I was pleasantly surprised and pleased with the accuracy of the distances.
Golfshot: Golf GPS app is an excellent replacement for my SkyCaddie SG5. I have played two rounds since purchase and the iPhone5 app has worked as advertized.
Best App I have on my phone. A lot cheaper than sky caddie and just as accurate. Layup option took some time to figure out, but works great. Battery will last a long time if you hit the little green button in the lower left after each approach shot. If you take a lot of approach shots it could wear out your battery :)
Excellent app. Use it every round.