Calculate. Comment. Correct.CalcTape makes the arithmetic process visible – you can do multiple calculations and subsequently correct or change all numbers and operations. CalcTape is a revolutionary new kind of pocket calculator. With CalcTape, also extensive calculations remain clearly structured: – Input a long list of values to be calculated and never lose the overview – just like with an adding machine with a paper tape. – You can use intermediate results to structure and to check your results. – If you should later change individual mathematical expressions, then the complete calculation is automatically updated.- Intuitive percent calculations.- Input comments on single items and results.CalcTape Smart Calculator is free and your ideal companion for office and personal calculations – everyday.===================If you find any problem feel free to contact us. You can help us improving CalcTape Smart Calculator by stating your Android version and smartphone model.