SymCalc - Symbolic Calculator - Math toolbox for iOS. Advanced calculator features with a tape-like history, not requiring internet...
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.
Numi App - Numi is a beautiful text calculator for Mac.
INCI Beauty - INCI Beauty is a french application that allows you to analyze the composition of cosmetic products: simply scan the barcode of a product in a shop or at home to obtain information on the ingredients it contains as well as info about them.
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.
BMI Calculator - A simple yet fully-featured BMI Calculator.