Switchini lets neighbours swap, donate and pass on clothes locally. Users list an item in 5 guided steps, browse what is nearby on a feed or a map, propose a swap or ask for a donation, then agree on a meetup in the chat. Community events, family profiles with kids' sizes and in-app Pro subscriptions round it out, in French, English and Arabic (right to left). React Native app (TypeScript, Redux-Saga, Socket.IO, Firebase push, in-app purchases), a Next.js admin and a NestJS + MongoDB API.