Why: I enjoyed playing mobile racing games so I had some knowledge about them. I believed this concept could be developed much further if I wanted. I also knew that I could easily create good IAPs to try to make money.
Tools: Unity (game engine), C# (language used in Unity), PHP (backend), MySQL (database)
Reason to quit: The small absolute number of downloads discouraged me to invest more time in fixing bugs and developing further. This wasn't a good reason to quit and later I regretted not continuing to see its full potential.
What I learned: Growth is more important than absolute numbers and the number of downloads isn’t a good metric. This is the first app where I got feedback by sending cold messages to people on Slack. I learned the importance of app store optimization (and in general visibility) and how to do it effectively.