I have no affiliation with Beersmith, just a satisfied customer.
I can tell you they port the app to Windows, Linux, and Mac, and they also have mobile Apps for iPad/iPhone, and I believe Android devices. Recipe design is nice, and you can upload recipes to the Beersmith cloud so that you can access them w/ your phone when shopping, or share them with your buddies, or the Beersmith community. The applications are stand-alone, so an internet connection is not necessary, and they also have timers so you can use them during brew day for mashing, and hop additions .