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, West Coast IPA, Port Wine Oak Aged Belgian Dark Strong, Dark Mild, Best Bitter, American Barleywine, Maibock, Enjoy By Inspired DIPA
Secondary: Oud Bruin/Dark Sour, Light Sour, RIS, Flanders Red, Oud Bruin Aged with Currants
Primary: IPA, ESB
On Deck: Hefeweizen, DIPA