Completed

QuitBet Phase II: A Digital Social Game That Pays You to Stop Smoking

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What is being tested

contingency management (deposit contract)

+ leaderboard and social feed

+ smoking cessation resource list

Behavioral
Who is being recruted

Behavior

+ Health Behavior

+ Smoking Cessation

Over 21 Years
+9 Eligibility Criteria
See all eligibility criteria
How is the trial designed

Treatment Study

Interventional
Study Start: November 2021
See protocol details

Summary

Principal SponsorWayBetter, Inc.
Last updated: January 28, 2026
Sourced from a government-validated database.Claim as a partner

Study start date: November 1, 2021

Actual date on which the first participant was enrolled.

This study is a randomized controlled trial (RCT) of QuitBet, a digital contingency management program for smoking cessation. QuitBet combines social gaming elements with participant-funded financial incentives in the form of a deposit contract. QuitBet "players" deposit (called the "bet") a specified amount of their own money into the game's "pot." All "winners" who achieve the game's goal split the pot equally, such that their bet is fully refunded plus they receive extra money from the forfeited bets of players who did not meet the goal. Participants (N = 550) will be randomly assigned to QuitBet or QuitBet-NS (deposit contract only, no social elements). All participants will be offered a second game after their first game (up to 8 weeks total game duration) and will be asked to complete a survey after each game and at 1 and 4 months after the end of the second game (3 and 6 months after the start of their first game). The study will compare QuitBet vs. QuitBet-NS on smoking behavior outcomes and examine potential mediators of outcomes such as motivation, engagement, and satisfaction.

Official TitleQuitBet Phase II: A Digital Social Game That Pays You to Stop Smoking
NCT05075213
Principal SponsorWayBetter, Inc.
Last updated: January 28, 2026
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details

246 patients to be enrolled

Total number of participants that the clinical trial aims to recruit.

Treatment Study

These studies test new ways to treat a disease, condition, or health issue. The goal is to see if a new drug, therapy, or approach works better or has fewer side effects than existing options.

Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria

Any sex

Biological sex of participants that are eligible to enroll.

Over 21 Years

Range of ages for which participants are eligible to join.

Healthy volunteers not allowed

If individuals who are healthy and do not have the condition being studied can participate.

Conditions

Pathology

BehaviorHealth BehaviorSmoking Cessation

Criteria

9 inclusion criteria required to participate
Sufficient English fluency to complete study procedures
At least 21 years of age
U.S. resident of any state
currently smokes at least 5 cigarettes per day
Show More Criteria

Study Plan

Find out more about all the medication administered in this study, their detailed description and what they involve.
Treatment Groups
Study Objectives

2 intervention groups are designated in this study

This study does not include a placebo group 

Treatment Groups

Group I

Experimental
QuitBet is a quit smoking game delivered via a smartphone application that lasts 28 days and includes contingency management in the form of a deposit contract, integrated exhaled breath carbon monoxide (CO) testing, a social feed on which "players" can post and respond to messages, and a "leaderboard" that displays players' status (i.e., whether they are still eligible to win). A game host will post educational information about smoking cessation and serve as a discussion moderator. Participants will deposit ("bet") $30 of their own money at the start of the game. Participants who submit a CO test that is 6ppm or lower (indicating no smoking) on at least 24 of the 26 days between day 3-28 will be declared winners and will split the pot of money that was deposited. All participants who submit at least 21 CO tests during the 28 day game, regardless of the CO test result, will be entered into a lottery to win a prize worth $75.

Group II

Active Comparator
QuitBet-NS will include the deposit contract and integrated CO testing with identical rules to QuitBet for being a winner, the $75 raffle for submitting at least 21 CO tests, a display of the participant's daily CO test results that is updated in real time, and a game feed on which only the game host has the ability to post. Players will not be able to post on this feed or respond to the host's posts. At the beginning of the game, the host will post limited information, including a list of smoking cessation resources. QuitBet-NS will NOT include the social feed, leaderboard, or any other social features.

Study Objectives

Primary Objectives

Secondary Objectives

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.

This study has 1 location

Suspended

WayBetter

Wilmington, United StatesOpen WayBetter in Google Maps
CompletedOne Study Center