Lexilogio is free and will stay free — no ads, no premium tier, no locked features. If it helps you learn and you'd like to chip in for the server costs, a small donation via PayPal is warmly appreciated.
Suggested: €2 a year. Completely optional — donating changes nothing about what you can use.
Donations are voluntary gifts to the person running this site and grant no rights to specific services or features (see the Terms). Payments are handled entirely by PayPal — Lexilogio never sees your payment details.