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.

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.

But iOS 18 upgrades your Messages app so that it can solve tricky equations without your Calculator app, and it doesn't need Google to look up conversion rates, either.