For beer, I really like your calculator but already had BeerSmith so just continue to use it. I want to be a paid customer for you, but can't because of the poor support for wine . (Check out VinoTrac for example). + Add wine yeasts / cider yeasts (there is another feature req out there for that). + Remove some "required" fields from the beer recipe, make them optional (Boil time for example). + Add more fermentables, like different grape varieties It still would not be perfect, but a data admin can add yeasts and fermentables without a software change, and I could use it for wine (and start using it for all my beer recipes).