When I'm at a yard sale I can't always remember what games I have or not. So I created NES Collector. It's an iPhone / iPod Touch app that keeps track of all games in your collection, see their value, rarity and more.

Here's a video I made of it:
http://www.youtube.com/watch?v=FQkNyRd8ZtY

And the download can be found here:
http://itunes.apple.com/us/app/nes-collector/id386770561

Thanks for reading!