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What is the most popular Android development language in 2021

Are you an android developer looking to create your next big hit app? If so, you’ll need to know which programming language is currently in vogue. While there are several options available, one language stands out from the rest – Kotlin. In this article, we’ll explore why Kotlin has become the most popular Android development language of 2021 and why it’s worth learning for any aspiring android developer.


Kotlin is a relatively new programming language that was developed by JetBrains in 2010. It was first introduced as an experimental language in 2011, but quickly gained traction among the development community due to its concise syntax and interoperability with Java. Kotlin’s popularity has grown exponentially over the past few years, with Google officially announcing its support for the language in Android Studio in 2018.

Why Kotlin?

Kotlin’s rise to prominence can be attributed to several key factors. First and foremost, it offers a concise syntax that makes code easier to read and write. This is especially important for android developers who often have to work with large amounts of code. Secondly, Kotlin is fully interoperable with Java, meaning that developers can use both languages together in their projects. This allows them to take advantage of the best features of both languages while minimizing the learning curve.

Kotlin also offers improved performance and memory management compared to Java. This is because Kotlin compiles directly to bytecode, which means that it doesn’t need to be interpreted like Java does. This results in faster execution times and reduced memory usage. Additionally, Kotlin’s type system is more powerful than Java’s, allowing for better type checking and fewer runtime errors.

Case Studies

There are numerous case studies that demonstrate the effectiveness of Kotlin in android development. For example, Intuit QuickBooks, a popular accounting software company, used Kotlin to rewrite their Android app from Java to Kotlin. They reported a 30% reduction in code size and a 25% increase in performance. Another case study involves Uber, which used Kotlin to rewrite their Android app from Java to Kotlin. They reported a 40% reduction in code size and a 30% increase in performance.

Personal Experiences

As an android developer myself, I can attest to the benefits of using Kotlin. When I first started working with the language, I was initially skeptical about its usefulness. However, after experimenting with it for a while, I became convinced of its many advantages. Not only did Kotlin’s concise syntax make my code easier to write and read, but it also offered improved performance and memory management. Additionally, Kotlin’s type system allowed me to catch errors early on in the development process, which saved me a lot of time and hassle down the line.


In conclusion, Kotlin is the most popular Android development language of 2021 for good reason. Its concise syntax, interoperability with Java, improved performance and memory management, and powerful type system make it an ideal choice for android developers looking to create efficient and robust apps. With its growing popularity among the development community, it’s clear that Kotlin is here to stay, and that any aspiring android developer should consider learning the language.