Startup Return Calculator - How much money can your startup investment make you?
Numi App - Numi is a beautiful text calculator for Mac.
Harpoon Revenue Goal Calculator - Freelancers, how much money do you need to make?
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.
Omni Calculator - Helping you make rational decisions, one calculation at a time.
Soulver 3 for Mac - A smart notepad with a built in calculator