Objective: There is growing evidence that hand-held touchscreen devices (tablets) can support people with mild dementia to manage their life and engage in meaningful activities. However, as it can be difficult to find apps that match one’s personal needs, wishes and abilities, a person-centred selection tool was developed, called FindMyApps. Method: To ensure its usability, the FindMyApps selection tool was developed using a ‘user-participatory design’ in which users (persons with dementia and informal carers), and experts (designers, developers and researchers) closely collaborated. In three short iterative rounds – so called ‘sprints’ – the users were invited to test whether the prototypes harmonised with their needs, wishes and abilities. Results: Each sprint provided insight into potential improvements of the tool. The development team gained an understanding of issues regarding usefulness (e.g. meaningful content of (sub)categories for apps in domains of self-management and meaningful activities), as well as issues to increase the user-friendliness (e.g. intuitive design with instructive navigation support). Conclusion: The FindMyApps selection tool was conceived as a means to make it easier for people with mild dementia to select apps meeting their needs, wishes and abilities. This provisional end version will be further tested, and, if necessary, improved in a feasibility study.