I dont understand all the bad reviews. This worked just fine for me. I downloaded it as a fluke as we were driving through the mountains in CO. My friend said, "boy I wish I had an altimeter." I said "Im sure theres an app for that!" I downladed it while on the edge network to my iPhone 4. A few places we had the chance to check it against recorded altitudes (ie Loveland Pass) and it wasnt far off. Close enough for what we wanted....and it was FREE!
sjg526 about Digital Altimeter FREE