Kotlin is a modern programming language for Android, created by the developers from the company Kotlin. It's a perfect match for Android devices, with its simple and intuitive syntax.

With Kotlin, you can write much cleaner code than in any other language.

The best thing about Kotlin is that it's a completely safe, non-mutating, language for Android. This means that you can run your app on your phone without any worries. It's also a perfect match for Android developers, with its intuitive and simple syntax.