Spirit Calculator is a free Android application developed by Kaa, designed to assist users in calculating various alcohol-related solutions. This application provides features such as dilution of water-alcohol solutions with contraction, alcohol content by weight and volume, boiling point of water-alcohol solutions, correction of alcohol content depending on temperature, and calculation of recipes.

The user interface is straightforward and easy to navigate, making it accessible for both novice and experienced users. The app also offers documentation, an issue tracker, and support through the Google+ community. Spirit Calculator is a valuable tool for anyone in the alcohol industry or those who frequently make homemade alcoholic beverages.

Overall, Spirit Calculator is an excellent utility application that delivers what it promises. Its features are comprehensive, and the interface is user-friendly, making it a must-have for anyone who frequently deals with alcohol solutions.