Great app to help you become an Android developer.
I am a lecturer at a vocational training center. I wrote this app for my dear students.
Just study hard every day for 45 minutes, you will become a great programmer with a high salary. This application is written in Kotlin, Java, C++ languages and is publicly available on Github social network.
My entire course has been wrapped up in a single app called Android Base Project. Hope it will be of great help to you.