Post River Software was formed in 2004 by a small group of computer engineers who are also pilots. In this age of abundant information, a gap was noticed between the amount of information made available by the government, and the amount of information actually available to the pilot. The software presented on the aviation page was written to help fill that gap.
Since then, mobility has exploded onto the scene. Post River Software now focuses on mobile apps, iPhone & iPad apps in particular.
Marc is a freelance iOS developer, and can convert your ideas into an app. Details here. And here.