Cyclebraid: RRULE Lab

About Cyclebraid: RRULE Lab

Cyclebraid: RRULE Lab is a focused, fully on-device app. A deterministic iCalendar recurrence debugger for RRULE, RDATE, EXDATE, DST, floating time, time zones, exceptions, collision windows, and human-readable schedules.

KEY FEATURES
- Parse VEVENT recurrence sets and VTIMEZONE data
- Expand RRULE with RDATE, EXDATE, and overrides
- Visualize DST gaps, folds, and floating-time behavior
- Compare schedules across cities and calendar engines
- Generate edge-case fixtures and readable explanations
- Complete bundled sample and local comparison workflow
- Local PDF report and Apple system share export
- Original offline technical reference library

ONE-TIME AND PRIVATE
- One paid download; no subscription or in-app purchase
- No account, advertising, analytics, tracking, or developer-operated backend
- Core features and bundled content work offline
- Work remains on device unless you deliberately share or export it through an Apple system interface

Interoperability and test aid. Calendar servers and clients vary; verify critical schedules in every target system and jurisdiction.