I got tired of always reworking the formulas or running into the house and plugging them into a spreadsheet so I worked up a quick iPhone web app to do simple ABV/ABW calculation from gravity or brix measurements.
I'm looking for feedback, comments and suggestions. Are my formulas correct? If it is useful maybe I'll expand it to some more calculations. Please let me know!
Not sure about those, but theres a free app called brew pal that is kind of like a lite version of beersmith for the iphone/ipad. Its prett handy to figure out expected gravities from ingredients and does both hydrometer and refractometer inputs.