Sources and Licenses
Level structures come from external sources. Meanings, examples, and translations are platform-generated.
Word list resources
| Language | Level Structure | License and Attribution |
|---|---|---|
| Turkish | wordfreq (CC BY-SA 4.0) frekans listesi + Claude lemmatizasyon | wordfreq, CC BY-SA 4.0 — Robyn Speer |
| English | Oxford 3000/5000 (A1–C1); C2 frekans türevi | Oxford University Press kelime listeleri |
| French | FLELex-CRF (UCLouvain CEFRLex) — 17.871 lemma, CEFR dereceli | FLELex, CC BY-NC — François, Gala, Watrin & Fairon (LREC 2014) |
| German | Goethe-Institut Wortliste (A1–B1) + wordfreq türevi (B2–C1) | Goethe-Institut Wortliste; wordfreq, CC BY-SA 4.0 |
What comes from external sources?
From external sources only: lemma, CEFR level, part of speech, German article/plural. Definitions, examples, explanations are not from sources.
Meanings, examples, translations, grammar explanations, and quizzes are AI-generated; report errors to improve.
License note
FLELex is available under CC BY-NC for research and educational use; this platform is free and generates no revenue from content. wordfreq data is CC BY-SA 4.0 and is used with attribution as noted above. Goethe-Institut Wortliste is a copyrighted publication; only lemma, article, and plural forms are used from it. Oxford lists are copyrighted by Oxford University Press and used in the same manner.
Not legal advice. Copyright holders can contact us to request content removal.
Open Source Components
Built with Django. Uses wordfreq for word frequencies, PyPDF2 for PDF reading, and polib for catalog operations. All are distributed under their own open source licenses.