Hi, I think it might be time I upgraded my phone. I installed the Seeing Eye GPS app yesterday and promptly bought the three-year subscription. Right off the bat I was impressed with my ability to get location and POI information though I was inside my lab and well away from outside windows. I took it for a spin on the way home from work and the routing was dead on. I may, however, need to upgrade to an iPhone 5 or at least a 4S now, as I'm finding that responsiveness when moving about the screens is a bit slow on my iPhone 4. By way of comparison, moving around on Navigon screens was slow for me too when I first tried an earlier version. Do you have any tips for us iPhone 4 users to help us increase responsiveness when moving around the screens? I've cleared out the app switcher before launching the app. Perhaps I need to power down and restart the phone. Haven't done that in ages. Any thoughts? As I said in another post, the Seeing app is very nice indeed. Great job, guys. CHEERS! Tom