While most iPhone apps/games are created by 2-4 people, all these iPhone apps / games are created by 1 person only. It takes about 3-4 months to complete each of them, together with the graphics, submit process, marketing, etc.
The developer has been worked in Moto as a small fry. He is currently an independent software developer. Besides iPhone game/app, he also works on Facebook app, Android app and other Flash game.
Based in Hong Kong, he has joined Global Game Jam 2013 (Hong Kong) and won an award. Here is the prize:
More interesting apps and games will come soon.