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Can your phone app really track your calories? study puts apps to the test

NCT ID NCT05166226

Knowledge-focused Sponsor: Pennington Biomedical Research Center Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study checked how accurate two popular apps, PortionSize™ and MyFitnessPal, are at measuring energy and nutrients people eat in real-life settings. 45 adults used each app for separate periods, and their results were compared to a precise weighing method. The goal was to see if the apps give reliable numbers for tracking diet.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

45 people

The number who actually took part.

Started

Jan 2022

Finished

Mar 2026

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Healthy participants ages 18 to 62 in the Baton Rouge, LA area

Ages

18 to 62 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: Male or female, age 18-62 years * Body mass index (BMI) 18.5-50 kg/m2 * Subjects who are capable of giving informed consent and complying with all study procedures/requirements. * Ownership of an iPhone model 6s or later, which the participant is willing to use for the study * Access to Apple ID, password, and email address and willing to use them during the study * Willing to use data and any accompanying charges as part of study participation * Willing to complete all study procedures and adhere to study visit timelines * Willing to be re-contacted for future research and/or follow-up Exclusion Criteria: * Active cancer diagnosis (excluding some melanomas) * Have been 6-month weight unstable (gain/loss \>10 lbs in last 6 months) * Undergoing weight loss treatment * PBRC employee, as previous reviewers argued that they are not representative of the community * Women who are currently pregnant or breastfeeding (self-reported) * Diagnosed with an uncontrolled thyroid disorder (controlled = 3 months of medication) * Have had or plan to have weight loss surgery (gastric band removal may be allowed at PI discretion) * Allergic to or unwilling to eat study foods provided (exceptions made at the discretion of the PI) * Consume \>28 alcoholic beverages per week * Anyone severely immunocompromised * Any condition or circumstance that in the judgement of the PI could interfere with study participation

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Conditions

The condition(s) this trial relates to.

Feeding Behavior

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Dietary habits

Contacts and locations

Locations

  • Pennington Biomedical Research Center

    Baton Rouge, Louisiana, 70808, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.