BrewTools, developed by DallasBrewing, is a free Android app that offers a comprehensive collection of tools for both professional and home brewers. The app offers six main tools that include Density Converter, Alcohol Calculator, Color Converter, Dilutions, Volume Calculator, and Priming.

The Density Converter tool allows users to manage units such as Specific Gravity, Plato degrees, Brix degrees, and saccharometer degrees. The app also enables users to correct the density value with wort temperature. The Alcohol Calculator tool calculates the alcohol content from density. The Color Converter tool helps users to convert between SRM, EBC, and Lovibond. The Dilutions tool helps users to calculate dilutions for hop and malt extracts. The Volume Calculator tool enables users to calculate the volume of wort, water, and other liquids. Finally, the Priming tool helps users to calculate the priming sugar needed for carbonation.

Overall, BrewTools is an excellent app for brewers who need a comprehensive collection of tools to help them with their brewing process. The app is easy to navigate, and the interface is user-friendly, making it easy to use for both beginners and experienced brewers.