Researchers checked out 3,000 exercise and weight-loss programs, which had been downloaded a total of 600 million times worldwide.
Despite their huge popularity, there was a dearth of scientific evidence for any actually helping to battle the bulge.
Nutrition expert Prof Mike Lean explained the findings.
“There is no published data on effectiveness of apps for weight management or weight-gain prevention,” he said.
The research was revealed at the European Obesity Summit in Gothenburg, Sweden.
It comes after The Sun revealed calorie trackers are wildly inaccurate.
The study found that fewer than one per cent of fitness apps, which mostly monitor weight, exercise levels and calorie intake, have been developed by a certified health body.
Market leader Fitbit, Noom Weight Loss Coach and MyFitnessPal were among those examined by researchers, including obesity experts from Glasgow University.
Eight per cent of Brits have an exercise band or smartwatch to track their fitness.
Most spend around $260 on them.
Prof Lean demanded a robust new scientific approach.
“Apps on advice for weight management are very popular,” he said.
“They offer a huge opportunity to provide effective weight control.
“But all lack certified content or evidence of effectiveness.”
This article was originally published on news.com.au
