Validity of the PortionSize App for Assessing Children's Dietary Intake: Results From a Pilot Study Conducted in Controlled and Free‐Living Settings

Key Points

• The aim is to evaluate the accuracy and reliability of the PortionSize app for assessing children's dietary intake.
• Conducted a pilot study in both controlled and free-living settings.
• Involved children to assess their food and portion sizes using the app.
• Comparative analysis against traditional dietary assessment methods.
• The PortionSize app shows promising accuracy for dietary assessments.
• Users reported ease of use and engagement with the app.
• Findings suggest app effectiveness in controlled and everyday environments.