DuoLingo, the popular language learning app for iOS, has now launched for Android devices.
DuoLingo currently offers lessons for learning Spanish, German, French, Portugese and Italian. English can also be learned with Spanish, French, Italian or Portuguese as the base language.
One of the main reasons for DuoLingo’s popularity on iOS is the way in which it gamifies the learning experience. The service is completely free and features no ads; it makes its money by providing a translation service, which is powered by its users.
Interestingly, the creator of DuoLingo, Luis von Ahn, is the guy who created ReCAPTCHA, which helps to digitize books. There’s a good TED Talk here that explains the business model for ReCAPTCHA and DuoLingo. It’s a funny presentation – we’ve all seen an inappropriate CAPTCHA or two.
DuoLingo is currently available for Android smartphones with a tablet version of the app due to launch very soon.