BMI Calculator - A simple yet fully-featured BMI Calculator.
Soulver - Soulver is a software application that functions as a calculator that allows you type a continuous stream of information rather than having to input data into multiple cells.
PureCheck - Scan Food, Cosmetic app helps you to look into the ingredients in the food and cosmetic products you are buying and choose healthier and better alternatives.
SymCalc - Symbolic Calculator - Math toolbox for iOS. Advanced calculator features with a tape-like history, not requiring internet...
Body Fat Calculator by GigaCalculator - Body fat calculator - estimate your body fat percentage and body fat mass.
Numi App - Numi is a beautiful text calculator for Mac.