Three roommates buy personal groceries separately but rotate responsibility for common basics. Their list is called “Flat supplies” and contains only items paid from the shared household budget.
The list has a clear boundary
Shared coffee, bin bags, washing-up liquid, and toilet paper belong on the list. Personal snacks do not. That agreement keeps the active list understandable and avoids turning it into an expense discussion.
Checked means already in the basket
The roommates agree not to check an item when merely planning a future shop. If something is unavailable, it remains active and the shopper sends a substitution question in chat.
The next shopper opens the same state
One roommate buys cleaning supplies after work and checks them off. Another opens the private link the next morning and sees only coffee and bin bags in the active section.
The record is cleared after everyone confirms
Completed items remain under Bought until the receipts and household handoff are settled. Then any roommate opens settings and clears the completed section without disturbing remaining groceries.