The shared expenses log
A monthly tracker for the costs both homes share, with a settle-up box. Money stays a list, not a conversation.
PDF, free to print and share. No email needed.

Shared money is rarely about the money. It is about keeping score, and the quiet sense that one home is carrying more than the other. The expenses log turns that into a plain list: date, what it was, who paid, and the share owed. At the end of the month, one settle-up box, one number.
Writing costs down as they happen does most of the work. The shoes, the school trip, the dentist, each goes on the line when it is paid, so nothing has to be reconstructed from memory or argued about later. The log is the record, and the record settles it.
Print one per month and keep it where both homes can see it, or use it as the template behind a shared note. Small and current beats large and disputed.
The calendar that keeps this pattern for you, for both homes, lives in dip.
See how dip works