FAMI-KAN

FAMI-KAN is a completely free, browser-based group expense splitter built for real-world scenarios — family trips, Airbnb stays, group dinners, road trips, and roommate living. Zero registration. Zero downloads. Just share a URL and go. --- 🔥 Why we built this Every group outing ends the same way: someone's hunched over a calculator while everyone else enjoys the last hour of the party. We tried Splitwise — but the free tier now limits you to 3 transactions/day, forces 10-second video ads, and charges $40/year for basic features. Every other alternative requires all participants to install an app and create an account before they can even join. For a one-off BBQ or weekend trip, that's too much friction. So we built something different. --- ⚡ How it works 1. One person creates an event (no account needed) 2. Share the URL with everyone in the group 3. Anyone can log expenses directly from their phone browser 4. The app calculates the optimal settlement — the minimum number of transfers to clear all debts 5. Everyone gets one clear payment instruction No app store. No sign-up form. No paywall mid-trip. --- 🎯 Key features • Custom ratio splitting — Set "Adult 1.0, Child 0.5, Infant 0" so families with kids don't overpay. This single feature is why users switch from every other app. • Smart settlement algorithm — Instead of chaotic peer-to-peer transfers, the algorithm minimizes total transactions. 10 people can settle with as few as 4 transfers. • Group fund management — Collected money upfront? Track the pool against actual spending and auto-calculate refunds or shortfalls. • Multi-currency support — USD, EUR, JPY, GBP and more. Perfect for international group trips. • 8 languages — English, Japanese, Spanish, German, French, Portuguese, Hindi, Indonesian. • 300+ SEO blog posts — Covering every group expense scenario imaginable. • 100% free — No premium tier, no ads, no transaction limits. Ever. --- 🛠️ Built with Next.js 15 (App Router) · TypeScript · Supabase (PostgreSQL + RLS) · Vercel · next-intl · AI-assisted development (Vibe Coding) Built solo by a licensed architect from Japan with zero prior coding experience.