Never forget
what you've learnt
When you complete a lesson, the SM-2 algorithm ensures the material reappears — just before you would forget it. Scientifically proven.
The forgetting curve is real
Without revision, we forget up to 80% of new material within a week. With spaced repetition, you can remember it for months — even years.
Without revision
80% forgotten after 7 days. The material disappears from memory, and the student must start over.
Random repetition
50% retention. Better than nothing, but inefficient — you practice things you already remember.
SM-2 spaced repetition
90%+ retention. The algorithm finds the optimal time for revision of each topic.
It happens all by itself
Complete lesson
When you're done, a revision card is created automatically.
First revision
Next day: it appears in your revision queue.
Self-assess
Got it right? The interval increases. Wrong? You'll see it again tomorrow.
Intelligent intervals
1 day → 3 days → 7 → 14 → 30 → 60 days. Adapted to your memory.
Your personal revision queue
On your learning page, you can see how many topics are ready for revision. Colour-coded: overdue is orange, today's are green.
- Automatic queue based on SM-2
- 5-10 topics per session
- XP reward for each revision
- Snooze function for busy days
Class revision health
See which students are keeping up with revision — and who has accumulated overdue topics.
- % students with overdue topics
- Average completion rate
- Students with most overdue
- Add manual revision
New study tools
Inspired by Sparx Maths and Seneca Learning — now integrated into your revision.
Memory strength badge
Each topic gets a visual indicator — green, yellow, or red — based on the SM-2 algorithm. You can see instantly what needs revision.
Retrieval Practice
Timed flashcard quizzes with 15 seconds per question. Active recall is the most effective method for strengthening long-term memory.
Stop forgetting — start remembering
Intelligent revision is included in all subscriptions.
Get started free