That said, in a study that looked at nearly 24,000 app users who have body weights considered obese or overweight, those who were obese lost 5 percent of their body weight within 62 days of using the app, according to the Journal of Obesity & Metabolic Syndrome in December 2021. What many apps don't do, another study, published in July 2019 in JMIR mHealth uHealth concluded, is provide users with behavioral change techniques, which is necessary to help people keep weight off in the long term. Another previous article outlining research on young adults came to a similar conclusion.

For instance, a previous study suggested that while apps may be useful for a certain type of vigilant dieter, the average overweight person will probably not lose weight on them. Of course, there are downsides to weight loss apps, too. You can also use them to get more know-how about nutrition labels and what macronutrients they contain if you’re trying to follow a specific diet.

“Weight loss apps can help people become aware of what they’re actually eating, as well as the number of calories they consume, which is helpful because we generally underestimate the number of calories in some foods,” says Deena Adimoolam, MD, an endocrinologist in Fair Lawn, New Jersey. And in some cases, more info is actually a weight loss tool. We’re obsessed with knowing everything that goes into our bodies (calories along with macronutrients like carbs, fat, and protein), the calories we’re burning via exercise, how many steps we’re taking, our hydration status, sleep - you name it.

Sites like myfitnesspal