“…There were eight RCTs [ 43 , 47 , 49 , 51 – 54 , 56 ], nine non-randomised study designs [ 25 , 26 , 40 – 42 , 44 , 45 , 48 , 50 , 55 ] and two process evaluations [ 39 , 46 ] of dietary or lifestyle interventions primarily delivered by mobile applications on a range of outcomes ( Table 1 ). There were six reports of feasibility/usability [ 26 , 42 , 44 , 48 , 49 , 52 ], five for self-efficacy [ 40 , 43 , 47 , 49 , 56 ] and acceptability [ 42 , 44 , 49 , 52 , 56 ], and four for health related quality of life (HRQoL) [ 42 , 43 , 47 , 48 ], with positive effects generally reported for these outcomes ( Table 3 ).…”