App-tastic eating: phone tool tries to nudge us toward greener plates
NCT ID NCT06833736
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested whether a smartphone app can help working adults eat more plant-based foods and less meat. 147 participants were split into three groups: one with no app, one with the basic app, and one with an enhanced app offering recipes and tips. The main goal was to see if people would actually use the app and find it helpful, not to prove health outcomes.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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147 people
The number who actually took part.
- Started
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Feb 2025
- Finished
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Jul 2025
- Lead sponsor
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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.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide 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: * Have a personal (not work) smartphone * Have access to WiFi at home * Have an out-of-home data package * Be 18 years of age or older Exclusion Criteria: * Underweight for their age and gender * Follow a restrictive diet (e.g., pregnant, breastfeeding, food intolerant/allergic, attempting to lose weight, diabetes, cardiovascular disease, or other long-term disease including eating disorders) * Have a mental disability or learning difficulty
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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London School of Hygiene & Tropical Medicine
London, United Kingdom
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Other studies related to the condition(s) this trial covers.
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