Patients must read, agree to, and sign a statement of informed consent prior to participation in this study; patients who do not read or understand English are eligible and may be consented according to institutional and federal regulations Non-English speakers are excluded from this study English speaker Must be able to read and understand English Non-native English speakers will be excluded Speaks and read English In the judgment of the investigators and/or consenting professional, able to read and comprehend English Subjects who cannot read or understand English English speaker Must be able to read and understand English in order to participate in the quality of life surveys; if patient does not read and understand English, the patient is still eligible, but cannot participate in the quality of life surveys Inability to read in English Subjects have to be able to read and understand English Ability to read and understand English and the ability to complete paper +/- electronic survey assessments Be able to read English Be able to read and understand English Patient does not understand English Able to read and understand English FOCUS GROUP: English-speaking as English proficiency screener and in the best judgment of\r\nthe consenting professional. This is due to the focus groups being managed in English and\r\nthe use of certain validated questionnaires only being available in English. The ability to respond to questions English Patient/caregiver has the ability to read and understand English at a sixth grade level, as determined by his/her ability to understand the consent form Able to read and understand English Inability to understand English Lack of ability to read and converse in English Able to read English PATIENTS: Ability to read and respond to questions in English CAREGIVERS: Ability to read and respond to questions in English Able to read and understand English English speakers Able to understand English Proficient in English PATIENT: Able to read and understand English CAREGIVER: Able to read and understand English Able to read and understand English Patients who are able to understand written and verbal English Able to read and understand English Can read and provide informed consent in English PATIENTS: Unable to read and respond to questions in English. CAREGIVERS: Unable to read and respond to questions in English. Cannot participate in or understand English Patients are required to read and understand English to comply with protocol requirements Able to read/understand English and give consent Patients are required to read and understand English to comply with protocol requirements In the judgment of the investigators and/or consenting professional, able to read and comprehend English Unable to read and respond to questions in English Caregiver exclusion criteria:\r\n* Unable to read or respond to questions in English\r\n* Unable to complete the baseline interview Patient is able to understand and read English In the judgment of the investigators and/or consenting professional, able to read and comprehend English Proficient in English YBCS: Able to read English PARTNER: Able to read English Able to read and understand English Patients must have the ability to understand and read English, sign a written informed consent, and be willing to follow protocol requirements Non-English speaking or inability to read and understand English Must understand and read English, sign a written informed consent, and follow protocol requirements Must be able to understand English Patients must have the ability to understand and read English, sign a written informed consent, and be willing to follow protocol requirements. Must understand and read English, sign a written informed consent, and follow protocol requirements Have sufficient command of English to permit testing Able to read and understand English Be able to understand English Participants must understand and read English or Spanish Participant must be comfortable conversing in English (reading and writing in English is not required) Able to read in English Able to read English Non-English speakers English speakers Prospective study: Able to understand and read English Inability to read, speak, and understand English (because the content of the app is in English and the measures being used in the study are in English) Able to read and understand English (to complete required questionnaires and participate in classes) Limited English proficiency All participants need to understand and read English and have the capacity to consent Ability to read and respond to questions in English Able to read and respond to questions in English Patients unable to read written English Be able to see and read printed documents in English English speaking and able to read English (to complete required questionnaires) Patients will be accrued using the following inclusion criteria:\r\n* Scheduled to undergo partial or total gastrectomy for treatment of gastric cancer\r\n* Able to read and understand English Due to the intervention being in English, non-English speakers will be excluded They must understand written, verbal, and/or recorded survey questioning English Able to read English on a computer screen Must be able to understand English Able to understand English Able to read and understand English Able to understand and read English Be able to read English PATIENTS: Able to read and understand English INFORMAL CAREGIVERS: Able to read and understand English Ability to read or understand English Patients must have the ability to use audio media and read and understand written English Patients unable to read written English Be able to read English (since the assessment materials are in printed format). Read and understand English Patients must have the ability to understand English, Mandarin, or Taiwanese English speakers Unable to read English PRELIMINARY TEST: Required to read and understand English and have the ability of provide informed consent Individuals who do not speak, read/write English will be excluded because FLARE involves regular interaction between study staff and research participants in English and completion of study questionnaires and interviews in English Able to read/understand English at or above a level sufficient to comprehend recruitment and intervention materials PHASE I: Able to read and understand English STUDY II: Able to read English Being able to read English Must read and understand English fluently Be able to read English Patients must be able to read and comprehend English; non-English-speaking patients may participate so long as an interpreter (e.g., family member, clinic staff, etc.) is present for consent, for the decision aid administration, and gathering of baseline and follow-up measures Ability to read English (to fill out standard quality of life [QOL] forms) Recruit in English Reasonably able to read a newspaper or book (without sight impairment) Must be able to read and write English, since the study questionnaires are currently validated only for English-speaking populations\r\n* Note: there will be no constraints on the quantity of cigarettes participants typically smoke on smoking days (since this is often variable and is not a distinguishing feature of non-daily smokers) Able to read English on a computer screen