I tried the free App. It worked, but I wanted more (than 3 sessions). So I upgraded. So far I am using it with my iPhone 6+. Absolutely just worked perfectly the first time. I am using it on my Jeep with a suction cup windshield mount. My first mount purchase was a suction cup and flexible stalk to the phone holder. Way too much vibration. My next is an iottie Easy Flex 3. The sticky suction cup has incredible holding power, but still a bit of vibration through the rest of the structure, so I hot glued it. I have not tested it yet, but I think it will be acceptable. I need to find a better one for my Corvette for lapping days. I also plan to add an OBD II WI-FI interface. Just such a cool product.
KirkLucky about TrackAddict