I just downloaded the free version to check it out. I've been using the Pinball Map iPhone app, and I completely love it. The PinFinder app seems OK, and maybe the Pro version is better, but it doesn't seem to have as many locations as the Pinball Map app does. On the other hand, the Pinball Map only covers certain metropolitan areas (and luckily I live in one of those) so if it doesn't cover your area, I can see why you'd prefer PinFinder.