Should I use Kotlin or Java for Android app?

Kotlin is better for: Apps that need to maintain platform independence and be cross-compiled for multiple platforms as well as Android . Kotlin can perform these functions while Java cannot due to its use of bytecode which can only compile code for one specific platform at once.26 Eki 2021

In two years, Kotlin has become a more stable and congruous development option for Android Studio. … There are definite limitations within Java that impede Android API design. Kotlin is inherently lightweight, clean and far less verbose, especially in terms of writing callbacks, data classes, and getters/setters.

Is Kotlin enough for Android development? Yes . You can build Android applications using only Kotlin, and as documentation, tooling, and libraries become more Kotlin-focused, building apps exclusively with Kotlin will become even easier.26 Nis 2021

Kotlin is fully supported for Android development with tools and resources to help you succeed.