Two years ago, Daniel Warui, a mathematics and computer science graduate and his two friends developed an app that uses lung sounds to accurately detect pulmonary tuberculosis, asthma and chronic obstructive pulmonary disease (COPD), a technology that could save millions of Africans.
They tested the app in about 250 health centres in Kenya but like most technology start-ups in Africa, Mr Warui, Erick Kirima and Lewis Wanjohi lacked the financial muscle and advanced skills to build their product into a Silicon-Valley kind success story.
