“…Fogg, 2002). Table 1 lists eight mobile app projects intended to encourage voluntary travel behaviour changes (Anagnostopoulou et al, 2018;Bie et al, 2012;Broll et al, 2012;Froehlich et al, 2009;Gabrielli & Maimone, 2013;Hu et al, 2015;Jariyasunant et al, 2013Jariyasunant et al, , 2014Jylhä et al, 2013;Mattheiss, 2015;Poslad et al, 2015;Schrammel et al, 2013;Tsirimpa et al, 2019) The app design of those studies followed or fitted in the Persuasive Systems Design model (PSD) (Brynjarsdóttir et al, 2012;Oduor & Oinas-Kukkonen, 2019;Oinas-kukkonen & Harjumaa, 2009;Schneider, Moser, Butz, & Alt, 2016), which offers a way to analyse, design and evaluate the persuasion context. Common persuasive design features used in those studies were personalised feedback, self-monitoring, challenges and goal-setting, social comparison, and rewards.…”