It was almost 100% the latter (built the app first then did SEO). Back when I started I didn't know anything about SEO or even how to know if something was "lo

It was almost 100% the latter (built the app first then did SEO). Back when I started I didn't know anything about SEO or even how to know if something was "low competition". I only figured out how to do keyword research several months later. The one thing I did before building was Google the terms I wanted to rank for and confirm that I could build something better than what was already on the first page. But that was more about looking into competing products than anything SEO-related.