Sources & credits

Sentences

Some sentences and their translations are derived from the Tatoeba Project, used under CC BY 2.0 FR.

Individual Tatoeba contributors hold the copyright in their sentences. Sentence text is used as written; only the selection, the pairing and the difficulty banding are ours.

Word-frequency lists used to band difficulty come from hermitdave/FrequencyWords (MIT), derived from OpenSubtitles. They are used when content is prepared and are not part of the app.

What the tiers mean

learnpeat has five tiers, from Foundations to Confident. They are a rough ordering of difficulty within learnpeat’s own material — nothing more.

Difficulty is estimated from how rare the vocabulary is, how long the sentence runs, and how many clauses it contains. That catches something real, but it misses most of what makes language hard: idiom, register, irony, and holding an argument together across paragraphs. A tier is not an assessment, and reaching Confident does not mean you would pass anything.

Exams

JLPT, TOPIK, HSK, DELE, DELF, DALF, Goethe-Zertifikat, CILS and CAPLE are trademarks of the organisations that run them. learnpeat is not affiliated with, endorsed by, accredited by, or connected to any of them, and it does not prepare you for, predict, or substitute for any of their examinations.

Software

Scheduling uses ts-fsrs (MIT), an implementation of the Free Spaced Repetition Scheduler.