Two open pages
The week is split down the middle, so you read days the way you read a planner.

This is the week view in Henkq, on iPhone. It is a book, not a grid you pinch. Today is marked in red. Appointments stay on the day they belong to. If you prefer less motion, the week slides instead of curling.
The week is split down the middle, so you read days the way you read a planner.
Move to the next week and the page turns, with the curl in the middle.
Open the week there too. The book on iPhone is the one that curls.