KYW
Completely free

Learn words. And don’t forget them.

KYW is the site that helps you keep your words in memory. An algorithm that measures accuracy and speed schedules reviews so you come back to a word right before you forget it. Keep your word — and keep learning languages. No ads, no selling your data, free.

Before signing up you can explore the whole app — just use “Try KYW” below.
Try it

Just try it yourself and decide

Pick a language and level — we’ll create a trial account for you with a ready vocabulary and stats. The full app is available in it. Progress isn’t saved: for that you’ll need your own account.

Level
Language to learn
Demo word banks are ready for English, Spanish, French and German — more languages are coming. Registered accounts have no language limits: add any language you like.

About KYW

Everything worth knowing — the algorithm, tips, privacy and more.

KYW