Perfect Weather by Constrast is an app I have been waiting for for a long time. I have been trying a few weather apps, used Check the Weather until I switched to Today Weather. I sticked with Today for a while but it wasn't the app I was looking for, so I when I heard that David Barnard was working on a weather app I was really excited. But, after all the excitement, Perfect Weather ended up disappointing me. Don't get me wrong, the app is really great and it has exactly the features I want from a weather app, but the app only works in the US, so it useless for me. Dave Caolo of TUAW prepared a nice review of it, so if you are in the US and looking for a great weather app, check Dave's review and get Perfect Weather - it's only 2.99$ on the App Store.