I've been working on one for ages now and it's great fun to work on something where I'm driving the requirements and the code. It's a cycling route planner web app. Problem is now I'm a dad of twins, progress is so slow that I want to rewrite the JS in ES6, but I also want to get the new features done too. My recommendation is don't do what I used to do and do paid side projects you don't enjoy for not a lot of money. Do it for yourself.
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.