SPACED REPETITION · FSRS
Review the moment before you'd forget.
Cramming fades. Our scheduler is built on FSRS — the open Free Spaced Repetition Scheduler — which models your personal memory and surfaces each question at the exact point retention starts to drop. More retained, fewer reviews.
- Models your memoryFSRS predicts your recall per card, not a fixed interval
- Perfectly-timed reviewsScheduled at the dip — right before you'd forget
- Up to 40% fewer reviewsSame retention, far less time at the desk
Retention over time
Air Law · 1,240 cards tracked
With FSRS Without review Scheduled review
Due today24 cards
ICAO Annex 8 — C of A validity
Air Law · seen 3×
CG envelope — forward limit
Mass & Balance · seen 5×
Adiabatic lapse rates
Meteorology · seen 8×
SEE IT IN ACTION
Watch smart revision in 90 seconds.
A quick walkthrough of the retention chart, the daily review queue, and how FSRS times each card — before you try it yourself.
Coming soon