＿Roll Paper Calculator is the calculator that has function for remaining input data and the results of calculation on the paper, therefore you confirm the process of calculation and all input data for result.
Application name describes as "makiden" on the iPhone desktop, its japanese, mean , "maki" is "roll", paper is abbreviated, "den" is "electronic". why "den", "dentaku" mean "electronic calculator" in Japanese. Then does "taku" ean "calculator"? No, then Why "taku"? "taku" mean "table". "dentaku" mean "electronic (calculator: abbreviated) that can operate on the "table" ", perhaps. What ever or not, when you visit Japan , you can use "dentaku" instead of "calculator", but all Japanese know the word ,"calculator" ....
usage: calculation for the account for many of goods on your shopping cart.
calculation that has many input summation, like home finance.
any calculation, very convenience for confirmation of the calculation result.
There is no paper because of iphone, but it shows input data and the result to display ike on the a paper ,
When you slide down the paper, if you can see the input data and results even if it goes out of screen.