It's actually been out for a couple of years now, and it gives locations of city services and the like. I've not mentioned the thing here on Carless Columbus in the past because, frankly, I haven't found it all that useful (and if the features I'm talking about have actually been part of the app in the past, I apologize, I just discovered them recently).
But, I'm happy to say that's changed. The app now has a link to the Columbus 311 service line where you can file service requests with the city to get things fixed! This includes issues like potholes, requesting bike racks, and a multitude of other issues (not all bike- or even traffic-related). So you need never worry about forgetting to file a request to have a pothole fixed again - just pull over (PLEASE) and file your claim as you find the pothole in question, or see a great spot for a bike rack, or whatever.
Not that it has anything to do with carless commuting, but the app also lets us know when recycling and trash days are in the neighborhoods around the city. This is definitely a big plus.
People, not speed.