I used Dive log 5 when I was using a PC; since changing to a Mac I have been using Dive Log Manager on my laptop and on my iPhone and iPad. I like the fact that I can create an ad-hoc wireless network and sync the three devices whether I have a network available or not. I do love the print designer in Dive log 5 so my next challenge is to try to export Divelog Manager to Dive Log 5.