A major study of 1,627 European adults found that smartphone apps designed to help maintain weight loss didn’t work better than basic weight tracking and fitness monitoring. After 12 months, roughly half of all participants regained weight regardless of whether they used motivation-focused apps, emotion-control apps, or combined apps. According to Gram Research analysis, this randomized controlled trial suggests that digital-only tools may need significant improvements in engagement and personalization to truly help people keep weight off long-term.
Researchers tested whether a digital app designed to help people maintain weight loss actually works. They studied 1,627 European adults who had already lost at least 5% of their body weight and gave some of them access to special apps focusing on motivation, emotion control, or both. After one year, the results were surprising: the apps didn’t help people keep the weight off any better than a basic control group that just tracked their weight and used a fitness tracker. About half of all participants regained some weight, regardless of which app they used. This large study suggests that while digital tools have potential, they may need significant improvements to truly help people maintain long-term weight loss.
Key Statistics
A 2026 randomized controlled trial of 1,627 European adults found that specialized weight maintenance apps targeting motivation or emotion regulation produced no significant advantage over basic weight tracking and fitness monitoring at 12 months.
In the NoHoW trial of 1,627 participants, approximately 76% remained in the study at 12 months, with nearly half of all participants regaining weight regardless of intervention group, suggesting digital-only approaches may have limited effectiveness for long-term weight maintenance.
A 2026 study published in the Journal of Medical Internet Research found that men regained an average of 0.14 kg and women regained 0.54 kg of their previous weight loss over 12 months, with no significant differences between app-based interventions and control groups.
The NoHoW trial, a 2×2 factorial randomized controlled trial with 1,627 participants across three European countries, found no significant improvements in cardiometabolic markers (cholesterol, blood sugar, blood pressure) in any intervention group compared to the active control group.
The Quick Take
- What they studied: Whether smartphone apps teaching motivation techniques and emotion control strategies could help people keep weight off after they’d already lost at least 5% of their body weight.
- Who participated: 1,627 adults from the United Kingdom, Denmark, and Portugal who had successfully lost at least 5% of their body weight in the previous year and started with a BMI of 25 or higher (overweight or obese category).
- Key finding: After 12 months, none of the three intervention apps (motivation-focused, emotion-focused, or combined) performed better than a basic control group at preventing weight regain. About 76% of participants stayed in the study, and roughly half of everyone regained weight regardless of which group they were in.
- What it means for you: If you’re trying to maintain weight loss, current digital-only apps may not provide the extra boost you’d hope for compared to simply tracking your weight and staying active. You might benefit more from combining apps with other strategies like in-person support, professional guidance, or more personalized content tailored to your specific needs.
The Research Details
This was a large, carefully designed experiment called a randomized controlled trial, which is considered one of the strongest types of research. Researchers recruited 1,627 adults across three European countries who had already achieved meaningful weight loss (at least 5% of their starting weight) within the previous year. They randomly assigned participants to four different groups: one received an app focused on motivation and self-control, another got an app focused on managing emotions, a third group received both types of content combined, and a fourth group (the control group) received basic content, a simple weight-tracking tool, and a Fitbit fitness tracker.
The study lasted 12 months, and researchers measured how much weight people gained or lost during that time. They also looked at health markers like cholesterol and blood sugar levels. The researchers used something called “adaptive stratified sampling” to make sure the groups were balanced based on factors like sex, age, and starting BMI. This careful approach helps ensure that any differences between groups are due to the app itself, not differences in the people using it.
One important note: the study was “single-blind,” meaning participants knew which group they were in, but the researchers analyzing the data didn’t know which group was which until the analysis was complete. This helps prevent bias in how results are interpreted.
This research approach matters because weight loss maintenance is one of the hardest parts of weight management—many people can lose weight but struggle to keep it off long-term. By testing digital tools in a large, real-world setting across multiple countries, researchers could see whether these apps actually work in practice, not just in theory. The 2×2 factorial design (testing two different strategies, alone and combined) was particularly smart because it allowed researchers to see whether combining motivation and emotion strategies worked better than either alone. This type of rigorous testing is essential before recommending apps to millions of people.
This study has several strengths that make its findings reliable: it involved a large sample size (1,627 people), included participants from multiple countries, used random assignment to reduce bias, and measured actual weight change rather than just self-reported data. However, there are some limitations to consider: 24% of participants dropped out by the end of the year, which is fairly typical but means we don’t know what happened to those people. The study only followed people for 12 months, so we don’t know about longer-term effects. Additionally, the study was digital-only, so it doesn’t tell us whether combining apps with other support (like counseling or group programs) might work better.
What the Results Show
The main finding was disappointing for app developers: none of the three intervention groups (motivation, emotion, or combined) showed better weight maintenance than the active control group. In the per-protocol analysis (looking only at people who actually used the apps as intended), men regained an average of just 0.14 kg of their lost weight, while women regained 0.54 kg. While this sounds small, it’s important to remember that nearly half of all participants regained weight regardless of which group they were in.
The researchers did find one small effect: men in the motivation-focused group showed slightly better results than the control group. However, this difference was so small that it wasn’t considered clinically meaningful—meaning it wouldn’t make a real difference in someone’s health or appearance. The researchers emphasized that this small finding shouldn’t change the overall conclusion that the apps didn’t work as hoped.
When researchers looked at secondary health markers like cholesterol, blood sugar, and blood pressure, they found no significant improvements in any of the intervention groups compared to the control group. This suggests that the apps didn’t provide benefits beyond weight maintenance either.
The study tracked several other health measures beyond just weight, including cardiometabolic markers (factors related to heart and metabolic health). None of these showed significant improvements in the intervention groups compared to the control group. The researchers also conducted subgroup analyses to see whether the apps worked differently for men versus women. While men showed a slight advantage with the motivation intervention, this effect was too small to be considered meaningful. Overall, the secondary findings reinforced the primary conclusion: the digital interventions didn’t provide additional benefits over basic weight tracking and fitness monitoring.
According to Gram Research analysis, this study adds important evidence to a growing body of research suggesting that digital-only interventions for weight management have limitations. Previous research has shown that apps can be helpful for initial weight loss when combined with other support, but maintaining weight loss long-term is much more challenging. This NoHoW trial is notable because it’s one of the first large-scale, multi-country studies specifically testing whether apps focusing on motivation and emotion regulation could improve weight maintenance. The findings align with other recent research suggesting that digital tools alone may not be sufficient for long-term weight management without additional support or higher engagement strategies.
Several important limitations should be considered when interpreting these results. First, 24% of participants dropped out by the end of the study, which is fairly common but means we don’t know whether those who left had different outcomes. Second, the study only lasted 12 months, so we can’t say whether the apps might have helped over a longer period. Third, the study was digital-only, so it doesn’t tell us whether combining apps with other support (like counseling, group programs, or professional guidance) might be more effective. Fourth, the apps may not have been engaging enough—the study notes that future interventions might benefit from better engagement strategies. Finally, the study included only European adults, so results might differ in other populations with different cultures and healthcare systems.
The Bottom Line
Based on this research, if you’re trying to maintain weight loss, don’t rely solely on motivation or emotion-focused apps as your only tool. Instead, consider combining digital tools with other strategies: regular self-weighing and activity tracking (which the control group did and seemed to help), professional support from a doctor or dietitian, group programs or support communities, and lifestyle changes that address your specific challenges. The evidence suggests that a multi-pronged approach works better than any single tool alone. If you do use an app, look for ones that are highly personalized to your needs and have strong engagement features to keep you motivated.
This research is most relevant to people who have already lost weight and are struggling to keep it off, as well as healthcare providers recommending weight management tools. It’s also important for app developers and digital health companies to understand that current approaches need improvement. However, this study doesn’t mean apps are useless—it means they work best as part of a larger strategy rather than as standalone solutions. People who are just starting their weight loss journey may find apps more helpful, though this study didn’t test that scenario.
Based on this research, you shouldn’t expect to see major benefits from an app alone within 12 months. The study found that about half of people regained weight over a year regardless of which app they used. If you’re using an app, expect it to be a helpful tool alongside other strategies, but plan for ongoing effort and support. Real, lasting weight maintenance typically requires consistent attention over years, not just months.
Frequently Asked Questions
Do weight loss apps actually help you keep weight off?
A 2026 study of 1,627 people found that specialized weight loss maintenance apps didn’t work better than basic weight tracking and fitness monitoring. About half of all participants regained weight regardless of which app they used, suggesting apps work best as part of a larger strategy including professional support and lifestyle changes.
What’s the best way to maintain weight loss long-term?
Research shows combining multiple approaches works better than any single tool: regular weekly weigh-ins, consistent physical activity tracking, professional guidance from a doctor or dietitian, and addressing emotional eating patterns. Apps can help with tracking, but shouldn’t be your only strategy for maintaining weight loss.
Can emotion-focused apps help prevent weight regain?
A major 2026 trial found that apps specifically designed to help manage emotions didn’t reduce weight regain compared to basic tracking. Emotion management may be helpful, but apps teaching these skills alone weren’t enough to prevent weight regain in this study of 1,627 adults.
How much weight do people typically regain after weight loss?
In this study, men regained an average of 0.14 kg and women regained 0.54 kg of their previous weight loss over 12 months. However, nearly half of all participants regained weight, suggesting individual results vary widely and ongoing support is important.
What should I do if I’m struggling to keep weight off?
Don’t rely on apps alone. Combine weight tracking with professional support (doctor, dietitian, or counselor), join a support group, set specific weekly behavior goals, and address underlying emotional or lifestyle factors. The research shows this multi-pronged approach works better than digital tools by themselves.
Want to Apply This Research?
- Track your weight weekly (as the control group did) and log your physical activity minutes daily. The study found that basic weight tracking combined with fitness monitoring was as effective as more complex app features, so focus on consistency with these two simple metrics rather than trying to track everything.
- Use your app to set one specific, achievable behavior goal each week (like adding 30 minutes of walking or reducing sugary drinks) rather than trying to change everything at once. The study suggests that apps work better when they’re part of a concrete action plan you can actually follow, not just theoretical motivation or emotion strategies.
- Check your weight weekly and review your activity logs monthly to spot trends early. If you notice weight creeping back up, that’s your signal to increase support—perhaps by adding a counseling session, joining a support group, or consulting with a dietitian. Don’t rely on the app alone to solve the problem; use it as an early warning system.
This research describes a clinical trial testing specific digital interventions and should not be interpreted as evidence that all weight management apps are ineffective. Individual results vary, and apps may be helpful as part of a comprehensive weight management plan that includes professional support, dietary changes, and physical activity. If you’re struggling with weight maintenance or have concerns about your health, consult with your healthcare provider, registered dietitian, or qualified health professional before making significant changes to your weight management approach. This article summarizes research findings and is not medical advice.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.