Make your own calculator! The arrival of smartphones has made working on the go as easy as 1-2-3. It has become a regular occurrence for many of us. They key requirement for working on the go is the ability to manage things like mail accounts, calendar and payments. This review can help people in this. CalcForm (= Calculator + Spreadsheet), developed by Pure Signal, is a utility app that lets users create their own custom calculators. After launching this app, …