Gear Ratio App. for iPhone

In the endless pursuit to turn all modern devices into tools for the bike community, our North Eastern Bureau Chief came across this gem.
The Bicycle Gear Calculator application for the iPhone and the iPod Touch. It is capable of calculating gear ratios, gain ratios and gear inches. It features a Skid-Patch visualizer which is extremely telling of the amount of nerdiness one may contain. For more info and details clicky on the linky Bike Gear App.