Duolingo has replaced its heart system with an ever-decreasing store of energy, which can limit your access to lessons even if you don't get anything wrong. What's worse is that you can buy more ...

Learning a new language requires a lot of time, but not necessarily a lot of money. Whether you're traveling to a foreign country or studying for a class, these are the best free language learning ...

Homescreen Heroes: Duolingo is the complete language learning app for beginners and pros alike ...