Improvements It's a good learning platform, however there is a bunch of ambiguous questions with unclear answers or questions with wrong andwers in React js where there is said to remove the App.js file.

Kotlin Core - Very usefull The teaching method in Hyperskill is great. First you select a project and you start learning topics about the project. In the topics there is two step. Technical and practical. After reading article about the topic you solve some problems about it. After finishing all topics you start writing codes about your project. This way is so usefull because you make lots of practice about topics and it makes you learn them permanently.

No daily life replenishment The app started out great, it was quirky, fun, and intuitive. I was planning on using this daily. About the 2nd or 3rd day I got a few questions wrong, and eventually spent my daily lives limit. Came back the next day enthusiastic and the lives never replenished! I figured it was a glitch. 3rd day, same result, no more lives. I waited a week and still nothing. So I uninstalled the app

Its Java tracks provide a good theory… Its Java tracks provide a good theory explanation better than any other websites.

My opinion. Please find below my opinion. 1- The course organization is very good. 2- The absence of videos and the focus on reading helped me achieve better understanding. 3- The reading time for each step is acceptable. 4- The course maintains good quality. 5- The practice section is also very good.