DaySpan

DaySpan is a simple offline date difference calculator designed to help you understand the exact span between two calendar dates. Choose a Start Date and an End Date, and DaySpan instantly calculates the elapsed number of days along with useful weekday and weekend information. Everything works directly on your device with no account or internet connection required. DATE DIFFERENCE CALCULATOR Select any two supported dates and instantly see: • Total Days • Full Weeks + Remaining Days • Weekdays • Weekend Days QUICK TODAY ACTIONS Set either your Start Date or End Date to today's date with a single tap. SWAP DATES Selected the dates in the wrong order? Use Swap Dates to exchange the Start and End dates instantly. CLEAR DATE VALIDATION If the End Date is earlier than the Start Date, DaySpan clearly lets you know instead of silently changing the result. SAME-DAY CALCULATIONS Selecting the same Start and End Date correctly returns: • 0 Total Days • 0 Weeks and 0 Days • 0 Weekdays • 0 Weekend Days ACCURATE DATE CALCULATIONS DaySpan uses date-only calculations designed to avoid time-of-day and daylight-saving issues. It correctly handles: • Month boundaries • Year boundaries • Leap years • Long date spans LOCAL DATE RESTORE Your currently selected Start Date and End Date can be stored locally so they are restored when you reopen DaySpan. DaySpan does not maintain a calculation-history list. CUSTOMIZE YOUR EXPERIENCE Choose between: • System theme • Light theme • Dark theme You can also turn haptic feedback ON or OFF. SIMPLE AND PRIVATE DaySpan is designed as an offline utility. • No account required • No advertisements • No analytics • No cloud sync • No calendar permission • No location permission • No notification permission • No internet connection required for normal use Whether you need to measure a short date range or calculate the number of days across months or years, DaySpan gives you a clean and simple way to see the difference.