Ferman, is a project I started while learning ReactJS and GraphQL. During its development I learned a lot of new cool stuff, as it was my first commercial-like project that reached to a quite impressing point (for my then-standards).
I've also implemented the basic functionality of Ferman on a mobile app built with React Native and Expo -- that was my introduction to mobile hybrid development.
You can find the whole Ferman project on GitHub.