rated Good or Easy earn 1 more run of Learn, Test or mini-games.
• Headline features: Ask anything, Guided Learning, Visual aids.
• Mini-games: Fact or Bluff, Speed Grid, Two Truths & a Lie, Flashcard Connections, Concept Taboo, Charades, Weak-Spot Blitz, Recall Race, Cardvoo Live.
• Standard ($5.99/mo) and Pro ($12.99/mo) add cloud-quality AI and higher run limits; Pro adds Podcast, Walk & Recall, Charades and Snap & Occlude.

Student questions

How do I join my teacher's class?

Sign up free, then enter the class code your teacher gave you. Your teacher approves the join, and the class decks and due dates show up on Home. Classes are for students 13 and up.

What if I need more time or a bigger font?

Ask your teacher to set extended time. Larger text, read-aloud, reduced motion and high contrast are in Settings and in the lobby before a game.

Does a grad student qualify?

Yes, with a school .edu address and a graduation year.

I'm an alum with an .edu address.

The graduation year decides. Past years aren't eligible, and you can pick a year up to 7 years ahead.

My school has no .edu email.

Use the ID photo or class schedule option. A person reviews it, and the file is deleted as soon as the review is decided.

I switched schools.

Verify again with your new address.

Can I use a referral code too?

A referral discount can't be combined with the student discount on the same checkout. At checkout you choose which one to keep.

What happens when it ends?

Your plan keeps going. At the next renewal after your verification ends, the price goes back to the regular one. Re-verify before then to keep the student price.

Start with one deck.