GG567Chrono

GG567Chrono is an offline date utility for everyday planning and personal time tracking.

Use it to compare two dates with clear options for including or excluding the start and end day.
See the total day count, full weeks with remainder, and a calendar year-month-day span side by side.

Shift any date forward or backward by days, weeks, months, or years. When a target month does not contain the original day, the app uses the last valid day of that month and explains the adjustment.

Track working days with your own weekend choices, custom exclusion dates, and extra work dates. The app does not rely on system calendar data or online holiday sources.

Save personal dates for anniversaries, plans, and recurring events. Add tags, notes, repeat cycles, and visibility controls, then revisit upcoming or past items at any time.

Recent calculations are stored locally so you can reload inputs, review the calculation method, or clear history when needed.

All data stays on the device for offline use.