Learn anything.
Actually remember it.
Lostbae is a spaced repetition learning platform that uses AI to turn your notes, articles, and videos into flashcards — then schedules reviews at the exact moment you're about to forget them.
10×
better retention vs passive re-reading
5 min
to generate a full flashcard deck
Free
to start — no credit card needed
Everything you need to remember more
Built on decades of cognitive science research, with a modern AI layer on top.
AI-Powered Flashcards
Paste any content and our AI instantly generates high-quality flashcards from your notes, articles, and documents.
Spaced Repetition
Our algorithm schedules each card at the optimal moment — right before you forget — so every review counts.
Active Recall
Stop re-reading. Active recall through flashcard quizzing is proven to dramatically outperform passive study.
Import Anything
Bring in content from Google Docs, YouTube videos, web pages, or plain text. Lostbae handles the rest.
Track Your Progress
See exactly how much you know, what's due today, and where you need more practice — all in one view.
Smart Review Sessions
Each session adapts to your performance, prioritising the cards most likely to slip from memory.
Use it everywhere
On your desktop, or any browser
Install the native app for macOS or Windows, or just open it on the web — your library stays in sync everywhere.
Ready to actually remember what you learn?
Create your free account and import your first document in under two minutes.
Get started — it's free