Calculator for Date and Time

A date and time calculator app with a simple and easy-to-use interface.
Function details:
- Date addition and subtraction
Calculates the date when the number of days and hours are added or subtracted from the start date.
- Days and hours between two dates
Calculate the number of days and hours between the start and end dates.
You can specify whether to include the end date in the calculation result.
- Elapsed time and remaining time
Displays the elapsed time from the past date and time to the present, or the remaining time from the present to the future date and time.
It is a countdown and countup timer function.
- You can copy the calculation result to the clipboard by long-pressing it.
- Since the calculation result is on the top and the input items are on the bottom, it is easy to use.
- Lightweight and efficient interface optimized for the latest iOS.
- Supports dark mode.