An organisation’s dynamic capabilities illustrate how the organisation renews its competencies in response to the evolving environment. This study explored the effect of mobile app usage on the dynamic capabilities (DCs) of SMEs in Nigeria from a critical realist viewpoint. Although literature suggests that mobile apps are used by SMEs, the elusiveness of mobile app usage in developing country contexts requires the investigation of the underlying mechanisms that explain how mobile apps enhance the DCs of SMEs. Using content analysis and retroduction, the study evaluated interview responses from 16 SMEs covering 5 states in Nigeria. The study revealed that mobile apps are used in SMEs in Nigeria (in the real domain) to carry out business processes (in the actual domain) using their DCs (in the empirical domain) for sensing business opportunities. The study suggests that despite the existence of government support for SMEs across Nigeria, these programmes are generally inaccessible and do not include the important ICT or mobile app elements. The study recommends the need for a contextual mobile app suited for SMEs in developing country contexts such as Nigeria.