Well, I think a lot of us are out there, quietly doing just fine. HoursTracker had its best year ever in 2014, and five years of best ever years before that. If you can solve an important problem in a way that resonates with a sizable group of people, you can find success. There’s always room for a fresh take on an already well-served problem, too.
We often hear about the frustrations of indie developers who are trying to make a living on the App Store, which has essentially become the default narrative for many (I often talk about this topic, too). Carlos Ribas, developer of HoursTracker, has a good article about the opposite scenario and how he managed to turn his app into a profitable business. Well worth a read to get a fresh and different perspective, and a good reminder that there are indie developers who are doing fine after years on the App Store.