The main thing learners utilizing comprehensible input need is volume, so if you actually want to make it useful as more than a one-off novelty, your priority kind of needs to be in pumping out the content (while keeping it relatively interesting since that's also important). That's really the hard part. I will also say that I'm not personally convinced that "here's the words you heard, now tap them in order" minigames are very helpful. Other than that, the features and functionality are nice. Reminds me of Duolingo stories, which is their best content IMO.

Thanks a lot, I appreciate the feedback! Indeed, Duolingo Stories are the part of Duolingo I enjoyed the most too.

Taping words: I sometimes find it useful to focus my listening and try to recognize the words. But I'm not sure about the design here and maybe I should disable it by default. Thanks again!