An Address-Update Checklist for People Who Just Moved

The idea

Every time you move you have to update your address with the bank, the DMV, your insurance, subscriptions, doctors, and a dozen other places, and there's no single list of who needs to know. I want a simple checklist tool you fill in once with your old and new address, and it tracks which accounts you've updated and nudges you about the ones you haven't after a week or two. Not a moving company, just the boring paperwork trail that comes after the move.