1. Statista Research Department. Smartphone subscriptions worldwide 2016–2021, with forecasts from 2022 to 2027 [Internet] (2022). Available from: https://www.statista.com/statistics/330695/number-of-smartphone-users-worldwide/, Last accessed 21 October 2022.
2. Hicks, J. L. et al. Best practices for analyzing large-scale health data from wearables and smartphone apps. npj Digit. Med. 2, 45. https://doi.org/10.1038/s41746-019-0121-1 (2019).
3. Ceci, L. Google Play: Number of available medical apps as of Q3 2022 [Internet] (2022) Available from: https://www.statista.com/statistics/779919/health-apps-available-google-play-worldwide/, Last accessed 11 December 2022.
4. Pilgrim, K. & Bohnet-Joschko, S. Donating health data to research: Influential characteristics of individuals engaging in self-tracking. Int. J. Environ. Res. Public Health 19(15), 9454. https://doi.org/10.3390/ijerph19159454 (2022).
5. Data Bridge Market Research. Mobile Medical Apps Market to Observe Astonishing Growth of USD 38.47 Billion by 2029, Size Share, Key Players, Revenue Growth & Future Growth Outlook [Internet] (2022) Available from:https://www.globenewswire.com/news-release/2022/10/12/2533217/0/en/Mobile-Medical-Apps-Market-to-Observe-Astonishing-Growth-of-USD-38-47-Billion-by-2029-Size-Share-Key-Players-Revenue-Growth-Future-Growth-Outlook.html, Last accessed11 February 2022.