Validation and evaluation of a tablet-based dietary record app for adults aged 70 and above

The NuMob-e-App demonstrated good relative validity for assessing energy, carbohydrate, and protein intake, as well as selected food groups in older adults. While equivalence was not achieved across all 44 variables, agreement was particularly strong for protein and beverages. A general tendency toward intake underestimation by the app was observed. These findings support the app's potential for use in preventive dietary self-monitoring among seniors.