Being on a streak is addictive. You don’t want to break it. That’s so smart that Duolingo has it as a feature. And not only that, after each successful session you get reminded that you are on a streak. That probably is one of the reasons why Duolingo is successful and why so many people keep coming back using the app every day including me. Here is actually a comment from somebody who finished Duolingo Spanish tree and the Duolingo app was the only that the person used consistently every day for a whole year.

Here are the numbers for yesterday (total 48 minutes):
14 Duolingo
24 Coffee Break Spanish podcast 45
10 Memrise

Till tomorrow!