Has anyone used the ANT adapter for the iPhone? I saw this at REI yesterday. My new bike has duo-trap sensors on it. I wish I'd known about the adapter before I purchased the wireless computer for my bike. FWIW "motion gpx" is the app I use so far so good . I did drain my battery on a three hour ride, but I started with on 60% charge, and I hadn't modified the settings to maximize battery use. ( it was talking to me every five minutes!)