Source of truth

One thing I’ve sought in my digital life, whether dealing with Calendars, tasks, or notes, is the importance of having a single source of truth. I don’t want to have two places to check things, where the data could conflict. When I go to add a calendar event I want to know it will be the same on another device. The same is true of a note, or a todo. Because I now use a watch, phone, tablet, and multiple laptops, it’s crucial that all of these be in sync to make sure I can trust them. Part of the reason I’m trying to go native on each app is I’m hoping the source of truth will become more trustworthy. We’ll see.