Need to know the date 85 days from today? This app makes it easy to calculate. Besides adding and subtracting dates, you can also calculate the difference between two dates and generate a sequence of dates. As a bonus, it also includes a time zone converter.

■Common Date Calculations:
The app includes three main functions: Date Add/Subtract, Date Difference, and Date Sequence. Selecting a date is easy with the wheel-style picker, and you can swipe the date field to move backward or forward by one day.

■Copy and Reuse Results:
You can copy the calculation result, either with or without the calculation details, to your clipboard to use in other apps. There are four different date formats available for the copied results, which you can choose in the settings.

■Supports Color Modes and Themes:
The app supports the system's color mode (light and dark) and allows you to select your favorite color theme from four different options.

●How to Use
1. Add/Subtract Dates

・Tap the "Base date" field to open the date picker. Spin the wheel to select your desired date. The button in the center sets the date to today. Swiping the "Base date" field moves the date backward or forward by one day.

・Enter the number of days in the "Days" field, and the result will appear immediately. You can use the buttons to specify whether you want to add or subtract the days.

2. Date Difference

・Tap the "Start date" field to select a date, then tap the "End date" field to select another. The result will appear immediately. You can swipe the "Start date" and "End date" fields to move the dates backward or forward.

・Tapping the "Days difference" field will switch the format of the result to "xx years xx months xx days," which is useful for calculating a person's exact age or the duration since an anniversary.

3. Date Sequence

・Tap the "Base date" field to select your desired date.

・Enter the "Interval (days)" and "Count" to see the results appear immediately.

4. Copying Results

・With the result displayed on the screen, tap the menu (three vertical dots) in the top-right corner and select "Copy." You can choose what to copy in the Settings menu.

5. Settings

Tap the menu (three vertical dots) in the top-right corner and select "Settings."

Copy:
Choose to copy the calculation results in either Detail or Simple format. Detail copies the results along with the calculation conditions, while Simple only copies the result.

Date format:
Select from four different date formats to be used when copying results.

Theme mode:
Set the app to either "Follow system" (display in light or dark mode based on your system settings) or to always display in light or dark mode, regardless of your system settings.

Color theme:
Choose the app's color theme from blue, green, orange, and purple.
Use system theme (wallpaper color)” refers to Dynamic Color, which is available on Android 12 and above.

6. Extra: Time Zone Converter
・Tap the menu (three vertical dots) in the top-right corner and select "Extra: Time zone converter."

・Under "Input (source time zone)," tap the "Source time zone" and "Date & time" fields to make your selections.

・Under "Output (target time zone)," tap "Target time zone" to select a time zone, and the "Converted date/time" will appear.

・In the time zone selection screen, you can search for a time zone by entering a time zone name or city name. You can also select from the Favorites and Recent lists. Tap the star icon next to a time zone name to add or remove it from your favorites.