Simple question but unfortunatelly I don't have an answer. I spent all my time on coding instead of marketing and analytics. That's probably not the best thing

Simple question but unfortunatelly I don't have an answer. I spent all my time on coding instead of marketing and analytics. That's probably not the best thing for the startup. I only track a number of downloads from time to time but it's not that big as I never conducted any marketing campaign. I've only submitted the app to some directories like crunchbase and others.