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.

My fitness pal barcode