Apple only support = big thumbs down!
What if you decide to hit some extra chips or a shot off the tee? The system would record it. Thats a drawback I see compared to the other system where you are in control of when it is active.
You don't have to have the phone in your pocket since the sensor is doing most of the location work, but you do need it somewhat close to you. I think no more than 30 feet or so (general BT range). As for those wanting android support its only a matter of time before they release it. Just have to figure out which piece of candy/dessert they are developing for.
Bag is alright for tee and fairway shots, you'll need it on your person on putts. I imagine it's a hassle constantly going from the bag to the pocket each hole (you're bound to forget it prior to putting once or twice a round). I hate having things in my pockets but have grown used to having my phone on me during my rounds.
Does the Arccos product give putting stats, length of putts made, missed, etc.?
I looked at the demo and it appears it just lists "putt 1", putt2" etc...but not the length of each.
I know people who do post scores and they have Arccos. Not sure why you wouldn't post a qualified 9 or 18 hole round. People over think this stuff!