Time Passage vs CalCheck

Calculate the time duration from a given birthday

CalCheck ensures your calendars stay in sync across all your iOS devices. Never wonder if your events are up-to-date again! Install on more than one device, and they verify each other. This smart verification tool creates a special test event that moves through time, allowing you to instantly see if your calendar sync is working properly. Perfect for professionals, families, and anyone managing multiple devices who needs reliable calendar synchronization. KEY FEATURES: • Automatic sync verification every 2 hours • Real-time detection of other devices' sync status • Push notifications 24 hours before sync checks • Track sync history with detailed timestamps • See all your devices and their last sync times • Background sync monitoring - works while you sleep • Clean, simple interface showing last 30 days of events • Support for multiple calendars • Works with iCloud, Exchange, and other calendar services HOW IT WORKS: 1. Select your calendar for monitoring 2. CalCheck creates a verification event 14 days in the past 3. The app checks if this event syncs across your devices in the background automatically 4. Get notified if sync issues are detected 5. View other devices' sync status in real-time (need to be installed on two or more iPhones or iPads to work, connected to the same calendar) Perfect for: - Business professionals with iPad and iPhone - Families sharing calendars - Anyone who's missed appointments due to sync issues - IT administrators managing device fleets Never miss an important event due to sync failures again. CalCheck runs quietly in the background, giving you peace of mind that your calendar is always up-to-date.