I agree with Hollis but I just stick my iPad on the beer fridge in the garage and it works great. If you don't use/check your iPad regularly I would buy the iPhone version. I have found I use beersmith to make the recipes then import them into ibrewmaster for ease of use. I know it's $50 in software costs but it is worth it for getting great recipes that are easy to follow on brew day.
It's ok to stare at my kegs! Just don't touch them!