My wife and I play a silly little game to pass the time on long road trips. It consists of taking note of license plates from as many states (and Canadian provinces) as possible while on the road.

Typically, we just scribble them down on a piece of paper and count them up at the end of a trip. But as we all know, if something is worth doing, it is worth overdoing, so I went ahead and made an iPhone “web app” (if one can even call it that) to manage the process.

I call it Interstate. It is about as simple as an iPhone app can be, providing an alphabetical checklist and running tally. Here is a screen shot:

Interstate screen shot

Check it out using your iPhone (or Safari 3.x) at http://interstate.stringify.com/.