Update 9/12/2013 - The Brewer’s Friend iPhone app version 1.7 is now available on the App Store! The 1.7 release adds 70 new yeasts! Brands include: East Coast Yeast, Mangrove Jack, Real Brewers, Siebel Institute, and Brewferm. Two new stand alone calculators: Plato/Brix -> Specific Gravity calculator, Dilution and Boiloff Calculator. Ability for extract and partial mash brewers to set 'kettle' or 'fermentor' batch size target.