Write an iPhone application

Simple project to write an iPhone / iPad and android application to perform a mathematical calculation similar to [login to view URL] Must have the look and feel of [login to view URL] Input --------- Invoice Value - numeric 3,6,9,12 month instalment - radio Display ---------- 1st instalment total Further instalment total. Configuration menu ----------------------- Interest Rate % Setup Fee Spread Setup Fee Payment Y/N Calculation -------------- If( spread setup fee payment = True) { 1st instalment = ((interest rate x invoice value x instalments) + setup fee + invoice value ) / instalments) further instalments = 1st instalment } else { 1st instalment = (((interest rate x invoice value x instalments ) + invoice value ) / instalments) + setup fee further instalments = (((interest rate x invoice value x instalments ) + invoice value ) / instalments) }