Calculation help
- Check Add, Subtract, or Between mode.
- Review whether the start and end can count.
- Confirm the selected calendar matches the rule you need.
- Open Rule and source details to capture the revision and hash.
Report a correction
A useful report includes the public inputs, expected outcome, observed outcome, and authoritative source. A final support email remains a launch gate; until then, use the repository roadmap linked from the project documentation.
Accessibility
The site is designed for keyboard operation, visible focus, semantic headings, reduced motion, and responsive text. Report any barrier with the route, browser, assistive technology, and the action you could not complete.
iOS permissions and purchases
Calendar drafts and reminders are user-initiated Pro workflows. Permission denial should leave the calculation and saved record intact. Entitlement loss never deletes existing records.
Questions people ask
Why did my sourced calculation stop?
The OPM profiles are verified only for 2024 through 2027. DueRule blocks results that would rely on unverified dates.
Can I restore Lifetime Pro?
The iOS app will provide an explicit Restore Purchases action that invokes Apple synchronization. Website access does not control the iOS entitlement.
How should I report a calendar problem?
Provide the public profile, input dates, boundary choices, observed result, expected result, and an authoritative source link. Do not include confidential matter details.