I dunno. I really wanted to like this app. But seems kind of buggy. When I tried to customize the toolbar the application repeatedly crashed. I also noticed that when I brought up an address book entry that had a home address, the address did not show up. I think needs more work and the 10 dollar price tag is a bit much considering there are other free alternatives. I also didn't really like that so many of the features are hidden (you have to consult the help to find them). Not very Mac like and reminds me more of a PC app.