1. Go to Settings, then enter "General" > "Import" > "Subscribe Calendar".
2. Enable "Subscribe Calendar" > Tap "Add Calendar" and choose between Google Calendar or subscribe via URL.
Subscribe to third-party calendars in TickTick (Premium)
1. Go to Settings, then enter "General" > "Import" > "Subscribe Calendar".
2. Enable "Subscribe Calendar" > Tap "Add Calendar" and choose between Google Calendar or subscribe via URL.