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Insert new lines or delete lines inside of your calculations and see the updated results immediately. Save your calculations into files. Open the files later to change the calculations. Define your own functions and buttons. Share your complete calculation via e-mail, Airdrop and more. Print your calculation. Choose your favorite design. iCloud support (Mac OS 10.10 and higher). CalcTape masters the four basic arithmetical operations, exponentials, percentage calculations and much more. CalcTape, more than a calculator.