The case that something is wrong
In May 2023 the US Surgeon General issued an advisory on social media and youth mental health. Its most quoted line comes from a longitudinal study of adolescents aged 12 to 15: those who spent more than three hours a day on social media "faced double the risk of experiencing poor mental health outcomes including symptoms of depression and anxiety". The same advisory notes that, as of 2021, eighth and tenth graders spent an average of 3.5 hours a day on social media, and that up to 95% of 13 to 17 year olds use a platform, more than a third of them "almost constantly".
Teenagers themselves have noticed. In Pew Research Center's survey of US teens, published in April 2025, 48% said social media has a mostly negative effect on people their age, up from 32% in 2022. Only 14% said it has a mostly negative effect on them personally, and 45% said they spend too much time on it.
Adults have a parallel problem. The Surgeon General's other 2023 advisory, on loneliness, reported that about one in two American adults said they were lonely even before the pandemic, and that lacking social connection can raise the risk of premature death about as much as smoking up to 15 cigarettes a day. Being more connected than ever, on paper, has not made people less alone.
Why "hours online" is the wrong unit
The honest caveat comes first. When researchers pool the large studies, the average link between how much people use social media and how they feel is small. A 2020 review of meta-analyses by Appel, Marker and Gnambs found associations "in the r = .10 range" between intensity of use and loneliness, self-esteem, life satisfaction or depression. That is not nothing, but it is not the whole story of a generation either.
A small average hides the more useful question: which part of it? Studies that look at what people do, instead of for how long, find sharper effects.
Comparison
A 2019 set of four meta-analyses by Yoon and colleagues found that time spent and checking frequency were linked to depression with a small effect, but social comparison on social networks showed a small-to-medium effect, and upward comparison (measuring yourself against people who seem to be doing better) a medium one. In the authors' words, both kinds of comparison "were more strongly related to depression than was time spent".
The same pattern turned up inside Facebook. Internal research reported by the Wall Street Journal in 2021 included a slide saying: "Thirty-two percent of teen girls said that when they felt bad about their bodies, Instagram made them feel worse." Meta disputed how the finding was framed, and the figure is about girls who already felt bad, not all girls. But it describes the mechanism precisely: a feed of other people's best pictures is a comparison machine.
Passive scrolling
Verduyn and colleagues ran two studies in 2015, one in a lab and one sampling people's experience through the day. Using Facebook passively, browsing rather than exchanging anything, led to declines in how people felt over time, and envy explained the effect. Scrolling through other people's lives is not the same activity as being in touch with them, even though it happens in the same app.
Displacement
Two experiments show what happens when the scrolling stops. Hunt and colleagues in 2018 randomly assigned 143 University of Pennsylvania students to limit Facebook, Instagram and Snapchat to ten minutes a platform a day for three weeks. The limited group showed significant reductions in loneliness and depression compared with those who used social media as usual.
At much larger scale, Allcott, Braghieri, Eichmeyer and Gentzkow ran an experiment with 2,743 Facebook users in 2018, in which a randomly chosen group deactivated their accounts for four weeks. Deactivating freed about 60 minutes a day for the average person, who spent more of it with friends and family. Subjective wellbeing rose by 0.09 standard deviations, which the authors call small but significant, and use of Facebook stayed lower after the experiment ended.
What an app would have to refuse
Read together, the findings give a design brief more useful than "use your phone less". A social app that wanted to keep what is good about being in touch, and drop what the evidence points at, would have to refuse:
- Anything to compare. No photos of other people's lives, no follower counts, no like counts, no public profiles to measure yourself against.
- An audience. Nothing you post should be scored, ranked or seen by strangers, so there is nothing to perform.
- A feed. No endless stream of other people's content, and so no passive scrolling to fall into.
- An open-ended session. The app should run out of new things to show you, and say so, rather than being engineered to never end.
- Engagement as the goal. Time spent is what feeds are optimised for. An app on the other side of this research has to be finished quickly by design.
And it would have to keep the thing the loneliness research says people lack: a real sense of how the people close to them are.
Where weathr stands
weathr is built from that list. You say how you are with one tap, one of five weather symbols, and a group's moods are drawn together as a sky. There are no photos, likes, followers, public profiles, feed, ranking or direct messages, so there is nothing to compare and nothing to perform. The live view lasts between an hour and a day after you say how you are, then the sky stops moving until you say something again: there is no endless middle to fall into. See social media without likes and a social app that doesn't want your time.
What weathr cannot claim is that it improves anybody's mental health. No study has tested it, and the evidence above is about what to take away, not proof that anything put in its place helps. The claim is narrower and checkable: the mechanisms the research points at are not in the app.
Sources
- Office of the US Surgeon General (2023). Social Media and Youth Mental Health.
- Office of the US Surgeon General (2023). Our Epidemic of Loneliness and Isolation.
- Faverio, Anderson and Park, Pew Research Center (2025). Teens, Social Media and Mental Health.
- Appel, Marker and Gnambs (2020). Are social media ruining our lives? A review of meta-analytic evidence. Review of General Psychology 24(1). doi:10.1177/1089268019880891
- Yoon, Kleinman, Mertz and Brannick (2019). Is social network site usage related to depression? A meta-analysis of Facebook–depression relations. Journal of Affective Disorders 248. doi:10.1016/j.jad.2019.01.026
- Wells, Horwitz and Seetharaman (2021). Facebook Knows Instagram Is Toxic for Teen Girls, Company Documents Show. The Wall Street Journal, 14 September.
- Verduyn et al. (2015). Passive Facebook usage undermines affective well-being. Journal of Experimental Psychology: General 144(2). doi:10.1037/xge0000057
- Hunt, Marx, Lipson and Young (2018). No More FOMO: Limiting Social Media Decreases Loneliness and Depression. Journal of Social and Clinical Psychology 37(10). doi:10.1521/jscp.2018.37.10.751
- Allcott, Braghieri, Eichmeyer and Gentzkow (2020). The Welfare Effects of Social Media. American Economic Review 110(3).