MyCogHealth was developed to provide a reliable, efficient, and low cost approach for more accurately detecting subtle cognitive change. The MyCogHealth app permits more ecologically valid assessments of health behaviours and outcomes, well-being, and cognition by capturing these processes throughout an individual’s daily life, where and when it matters. MyCogHealth leverages the Apple Health app to provide a wide variety of survey questions, the app does not collect any health data from you, except for any questions asked in a study.