I have a 1 day streak on Busuu and am about to end my Duolingo streak at over 1100 days. I realize reading what I just wrote that Duolingo gets you to focus more on staying engaged with the app than learning the language(s). I never found a good replacement for Hawaiian from Duolingo, but I got to the point where the lessons were voiced by (bad) text-to-speech, and the phrases were super strange.



