Okavanggo is a multi-vendor mobile application built on both iOS and Android platforms. Its name is derived from a very famous river delta located in Botswana, Africa. The client is from London, United Kingdom and wanted to launch the application in African countries. Internet connectivity is always a big problem in Africa so the mobile app was kept light to have high performance even in 3G networks. Okvanggo is a multi-category product apps but just like any other start-ups the client started with selling one product category in the beginning (books in this case). The app is built on Flutter platform.