. 2021 Apr 20;9(4):e21085. doi: 10.2196/21085
©Stoyan R Stoyanov, Oksana Zelenko, Aleksandra Staneva, David J Kavanagh, Calvin Smith, Gavin Sade, Jessica Cheers, Leanne Hides. Originally published in JMIR mHealth and uHealth (https://mhealth.jmir.org), 20.04.2021.
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Figure 7.
App features to increase engagement.