Between Sheet

This application is a Date and Time calculator.
It equips User Interface suitable for Touchscreen. (Direct touch to displayed number works as number input or modification, or switching between result and input.)

(Spec)
・Date calculation (Number of days between 2 dates, Addition/Subtraction date with days) 2 sheets. Exclusion of the directed day of the week. 3 types year-month-day order.
・Date with time calculation sheet. Financial calculation 1year=360days and inclusion/exclusion selection of the ends (Both/Either/Neither).
・Time Addition sheet (5items). Time Multiplication sheet (5items).
・Addition sheet calculation is switchable from 4 kinds (including proportion). Multiplication sheet calculation is switchable from 3 kinds.
・Conversion the value between year, month, day and connected year-month-day. Conversion the value between hour, minute, second and connected hour-minute-second.
・Number input and modification by direct touch action to the digit you want to change. In re-calculation of slight changes, entering full number is not necessary.
・Number input in keyboard sheet with keys that according to the number type to input.
・The direction of calculation is switchable by touch. Inverse calculation, changing result field to input, is easy.
・Calculation result is automatically done at the time necessary inputs reach.
・At the pressed moment of the key, the key function is shown display. (Not the released moment.)
・Lock of each number is possible.
・Internal calculation: 16-digit decimal or fraction, independently developed (Not binary floating/double)
・Display number length is selected from 9/13-digit depending on screen size.
・2 sheets can be parallelly shown and operated if screen size is larger.
・Copy / paste function of a each number and a sheet.
・2 memories
・Selectable rounding position(6) and rounding mode(3).
・Selectable decimal point/separator character(5) and separator position(4), and number character(19).
・Automatic save of the calculation state at the application termination.
・Whole initializing. Or returning to the state at the time application started.
・Dark theme(Android10)