AlertSign is a sophisticated cross-platform calendar intelligence application built with Flutter, designed to deliver real-time full-screen alerts for upcoming calendar events and reminders. It bridges the gap between passive calendar notifications and attention-grabbing, context-aware alerts ensuring users never miss a meeting or deadline.
The app integrates deeply with native iOS EventKit to access calendar events, reminders, and travel time data. It provides granular control over alert triggering through smart filtering, exclusion rules, and work-hour enforcement. A native iOS Home Screen Widget offers a live, glanceable view of upcoming events, while background refresh tasks keep widget data up to date even when the app is closed.
AlertSign is designed for professionals managing complex calendars across multiple sources (iCloud, Google, Exchange) who require reliable, intelligent alerting aligned with their schedule context.