First they proposed five types of developer, and you won’t find it hard to recognize them:

• S0 – the innovator always builds apps with a wide range of novel features.S1- the milker who implements slight largely unnecessary variations on a single app.
• S2 – the optimizer who simply releases improvements on their most successful app.
• S3 – the copycat simply copies the best apps in the market.
• S – the flexible developer who adopts whichever strategies seems good at the moment.

via The Artificial Life of the App Store – the Best Strategy to Succeed.