About this app
Date Time Calc Fast, reliable date and time calculations for professionals and power users. Add or subtract intervals, compare two dates, and get precise differences down to seconds—always formatted using your Mac’s locale and calendar settings. Examples • Add 150 days to today • Difference in years, months, and days between 25 March 2009 and today • Precise gap from last Monday 09:55:30 to next Friday 11:07:15 • Time from now to 10 December next year at 12:00 PM Easy to use • “Natural” inputs: years, months, days, weeks, hours, minutes, seconds • Calendar Date mode (add/subtract Y/M/D) • Time Precision mode (add/subtract days/hours/minutes/seconds) • No Calculate button—results update instantly as you edit • Clear textual summary under the fields • One-click “Set to Now” for quick what-ifs • Standard macOS date & time controls you already know Features • Live results as you type • Differences shown with natural components (Y/M/D/W/H/M/S) • Weeks supported for totals and differences • Copy results as plain text • Locale-aware date/time display and language • Add or subtract intervals (past and future) • Optional inclusion of hours, minutes, seconds for maximum precision • Persistent log to keep your calculations across relaunches • Reset the log at any time • Built on Apple’s date/time frameworks for accuracy and calendar correctness • Built-in PDF User Guide (Help menu)
Latest release
What’s New
Redesigned, simpler and cleaner interface Clear graphical distinction between Date 1, Interval, Date 2 Visual indicators when changing dates or intervals Visual feedback of automatic calculations during editing Clearer and more readable results Customizable font size for results 3 different result formats (composed, days, weeks) Editable log with option to add your own text Improved calculations Copyable log Various bug fixes
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 13, 2026 · 4:03 AM $5.99
Screenshots
