Saturday, May 3, 2025

Top 8 Free Courses to Learn Kotlin in 2025

Before we get to the 7 best free courses that will teach you everything you need to learn about Kotlin, let me tell you what it really is. It was way back in May 2019 that Google announced something we all had known inside for a long time. Kotlin had become the most popular programming language for Android app developers. The main advantage that Kotlin has over other programming languages is the fact that it is really simple and concise. It requires less programming, less testing, and less maintenance. These days, Kotlin has firmly dethroned Java as the go-to programming language for Android app developers. But Kotlin has even bigger goals. It aims to become the preferred programming language for multiple platforms, including iOS.


You can basically think of Kotlin as an open-source programming language that can be used across different platforms. Kotlin was created by JetBrains and first appeared way back in 2011. But it took almost 5 years for it to gain a considerable level of popularity.

Another important feature of Kotlin is its interoperability with Java. It is also one of the main reasons why all the developers love Kotlin. What this means is that your existing codebase written in Java can interact and work with Kotlin.


8 Best Free Online courses to learn Kotlin in 2025

Here we have compiled a list of the 7 best free Kotlin courses. Keep reading to find out more.

1. Simple Android App Development Using Kotlin [Udemy]

This is a wonderful course that will teach you everything you need to know about Kotlin along with modern Java from absolute scratch. In this way, it is absolutely perfect for complete beginners. It is a perfect starting guide for beginners looking to enter the amazing world of Kotlin. 

Course Duration: 3 hours
Course Rating: 4.6 stars out of 5
Course Instructor: Ridwan Marquis
Course Price: Free

In this fantastic course, you will learn about all the core features of the Kotlin programming language. You will also become a very advanced developer in Kotlin. You will be able to master the Kotlin web framework and work with different databases. 

Course Duration: 2 hours
Course Rating: 4.6 stars 
Course Instructor: Alexey Soshin
Course Price: Free

By the end of this course, you will become an expert Kotlin developer. 

This course will act as a great brief introduction to the amazing world of Kotlin. It is perfect for beginners as you will learn about Kotlin from absolute scratch. You will learn exactly what Kotlin is and why is it used. The course will teach you everything you need to know about functional and class-based components in Kotlin. 

Course Duration: 2 hours
Course Rating: 4.5 stars out of 5
Course Instructor: Ricky Wahiawa
Course Price: Free

This is a great course that will help you take your state management skills in Kotlin to another level. You will be able to do this by learning about the nullable, not nulls, and other platform types rather than the traditional React. The course will teach you how to manage the state using the redux toolkit. You will also learn how to use the call operator, Elvis operator, and safe cast operator. 

Course Duration: 2 hours
Course Rating: 4.4 stars out of 5
Course Instructor: Skill Centric
Course Price: Free

In this fantastic course, you will learn everything you need to know about the different components of Kotlin and Java. You will start the course by learning about the basics of Kotlin. Then you will move to understand what exactly is Kotlin. By the end of this course, you will be able to create a very simple but efficient web app using Kotlin. 

Course Duration: 2 hours
Course Rating: 4.5 stars out of 5
Course Instructor: Tutlets Kang
Course Price: Free

This is a wonderful course that will teach you everything you need to know about Kotlin along with modern app development from absolute scratch. In this way, it is absolutely perfect for complete beginners. It is a perfect starting guide for beginners looking to enter the amazing world of Kotlin. 

Course Duration: 3 hours
Course Rating: 4.6 stars out of 5
Course Instructor: Crimson Altima
Course Price: Free

In this fantastic course, you will learn about all the core features of an amazing and simple programming language. You will also become a very advanced developer in Kotlin. You will be able to master both Kotlin and Java. By the end of this course, you will become an expert Kotlin developer. 

Course Duration: 2 hours
Course Rating: 4.6 stars 
Course Instructor: Rajan Singh
Course Price: Free



8. Learn Android Application Development [Udemy]

This fantastic course will help you polish your Kotlin skills. You will be able to do this by installing the Android Development Studio and then using it to debug an Android application. 

Using this exciting course, you will be able to learn the fundamentals of the Kotlin programming language. You will also be able to start your amazing journey by making use of this amazingly simple programming language. 

Course Duration: 1 hour
Course Rating: 4 stars out of 5
Course Instructor: ProgramMe Programming
Course Price: Free


Conclusion

If you liked this list of the 8 best free courses that will teach you everything you need to know about Kotlin, feel free to share it with your friends and family. I have no doubt that the courses in this list will transform you from a complete novice to a Kotlin expert within a matter of weeks. 

You can also drop a comment if you have any doubts related to the Kotlin programming language and we will get back to you as soon as possible. 

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