Theres a million ways to learn a language, whether thats group or 1:1 classes, speaking with a partner or family member, watching TV or reading books.
The inescapable fact is that sooner or later youll need to learn the words.
Via spaced repetition, using the FSRS algorithm, Learn The Words teaches you words in Catalan from most to least common.
This means youll always be learning the most useful words first.
If you already know some words you can select your existing progress.