Gustavo Riart has a degree in Compter Engineering from Universidad Americana de Paraguay and also studied computer science at the San Ignacio de Loyola School. TOPA stems from an idea as to how a solve a public transport problem in Paraguay. Poor planning means buses are often not on time, causing users to waste time. That loss affects people's quality of life, exposure to danger and their productivity. The Internet and the TOPA app display a map showing where the user is and where all buses are in real time within a three kilometer radius. This helps people know if the bus they are waiting for is close by. TOPA lets travelers filter by bus line, route, whether the bus has air conditioning and whether it is equipped for handicapped people, making the app more inclusive. Transport companies are provided with a fleet control platform. Users wait an average of 50 minutes at bus stops. It is estimated that there are 800,000 daily users of public transport in Paraguay, five percent of who now use this app. They gain time, safety and productivity. TOPA is used by 85 transport companies that monitor their pick-up and drop-off frequency, thus improving the service they provide.