Students at Zambian universities buy and sell constantly — textbooks at the start of term, electronics at the end of it, clothes and services all year — and all of it happens in WhatsApp groups where a listing disappears the moment someone else posts.
CampusCart gives that trade a permanent home: listings that stay findable, categories that make sense for a campus, seller profiles that build reputation, and push notifications when something you are watching drops in price.
It started on a hosted backend and was rebuilt onto a Go API — the kind of migration that is invisible to users and is the difference between a project and a product. The web app is Next.js; the Android app is React Native, published to the Play Store.