I have Beersmith on my desktop, but on my phone and tablet I have iBrewmaster. I find I use iBrewmaster almost exclusively now. Highly recommended. The developers are very active with updating the app with new features, ingredients, etc.
Keg: Rye Saison, Belgian Dark Strong, RIS, Belgian Golden Strong, DIPA
Secondary: English Barleywine, Oud Bruin/Dark Sour
Primary: Citra IPA, ESB, Belgian Dark Strong
On Deck: Maibock, RIS, DIPA