App aims to prevent disease and boost mental Well-Being in thousands

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: (i) aged 21 to 59 years, (ii) Singapore citizens, permanent residents, or foreigners residing in Singapore on long-term passes with at least 1 year of validity remaining, (iii) planning to reside in Singapore for the duration of the study (eligible participants can undertake sporadic trips overseas, as long as these do not conflict with in-person study visits), (iv) proficient in English (the LvL UP app is currently only available in English), (v) owners of a smartphone (minimum requirements: iOS version 12.4 and Android version 8) with internet access, (vi) able to provide informed consent, and (vii) identified as 'at risk' of developing non-communicable diseases and/or common mental disorders. Exclusion Criteria: (i) diagnosed with one of the following chronic diseases: heart disease (e.g., heart attack and stroke), cancer, chronic respiratory diseases (e.g., chronic obstructed pulmonary disease and asthma), diabetes (type 1 or type 2), or chronic kidney disease. (ii) diagnosed with one of the following mental disorders: major depressive disorders (depression), bipolar, eating disorders, post-traumatic stress disorder (PTSD), anxiety disorders, severe personality disorder, substance use disorders, or other mental health conditions diagnosed by a mental health professional. (iii) pregnant, (iv) currently taking medications prescribed for high blood pressure or high blood glucose. (v) past or current LvL UP users, including participants from the LvL UP pilot trial (NCT06360029) or HAPPY trial (Harnessing Human Potential and Improving Health Span in Women and their Children Trial). (vi) already participating or planning to participate in the LvL UP trial as a 'LvL UP Buddy\'. (vii) enrolled or planning to enroll in another lifestyle intervention research study before or during the study period.