If Apple were to make a home brewing app, this would be it. Shopping function is great for looking up prices without having to leave the application – It has WebKit built right in, try getting that with another freeware app. And if you have Skype, you don't even have to pick up the phone to call your home brew shop. Plus it'll open and export .REC files, so you can swap files with all your homebrew buddies on PC's using ProMash.

Other apps will help you organize your recipes pretty well but in addition to a well thought out approach, the design is the best I've seen for a brewing app on any platform. PC users will wish it was available to them as well.

Support is also top notch. Don't be bothered that it isn't free, it is well worth it.