Trace works by using the accounts already connected to Apple’s default Calendar app. You don’t connect Google or Naver accounts directly in Trace — instead, once an account is added to the Apple Calendar app, it automatically becomes available in Trace as well.

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⭐ Automatically Synced Across All Devices with the Same Apple ID

For example:

• If you connect Google Calendar to the Apple Calendar app on your iPhone
• The same Google Calendar will automatically appear on your iPad and Mac signed in with the same Apple ID
• No need to reconnect the account on each device

In short, adding an external calendar on one device makes it available on all your devices.

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✅ How to Connect External Calendars on iPhone / iPad / Mac

Step 1. Add an account to the Apple Calendar app

Go to:

Settings > Apps > Calendar > Calendar Accounts > Add Account ← add the external calendar account you want to use.

Add an Account to the Apple Calendar app on iPhone / iPad

Add an account to Apple Calendar on Mac

Step 2. Allow access in Trace

After installing Trace, make sure to allow access to Calendars and Reminders.

• When prompted during setup, tap Allow Full Access
• You can also enable access manually in system settings:

Settings > Privacy & Security > Calendars > Allow Full Access for Trace ✅

Settings > Privacy & Security > Reminders > Allow Full Access for Trace ✅

iPhone / iPad

You can manage permissions from Settings on iPhone, iPad, and Mac.