@marina Thanks for the reply and work with Lingvist! Regarding the streaks, I was refering to something like Duolingo's streak feature that tracks how many days in a row you've met the daily goal. Once your streak gets longer, you can get a fear of loosing it that helps motivate you to practice on those days when you don't really feel like it. That fear of loosing a streak wouldn't work for everybody, especially since it's just a number, but for some it really does help motivation a bit.