Harry's was recommended and it does work accurately-- when it doesn't crash. And phone mounting options are limited. And for real accuracy an add-on 10mHz GPS is needed.
AIM Solo on the other hand is one great device.
Last weekend I was running Harry's on an Iphone 4 and a transponder for time trails. Harry's was showing my laps as much as 2 seconds faster than reality.... disappointing. The 10mh add on is probably what I need to try, or buy an Aim Solo.Harry's was recommended and it does work accurately-- when it doesn't crash. And phone mounting options are limited. And for real accuracy an add-on 10mHz GPS is needed.
AIM Solo on the other hand is one great device.
It was one of the two that Harry's site recommends as compatible with his software, the one that plugged in to the iPhone itself (old style connector, before the 5 or 5S). Got it off Amazon, readily available, but sorry don't remember its name. Be happy to sell it for $50 if you or anyone else wants one.
I have been in touch with the factory in England and they seem to think that the most recent iOS update may cure the Bluetooth issues.You're not concerned about the red warning about incompatibility with some iOS updates? That's the whole problem with any device that's not standalone IMO, you're adding connectivity and firmware issues. They may work and they may not. I'd rather have one device that needs one mount and one battery.