Duolingo 10th Anniversary Logo

10th fun green entertainment Source: https://x.com/duolingo/status/1534601160992165889

A logo is a tool and the design of that tool depends on where and how you need to use it. This logo is a perfect example of that given that the vast majority of people who see this logo will be the millions of users of this popular app. So their logo took on the form of a square, fun shape featuring their popular mascot so it could be used as an element within the app like badges and awards. It's such a smart move.