If you're like me, the certification and marketing take almost as long as the development, spending extra time on graphic design for your promotional images as well as putting in time to consider your market and price point. Further to this, there are a bunch of privacy statements to consider and other certificates as well.
All in all, I've learned that when developing something like a game or app, you must consider the market side of things as well.
I'll post once I get the app certified. In the meantime here is one of the promotional images used!
