The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
Mole Calculator provides users with one of the easiest and comprehensive tool to convert between moles, grams, liters at STP, and atoms or molecules (particles). User inputs the chemical formula as free-form text and one of the four variables (g, moles, L, or the number of atoms or molecules), the calculator outputs the other missing variables.