You can share with any other Fulcra user. They need a Fulcra account, but they don't need the iOS app — they can see what you've shared in Context Web, or work with it through their own agents.
A share is a slice, not a switch. You choose which data types to include, or which files and folders, and you can limit it to a date range so it covers only the period that matters. You can share everything if you want to, but you don't have to. Different shares with the same person can cover different things.
They read it through their own account, and they never get credentials to any of your sources.
You'll need their Fulcra user ID to set a share up — see "Where can I find my User ID?"
You can do this in Context Web, or from the Fulcra CLI if you'd rather work in a terminal.