The contents of the calculator and worksheets are preserved between computing sessions. All time value of money variables are continuously displayed to give you confidence in your problem setups. The calculator has been optimized for viewing on iPhones and iPads. If you are a student or a finance or real estate professional that is already familiar with the BA Plus you will feel at home with this calculator. It is built with the same layout, functions and algorithms of the original. BA Plus Calculator is an emulator of the TI BA II Plus.