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New app aims to help smokers kick the habit for good

NCT ID NCT05539209

Symptom relief Sponsor: University of Oklahoma 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 tested a smartphone app called OKquit to help smokers quit. About 500 adults who wanted to stop smoking were split into two groups: one got standard helpline support plus daily check-ins, and the other got that plus the OKquit app. The goal was to see if the app helped more people stay smoke-free over 27 weeks, using carbon monoxide tests to confirm.

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

512 people

The number who actually took part.

Started

Sep 2022

Finished

Sep 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

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: * Are ≥ 18 years of age * Expressed interest in participating in this study by allowing the OTH provider to share their contact details with the study research team * Valid Oklahoma residential address to mail study materials * Score of ≥ 4 on the Rapid Estimate of Adult Literacy in Medicine-Short Form (REALM-SF) * Willing to quit smoking within 21 days after the randomization phone call * Currently smoke ≥ 5 cigarettes per day * Agree to complete daily 30 second EMA check-ins and 27 weekly 3-5 minute smartphone-based surveys * Possession of an active smartphone that is compatible with the Insight mHealth Platform * Agree to complete the 27-week post-randomization follow-up assessment (which may include biochemical verification of smoking abstinence) * Provide evidence that they are a current smoker (e.g., text a picture of their pack of cigarettes when requested during the screening call) Exclusion Criteria: \-

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Conditions

The condition(s) this trial relates to.

nicotine dependence Smoking Cessation

As listed by the trial registrant

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

Smoking cessation

Contacts and locations

Locations

  • University of Oklahoma Health Sciences Center

    Oklahoma City, Oklahoma, 73104, United States

More trials for these conditions

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