There are a few reasons ‌Kotlin is gaining popularity among Android app developers.
First, Kotlin is statically typed, which catches errors and potential bugs in your code as you write it.
Second, Kotlin is interoperable with Java. You can use Java libraries in your Kotlin code and vice versa. If you're already familiar with Java, learning Kotlin will be a breeze.
Finally, the Android development community has firmly embraced Kotlin. You'll find plenty of online resources, tutorials, and support forums to help you get started with Kotlin programming.