Turn any lesson into flashcards, practice, and a live quiz.
Paste slides, notes, documents, or a YouTube lesson. Hippo turns it into flashcards — then brings each card back just before students forget it.
Here's the deck Hippo drafts from one lesson — ten cards, ready in minutes.
How Hippo works
Teach it once. Hippo helps them keep it.
Lesson material becomes class-ready flashcards, the same deck plays as a live quiz, and the results show you what to reteach tomorrow.
- 1
Bring one lesson
Slides, notes, documents, YouTube, pasted text, or cards you write yourself.
- 2
Get a deck in minutes
Hippo drafts flashcards and quiz questions from your material. Edit any card, or write your own from scratch.
- 3
Students remember
Students retrieve first, then rate themselves honestly. Hippo brings each card back at the moment it's about to be forgotten — so the lesson is still there next month, not just next period.
Built on decades of retrieval-practice and spaced-repetition research. - 4
Play live, revisit tomorrow
The same reviewed deck becomes a live quiz, then a clear picture of what to reteach tomorrow.
Teacher review
Drafts become class practice only after you approve them.
You can approve, edit, simplify, skip, or write your own flashcards. Students only see the shared deck after review.
- Nothing reaches the class without your approval
- Write your own cards alongside Hippo's drafts
- Students can keep private personal decks
- Practice evidence, never automatic grades
Student practice
Remember first. Support when it helps.
Students try to remember before revealing the answer. After reveal, the answer, easier-wording support, and the rating buttons stay close together.
Honest self-rating: No idea, Still learning, Got it, Too easy.
Easier wording: Need easier wording? appears after the student has tried the card.
Live quiz game
The quiz gives practice a reason to matter tomorrow.
The same reviewed deck becomes a live quiz — same cards, nothing new to build.
Nicknames, avatars, a podium — the end of the round on the class screen.
After the round, you see exactly who got it — and what to reteach tomorrow.
18 / 24got it right
Six students mixed up chloroplasts and mitochondria — that's tomorrow's starter question, not a grade in a book.
Classroom-friendly, school-aware
Less to build. More that lasts.
You get a faster route from lesson material to practice. Students get practice that sticks, live play, and their own private decks.
Built on learning science. Students remember more when they practise remembering — Hippo explains the research in plain English, and answers privacy and data questions just as plainly.
Your first week
Create a class and a deck of 10–20 cards on something you're already teaching. Assign it.
Students join and study on their own. Hippo starts spacing each student's reviews.
Run your first live quiz — 10–15 cards, around 15 minutes. Read the report.
Your time, all week: about 30 minutes — roughly 15 to make the deck on day one, and 15 of class time for the quiz. See the full first week →
Ready for tomorrow's lesson?
Try Hippo with one lesson you already have.
Free during early access. Used in real classrooms since February 2026 — and students can keep private decks of their own.