Spaced repetition for the chapter you’re studying.
Hemle turns your chapter into concepts you can practise, then brings each one back just before you’d forget it. Answer well and it waits longer; struggle and it comes back sooner.
One concept, scheduled
After one lesson and one quiz on Lesson 1 of CDC’s Principles of Epidemiology, Hemle drew this concept’s memory curve and set its next review.
100%Oct 14
Stays above 90% until Oct 16. Review then and it holds until about Oct 26.
Scheduled per concept
Each idea in your chapter keeps its own schedule, so what you know well stays out of the way.
No cards to write
Hemle builds the concepts and questions from your file; you spend the time studying.
You can see why
Each concept’s memory curve shows how well you’re likely to remember it, when it’s due next, and how long a review would make it last.
How it works
Drop in your chapter
A PDF, Word file or PowerPoint deck, up to 20 MB. Until you have an account, it waits in your browser.
Practise a concept
Answer a few questions on it, and say how sure you are.
Hemle sets the next review
It estimates how well you’ll remember the concept and brings it back before that falls too far.
How to make spaced repetition work
Little and often
Short sessions most days beat one long session a week, because each review lands just as an idea starts to fade.
Do reviews when they’re due
A review done early teaches little, and one done far too late is starting over.
Be honest when you guess
Say when you weren’t sure. A lucky guess counted as knowing comes back too late.
Keep the source close
When a review goes badly, reread the page before you try again.
Common questions
What is spaced repetition?
A way of reviewing on a schedule: each idea comes back just before you’d forget it, and every good recall pushes the next review further out.
How does Hemle decide when to bring a concept back?
After you practise a concept, Hemle estimates how well you’ll recall it and schedules the next review before that falls too far. Answer well and it waits longer; struggle and it comes back sooner.
Do I have to make my own cards?
No. Hemle builds the concepts, questions and flashcards from the chapter you upload.
Do flashcards count toward the schedule?
No, practice does: answering questions on a concept is what sets its next review. Cards are for going over it whenever you like.
Where do I see what’s due?
On Today, the page you land on when you sign in. It shows the reviews that are due.
Is Hemle free?
Your first chapter is free, and you don’t need a card to start. Paid plans lift the limits when you want more.
More from Hemle
Upload a textbook to AI
Ask your chapter anything; every answer names the pages it comes from.
PDF to flashcards
Flashcards from your chapter, each naming the page it came from.
PowerPoint to flashcards
Flashcards and a quiz from your lecture slides, each naming its slide.
AI quiz generator
Multiple-choice questions on your chapter, with an explanation for every answer.
The AI tutor
A real session on the same chapter: Hemle teaches it and cites the page as it goes.