Introduction:
The Thai Health Promotion Foundation together with the Health Professional Alliance against Tobacco developed a smartphone program, the Thai-Rai-Kwan application (TRK-App) or Smoke-free Thailand application (SFT-App) for people of all ages to connect with smoking cessation services. Since March 2016, the app has been free for download on both iOS and Android platforms.

Objectives:
This cross-sectional descriptive study aimed to assess the expectations and satisfaction for using the Thai Rai Kwan smoking cessation smartphone application (TRK-App) and to evaluate its effectiveness in encouraging people to quit smoking.

Methods:
The participants included 112 smokers, 18 years or older who smoked at least five cigarettes a day and had installed the TRK-App in their mobile phone. Data were collected through self-reported questionnaires answered from March to June 2018.

Results:
The participants had highest expectations for provision by the TRK-App of adequate smoking cessation information ( = 4.57; SD = 0.56) and ease of first time use ( = 4.51; SD = 0.52). Afterwards, the participants’ satisfaction level was highest for convenience of first time use ( = 4.53; SD = 0.51), but lowest for running the application smoothly. In terms of success in quitting smoking, the 7 day point-prevalence abstinence rate at a one month follow-up was 21.4%.

Conclusion(s):
The TRK-App provided positive results and enabled smokers to quit smoking. Healthcare providers such as nurses and physicians who have significant roles in promoting progressive smoking cessation methods and helping people to quit smoking, should adopt this effective smoking cessation application like TRK-App as a useful new tool for smokers.