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Can an AI-Powered app beat stress? new study puts 'Harmony' to the test

NCT ID NCT06744452

Symptom relief Sponsor: University of Witten/Herdecke 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tested whether a smartphone app called Harmony can help people with high stress levels feel better. Over 250 adults used the app for 12 weeks, which offered videos, audio, and reading materials tailored to their needs. Researchers measured changes in stress, well-being, and coping skills at 6 weeks and 12 months.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Harmony app (digital self-help intervention with AI-personalized content)
What this could lead to
If effective, the Harmony app could offer a convenient, low-cost tool for people to manage everyday stress and improve mental well-being.
What could go wrong
This is a small, completed pilot study without a control group, so results may not be definitive. Benefits may depend on how often people use the app, and long-term effects are unknown.

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.

Phase

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

251 people

The number who actually took part.

Started

Nov 2024

Finished

Mar 2025

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.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

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: * Increased stress level (PSS-10 \>= 19; corresponds to one standard deviation (SD 6.42)) above the mean (PSS-10 = 12.57) in a representative sample of the German population (Klein et al., 2016) * Fulfillment of technical minimum requirements (internet and smartphone access with suitable operating systems) * German language skills at a native level or the ability to use the language at at least B level * Written informed consent to participate in the study after being informed about the study Exclusion Criteria: * Inclusion criteria not met.

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Conditions

The condition(s) this trial relates to.

Psychological Well-Being

As listed by the trial registrant

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

Goal achievement Resilience, psychological Self-efficacy Stress Well-being, psychological

Contacts and locations

Locations

  • Witten/Herdecke University

    Witten, North Rhine-Westphalia, 58455, Germany

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