How long after launch did you get your first customer?
dpcan: Before I launched each app, I had my first customers lined up.  I think it's a mistake to spend time developing something first and then hope there are customers somewhere.To be more specific, while developing a big product I spent time each week contacting people in my network until I found customers that were ready to pay as soon as I went live.  It worked well.In one case, I found a company that allowed me to offer 4, 2-hour classes with 15 people per class for 1 day after launch just to introduce them to the app, answer questions, and get everyone signed up.I got about 40 paying customers that day, and it was the best launch ever for my small business as all those people told more people and we were growing from day 1.