Duolingo isn't just about helping people learn languages anymore. The company has released Duolingo Math on iOS, over a year after it first teased the app. Naturally, Duolingo Math shares a lot of DNA ...

Add Yahoo as a preferred source to see more of our stories on Google. Duolingo, a quick-and-easy learning app that boasts more than 128 million monthly active users worldwide — mostly for its language ...

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