FlipperForce offers two types of calendar integration links. Both work with Google Calendar, Microsoft Outlook, and Apple Calendar, and both are a one-way, read-only sync.
Workspace Calendar link
Syncs the schedules, tasks, and events from every project you have access to in your workspace. Everything arrives in your external calendar as a single calendar.
Project Calendar link
Syncs the schedules, tasks, and events for one specific project. Each project you connect arrives as its own separate calendar in Google, Outlook, or Apple Calendar.
Copy this link from the project's Calendar page, under Project Management.
Read the full article: What's the difference between the Workspace Calendar and a Project Calendar integration?