Describes the participant's perception of the mobile app's ease of use, value as a resource, value of the divisional posts, app's ability to improve feelings of connectedness to the division, app's usefulness in completing tasks and the perception of its ability to assist in the transition onto the service. Describes the participant's perception of the mobile app's ease of use, value as a resource, value of the divisional posts, app's ability to improve feelings of connectedness to the division, app's usefulness in completing tasks and the perception of its ability to assist in the transition onto the service. Kristen M Chreiman et al. Trauma Surg Acute Care Open 2017;2:e000085 Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/