피터패터: An English Word Deck from A1 to C

Field notes

피터패터 divides its vocabulary into seven CEFR-labelled tracks, from A1 through C³, with each track split into daily units of roughly 50 cards. The page says searches can resolve inflected forms such as “went” to “go” and “children” to “child.” Card reviews use a temperature metaphor backed by FSRS scheduling, while pronunciation and spelling can be set to American or British conventions.