One space, two people
A partner does not get a companion app or a stripped-down viewer. They get Zohra, pointed at the same space: the same weekly page, the same timeline, the same keepsakes. It is one pregnancy, so it is one space.
They can add to it
A partner sees every keepsake, and can add notes and voice of their own — the timeline shows who added what. Ten years from now that attribution is most of the value.
There are no permission switches to configure. One setting nobody understands is worse than one rule everybody does.
Invited, and revocable
A space has exactly two members. Nobody joins without an invitation from you, and access can be ended.