We don’t sell or share your data – no ads, no third parties, no trading your activity.
We collect only what’s needed – an email to log in and your vocabulary with progress, so the service works and syncs.
Data is protected – transfer is encrypted (HTTPS), passwords are never stored in plain text.
Analytics are anonymized – our own, no third-party counters. A visitor is a hash of address and browser salted per day: the salt changes with the day, so yesterday’s visit cannot be linked to today’s. Raw addresses are never stored.
Cookies – minimal – only technical ones: login, session and a mark that this visit has already been counted. Everything optional is off by default.
You own your data – export the vocabulary anytime; delete the account, delete the data.
Build your own dictionary
Bring a word you have already met into KYW – and it stays with you.