True Digital Group is using SingleStore to power a contact tracing app in Thailand, which uses React and Web Workers in the frontend. The app processes fast ingestion of events and geospatial functions to plot data on a map in real-time. The solution was built in two weeks and aims to prevent the spread of COVID-19 by tracking how mass population moves from one part of the country to another. SingleStore provides a scalable backend, combining transactional and analytical databases, with specialized data types and functions supporting geospatial, time-series, document, and key-value use cases. The app supports queries by location over a recent history of data, allowing users to see trends over time. With SingleStore, True Digital Group can rapidly develop and iterate on the application, demonstrating new possibilities for analysis to support public health efforts.