Named one of Google Play's “2013 Best of the Best” apps, Duolingo is changing the way people learn languages. Available on the web, Android, and iPhone, Duolingo makes learning Spanish, German, French, Portuguese, Italian, and English (with more languages on the way) fun by turning the process into a game. You're given chunks of text to translate and you receive badges when you complete your lessons. If you answer incorrectly, however, you lose hearts. You can also connect your Duolingo account to Facebook so you can compete with your friends.
Duolingo is 100 percent free – there are no ads or hidden fees. This is possible because users create value by translating real-world documents (and learn a new language at the same time). Backed by Union Square Ventures, NEA, Ashton Kutcher, and Tim Ferriss, Duolingo was found to be more effective than university-level language training. Duolingo has also been lauded by PC Magazine and The Wall Street Journal.