TripMoney

Web app for planning a group trip and sharing its costs. Each expense is split between participants, with tracking of who has paid and a per-person total. Expenses double as trip items: times, location, booking reference, status and attachments, shown as a table, an itinerary or a morning, afternoon and evening schedule. Each participant can protect their identity with a PIN hashed in the browser, optionally with fingerprint unlock through WebAuthn, and restrict an expense to selected participants so a surprise stays hidden from the others. Built with Next.js and Supabase (PostgreSQL database and attachment storage), deployed on Vercel.