KYW

Acknowledgements

FSRS and open-source, credited honestly.

KYW stands on the shoulders of open projects, and it’s a pleasure to say so.

FSRS – the Free Spaced Repetition Scheduler, a community-maintained memory model. It schedules your reviews.
SuperMemo & Anki – the spaced-repetition ideas it all grew from.
The language-learning community – for word sets, bug reports and ideas.

Thanks to everyone who keeps knowledge open.

Build your own dictionary

Bring a word you have already met into KYW – and it stays with you.

KYW – A spaced-repetition trainer for your own words