Innovative Smartphone Application of a New Behavioral Method to Quit Smoking: Pilot Trial (Smart Quit)

Inclusion Criteria: * age 18 or older * smokes at least five cigarettes daily for at least past 12 months * wants to quit in the next 30 days * interested in learning skills to quit smoking * willing to be randomly assigned to either smartphone application * resides in US * has at least daily access to their own personal Apple iPhone 4, 4s, or 5 * knows how to login and download a smartphone application from Apple's "App Store" Store * willing and able to read in English * not participating in other smoking cessation interventions (including our other intervention studies) * has never used the NCI's Quit Guide smartphone application.\] * willing to complete one follow-up survey * provide email, phone, and mailing address. Exclusion Criteria: * The exclusion criteria are the opposite of the inclusion criteria above.