International Journal of Environmental Research and Public Health Article A Smartphone App for Improving Mental Health through Connecting with Urban Nature Kirsten McEwan 1, Miles Richardson 1,* , David Sheffield 1 , Fiona J. Ferguson 1 and Paul Brindley 2 1 Human Sciences Research Centre, The University of Derby, Derby DE22 1GB, UK;
[email protected] (K.M.); D.Sheffi
[email protected] (D.S.); fi
[email protected] (F.J.F.) 2 Department of Landscape Architecture, The University of Sheffield, Sheffield S10 2TN, UK; P.Brindley@sheffield.ac.uk * Correspondence:
[email protected]; Tel.: +44-1332-593056 Received: 19 July 2019; Accepted: 7 September 2019; Published: 12 September 2019 Abstract: In an increasingly urbanised world where mental health is currently in crisis, interventions to increase human engagement and connection with the natural environment are one of the fastest growing, most widely accessible, and cost-effective ways of improving human wellbeing. This study aimed to provide an evaluation of a smartphone app-based wellbeing intervention. In a randomised controlled trial study design, the app prompted 582 adults, including a subgroup of adults classified by baseline scores on the Recovering Quality of Life scale as having a common mental health problem (n = 148), to notice the good things about urban nature (intervention condition) or built spaces (active control). There were statistically significant and sustained improvements in wellbeing at one-month follow-up. Importantly, in the noticing urban nature condition, compared to a built space control, improvements in quality of life reached statistical significance for all adults and clinical significance for those classified as having a mental health difficulty.