My journey of becoming an iOS developer begins in the summer of 2019. Back these days, I did not know anything about programming at all, so it was hard for me even to understand the most straightforward code. As a big fan of Apple, I decided to learn something related to iOS; therefore, I chose to learn Swift. Since there were a lot of tutorials on YouTube, I decided to start learning there. After a week of intense studying, I gained fundamental skills, which allowed me to enroll in Udacity Nanodegree program. With every new project, the difficulty increased. Luckily, my motivation allowed me to complete it successfully in less than three months. With all the experience that I got from this program, I decided to build my first complex app. Since I've always wanted to build my own messenger, I decided to create it as my portfolio app. Due to the fast speed and flexibility of Firebase Database, I was able to create a complex friend network for messenger users. Besides that, users receive data almost instantly, which makes a messaging process more enjoyable. Also, mChat uses a Mapbox API, which allows users to choose custom-designed maps. Overall, this messenger presents a modern design with lots of animations and custom chat color designs.