APIs have transformed our digital world by connecting data, processes and people. There are thousands of APIs publicly available for creating innovative applications dealing with public services, health sciences, business, social media and many others. APIs can help in building these innovative/data-driven applications faster. TeejLab API Discovery is the only mobile application that provides a seamless way to find useful APIs from hundreds of publicly available APIs. This mobile application provides three key functionalities: (1) discovery of APIs, (2) real-time testing of APIs, (3) management of APIs from a security and compliance perspective by analyzing API inputs and outputs (responses).