I used the Fluent Forever app to acquire about 1,000 Italian words in one year. Agree that it wouldn't win awards for polish (maybe Polish), but it fairly faithfully implements the method described in the book, which is roughly: make your own flash cards, using memorable imagery, from curated word lists designed for forming a wide range of sentences, and then study these using spaced repetition. You also get the ear training audio cues.
You can do it all yourself with Anki, indeed the author of the method started that way, but I am happy to not have had to pay the Anki usability tax.
Even if you don't use the app/method, the book (of the same title) is a quick and useful read about tricks used to optimize language acquisition.
You can do it all yourself with Anki, indeed the author of the method started that way, but I am happy to not have had to pay the Anki usability tax.
Even if you don't use the app/method, the book (of the same title) is a quick and useful read about tricks used to optimize language acquisition.