Across works based on calendar and reminder data stored in the iOS/macOS system. In most cases, synchronization is automatic in real time or within a few minutes. However, in some situations, sync may be delayed or events may not appear immediately. Please go through the checklist below.

📱 iPhone / iPad

1. Confirm Apple ID

• iPhone Settings > Apple ID

  Make sure all devices use the same Apple ID.

2. Enable iCloud for Calendar & Reminders

• iPhone Settings > Apple ID > iCloud > iCloud Storage > See All
  • Calendars → On
  • Reminders → On

3. Enable Keychain

• iPhone Settings > Apple ID > iCloud > Passwords & Keychain
  • Toggle must be On

4. Calendar Sync Range

• iPhone Settings > Apps > Calendar > Sync
  • Select All Events

5. iCloud Account in Calendar

• iPhone Settings > Apps > Calendar > Calendar Accounts
  • iCloud account must be listed

6. Calendar: Fetch New Data

• iPhone Settings > Apps > Calendar > Calendar Accounts > Fetch New Data
  • Push: On
  • iCloud: Push
  • Fetch: Automatically

7. iCloud Account in Reminders

• iPhone Settings > Apps > Reminders > Reminders Accounts
  • iCloud account must be listed

8. Reminders: Fetch New Data

• iPhone Settings > Apps > Reminders > Reminders Accounts > Fetch New Data
  • Push: On
  • iCloud: Push
  • Fetch: Automatically

9. Across App Permissions