Mobile applications (apps) are increasingly being used as tools for preserving cultural knowledge, particularly in developing countries where traditional practices may be at risk of disappearing due to rapid urbanization and digital transformation. Fieldwork was conducted through semi-structured interviews with app developers, users, and local cultural leaders. Data were analysed using thematic content analysis to identify common themes and patterns related to the use of mobile apps in cultural preservation efforts. Findings indicate that Yoruba traditional knowledge initiatives have successfully leveraged mobile apps to engage a broader audience, including younger generations who are less familiar with their heritage. The proportion of users adopting these apps is particularly high among youth (75%). Mobile apps play a crucial role in cultural preservation by bridging the gap between older and younger Yoruba communities, thereby ensuring that traditional knowledge is not lost to future generations. Further research should focus on evaluating long-term impact of these mobile apps, as well as exploring how they can be integrated into formal education systems to enhance learning about Yoruba culture. Cultural Preservation, Mobile Apps, Yoruba Traditional Knowledge, Lagos, Nigeria