Information Week has estimated that in by 2009 the Apple app store will be a $1.2 billion business by 2009. Although this is a best case scenario estimate that estimates about 85 million devices, it could be possible that the Apple App Store for iPhone and iPod touch devices could be a billion dollar money maker in less than a year and a half. This estimate comes from analyst Gene Munster of Piper Jaffray, who also put out a more conservative estimate that puts the App Store market at about $770 Million. The main driving force behind all this is expected to be games. Currently the iPhone and iPod touch devices don’t have support for any gaming. And given the fact that the iPhone audience is mostly young and tech-saavy, this could lead to huge amounts of revenues for game and software developers for the iPhone OS. Already, many of the top game studios have announced that they will release games for the iPhone OS by the end of the year. Some of these game developers include Sega, Pangea Software, and Electronic Arts. I don’t know if the $1.2 billion estimate will become a reality, but I believe the App Store will be pretty big. The iPhone has awesome hardware and basic software, and it will only get better when the platform opens up so anybody can write applications for the iPhone OS that consumers can download and use.