This section contains general questions.

Who created Duolingo?

Duolingo was created by Luis vohn Ahn , Severin Hacker, and the rest of the Duolingo Team.[1]

Where can I get help?

What is Duolingo's business model?

Duolingo makes money by using the Duolingo Test Center and other methods.[2]


How often do new updates to the service come out?

According to staff member Tyler Murphy (as of September 3, 2014):[3]

[W]e are trying to get new updates out every 3 weeks or so and have been keeping pretty well to that, features are added and removed in each update but if we are measuring correctly, the ones that stick should be the ones that have great effects, and will get us to impact people's lives like no education service has before.

Why doesn't Duolingo have X as an optional feature?

According to CEO Luis von Ahn:[4]

If we did this, there would be a menu with hundreds of options to chose from, making Duolingo quite confusing, and also very complex to maintain from an engineering point of view.

I have feature X but my friend doesn't (or vice versa). Why?

Duolingo is constantly trying to improve itself.[5] One of the ways it does this is by testing experimental features on a subset of its users before rolling them out to everyone. This way it can tell whether a feature is actually an improvement or not before it commits to it[6]. That's why you will sometimes have a feature that your friends don't have or vice versa.

I had feature X but don't anymore, why?

Duolingo tests and removes features that are not useful or fail their tests. Some features may be removed temporarily while they are being improved.[7]

This FAQ doesn't answer my question. Where else can I find answers?


  4. Recognition vs Recall,$comment_id=1152000
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