Across

Sync

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

  • iPhone Settings > Apps > Across
    • Calendars: Full Access
    • Reminders: On

10. Third-Party Calendars

  • iPhone Settings > Apps > Calendar > Calendar Accounts > Add Account
    • Add Google, Naver, etc. separately on each device

11. Launch Across

Open the Across app and check if events/reminders appear.

🔄 Manual Sync Tip (iPhone/iPad)

If sync seems delayed:

  1. Open the Apple Calendar app
  2. Tap Calendars (bottom center)
  3. On the list screen, pull down to refresh

This forces a system-level sync, which Across will reflect automatically.

💻 Mac

1. Confirm Apple ID

  • System Settings > Apple ID Must match iPhone/iPad Apple ID.

2. Enable iCloud for Calendar & Reminders

  • System Settings > Apple ID > iCloud > Show All
    • Calendars → On
    • Reminders → On

3. Enable Keychain

  • System Settings > Apple ID > iCloud > Passwords & Keychain
    • Must be On

4. System Permissions

  • System Settings > Privacy & Security > Calendars
    • Across → Full Access
  • System Settings > Privacy & Security > Reminders
    • Across → On

5. Third-Party Calendar Accounts

  • System Settings > Internet Accounts > Add Account
    • Add Google, Naver, etc. directly

6. Launch Across

Open Across and confirm your calendar and reminders are syncing properly.

🔄 Manual Sync Tip (Mac)

If sync doesn’t seem to reflect:

  • Launch the Apple Calendar app This may trigger a background sync with iCloud. Changes will be detected by Across shortly after.