Portulator vs FermCalc Winemaking Calculator

This app is a utility that calculates the amount of spirits to add to a wine to make a port wine of a target alcohol percentage. The first tab is for fortified wines where the user simply inputs the wine volume, wine alcohol percentage, spirits alcohol percentage, and the desired port wine alcohol percentage. The result is the volume of spirits to add to the wine. The second tab is for port-style wines. With a given must volume and a starting and ending Brix, one can calculate the amount of spirits to add for a target alcohol percentage and a given spirits alcohol percentage. The tab also calculates residual sugar after the addition of spirits.

FermCalc is a collection of advanced winemaking calculators designed to assist both amateur and professional winemakers with calculations related to the following activities: - Unit conversions - Chaptalization & dilution - Acidity adjustment - Sulfite additions - Alcohol & solids content estimation - Blending - Fortification - Miscellaneous additions FermCalc provides full flexibility for specifying both input and output units on all of the calculators. All of the functionality of the popular Java and JavaScript versions of FermCalc are included in the Andrioid version. Below is a complete list of the calculators currently available. ---------------------------------------- Unit Conversions -- Volume -- Mass -- Temperature -- Specific Gravity / Density -- Acidity -- Alcohol Content -- Concentration -- Refractivity ---------------------------------------- Sugar Calculators -- Chaptalization & Dilution -- Amelioration -- High Brix Measurement by Dilution ---------------------------------------- Acidity Calculators -- Acid Titration -- Acidification & Deacidiication -- Amelioration -- NaOH Standardization ---------------------------------------- Sulfite Calculator ---------------------------------------- Alcohol Content Calculators -- Hydrometer SG Drop -- Hydrometer & Refractometer -- Boiling (Spirit Indication) -- Potential Alcohol -- OIML Calculator -- Dry Matter ---------------------------------------- Blending Calculator ---------------------------------------- Fortification Calculators -- Post-Fermentation Fortification -- Fortification Point -- Hackbarth SG Calculator ---------------------------------------- Miscellaneous Calculators -- Dry Measure Converter -- Stock Solution Formulation -- Inverse Stock Solution Makeup -- Miscellaneous Additions -- Yeast Assimilable Nitrogen (YAN) ---------------------------------------- A help page is provided for each calculator, with a high-level description of the calculator and definitions of the input and output fields. Full details regarding the mathematics involved in the calculations are available at www.fermcalc.com.