Why I Built a Shared, Read-Only Calendar for Families and Small Teams

Why I Built a Shared, Read-Only Calendar for Families and Small Teams When you have multiple people, multiple calendars, and a busy schedule, coordination breaks down quickly. I built ComingUp.today after running into the same problem repeatedly: important events existed, but visibility didn’t. Someone always missed something, or found out too late that a conflict existed. This wasn’t a tooling problem — everyone already had a calendar. It was a shared awareness problem. The problem with “just share your calendar” Most calendar tools assume: Everyone is comfortable sharing full access Everyone wants to edit events Everyone checks the same app regularly In real life, that’s rarely true — especially for families or small teams. What people usually want is: A single place to see what’s coming up Without granting edit access Without replacing the calendar tools they already use A read-only aggregation approach The core idea