BeerBoi

BeerBoi is a digital hydrometer for home brewers. This is NOT a Tilt or iSpindel, this is completely different and does not rely on an accelerometer to guess the specific gravity of the beer. Instead, BeerBoi uses a strain gauge, similar to those found in ordinary digital kitchen scales. A container of known weight and volume is suspended in the beer. As the wort ferments into beer, the specific gravity decreases, and the container weighs more. BeerBoi measures that change in weight and converts it into specific gravity. Accuracy is quite good.