Working code that shows how to use the Kotlin language in your Android apps.
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Now in Android is a fully functional Android app built with Kotlin and Jetpack Compose. It models Android design and development best practices and was designed to be a useful reference for developers.
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Headspace's Android reboot increases monthly active users by 15%

In order to launch new features on their Android app, Headspace spent 8 months refactoring their architecture and rewriting in Kotlin. Learn how this reboot helped their business grow.

    SmartNews reduces lines of code by 20% and improves team morale with Kotlin

    SmartNews helps millions of people discover their world everyday by sharing timely news from a diverse set of news sources.

      Twitter increases developer productivity and code reliability with Kotlin

      Twitter is one of the most widely used social media platforms where users can see what’s happening in the world at any given moment.

        Google Home reduces #1 cause of crashes by 33%

        The Google Home app helps set up, manage, and control your Google Home, Google Nest, and Chromecast devices—plus thousands of connected home products like lights, cameras, thermostats, and more.

          Duolingo completes migration to Kotlin and reduces its line count by an average of 30%

          Duolingo is one of the most popular language learning platforms in the world, and one of the most-downloaded free education apps on Google Play, with more than 200 million downloads.