The new analysis looked at 19 studies that tested whether things like text messages, web-based prompts, or wearable step trackers could nudge people to increase their levels of physical activity. Across all of the studies, the behavioral tools were not effective for people with low socioeconomic status, even when they worked well for wealthier people. That pattern held across every type of approach tested.

Wetsman, N. (2021, November 16). Health apps and wearables help rich people the most, study finds. The Verge. https://www.theverge.com/2021/11/16/22785163/digital-health-physical-activity-inequity

Check out the original meta-analysis: The effectiveness of digital interventions for increasing physical activity in individuals of low socioeconomic status: a systematic review and meta-analysis