KidShare.

KidShare gives two households one record of the kids' lives. A parent logs a cost and picks the split, and KidShare keeps a running statement of who owes whom, including recurring expenses and recorded payments. The custody calendar shows who has the kids each day and when the next handover is. Messages and family rules live next to the money. Built with React 19 on a Convex backend, installable as a PWA with push notifications, and deployed on Vercel.