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Methods: We screened apps on the Google Play Store and the French Apple App Store, from March 10 to 17, 2021, to identify those related to nutritional health. Objective: The aim of this study was to review which nutrition-related mobile apps are currently available on the French market and assess their quality. Although hundreds of nutrition-related mobile apps have been created, and these have been downloaded by millions of users, the effectiveness of these technologies on the adoption of healthy eating has had mixed The presence of user-generated database entries implies that the availability of food products might vary depending on the size and diversity of an app’s user base.īackground: The global burden of disease attributes 20% of deaths to poor nutrition. Whereas popular diet apps with barcode scanners might be valuable tools for dietary assessments on the product and energy level, they appear less suitable for assessments on the nutrient level. While energy was the most consistently and accurately reported value, the availability and accuracy of other values varied greatly between apps. The accuracy of the provided nutrient values varied greatly between apps and nutrients. MyFitnessPal also showed the largest percentage of correctly identified products (i.e.

MyFitnessPal provided values for sixteen nutrients, while Virtuagym Food and Yazio provided values for only four nutrients. Seven diet apps with barcode scanner and food recording feature were selected from the Google Play and Apple app stores.Įnergy values were available for 99 % of the scanned products, of which on average 79 % deviated not more than 5 % from the true value. Using the barcode scanners of the selected apps, the products were scanned and the results recorded as food diary entries. One hundred food products were selected from the two largest supermarket chains in the Netherlands.

Product identification rates for the scanned products and the availability and accuracy of nutrient values were calculated. The quality of labelled food product databases underlying popular diet applications (apps) with barcode scanners was investigated.