Your Messages app can perform equations and conversions with ease.

Duolingo is moving beyond language learning for the first time with an app that offers elementary math lessons and a brain training course for adults.

Duolingo, a quick-and-easy learning app that boasts more than 128 million monthly active users worldwide — mostly for its language offerings — has expanded into mathematics with elementary and middle ...

Senior Software Engineer Sammi Siegel explains why the Pittsburgh tech company is expanding from language learning to math practice, and how the new app was developed.