Members of the Imperial College London and DigitalStitch team have published an article in the academic journal BMJ Innovations on their strategy to mHealth development. The Imperial ‘Clarify, Design and Evaluate (CDE)’ approach to the development of digital health solutions. Despite great enthusiasm for mHealth, there have been ongoing concerns regarding a lack of clinician involvement, end-user engagement and the lack of a robust evidence base, underpinning the development of many apps. In the article we present the CDE framework that supports the structured translation of an initial idea through to an effective app. The article is outlines the development of two apps using this approach so that other digital health innovators are aware of the requirement for well-conducted research, design and evaluation methods when implementing their apps. The article can be read in full here.