Listcalc Calculator (ekm.ReadWorks.Acts) on Google Play
A scientific calculator with result history.Easily scroll through questions to keep track of operations.Features include:List of previous questions and answers,Long click on result to input question,Swipe through pages,Click on result to input answer,Graphing,Quadratic equation solver,Landscape view for all activities,Keyboard support,Most trigonometric function,Completely Free,No advertisement!!!.