CalcTape Calculator with Tape

Calculator with an editable paper-tape: calculate, comment, and correct any line instantly.

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CalcTape is a calculator built around an editable paper tape: every entry in a longer calculation stays visible, can be labeled with a comment, and can be corrected in place, with the whole tape recalculating instantly. That makes it suited to everyday multi-step sums where a normal calculator loses the trail.

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