In 2010, Rob Foster and I released our first app, Calvetica, to the app store. It was one of the first two or three, if not the first, third-party calendar apps to use the new Event Kit that was released with iOS 4. The first day we sold around 20 copies, which wasn't bad I guess, but we're pie-in-the-sky dreamers, so we were a little disappointed. The next day, I woke to see we had sold 700 copies, and it got better and stayed that way for a while. It was the most excitement I'd felt since Christmas as a kid, watching our app climb the app store rankings. We made a lot of money.
Then, to our confusion and great disappointment, the rankings started to slip. Then, John Gruber linked to it on Daring Fireball and we sold about 2000 a day for a while and go to the #2 spot in productively and the #50 spot in the whole App Store. Thank you John! But, that was also just a spike. We began to watch our app sink again and wondered if and when it would stop. I bet if any app developers are reading this, they are shakin