Litha Soyizwapi is a graphic designer and a self-taught app developer. His popular GauRider app is the quickest and most elegant way to manage commutes on Gautrain—the rapid transit railway system linking Johannesburg, Pretoria and OR Tambo International Airport in Gauteng Province, South Africa. Here, he talks about how graphic design taught him to think in disciplined ways he had never done before by forcing him to organise and visualize data.