• Natalie Heynsbergh, Leila Heckel, Mari Botti, Seung Chul O, and Patricia M Livingston.
• School of Nursing and Midwifery, Faculty of Health, Geelong, Australia.
• JMIR Form Res. 2019 Apr 11; 3 (2): e10990.

BackgroundThere are few support systems available to informal carers who provide care to cancer patients. Smartphone apps have the capacity to reach large audiences and can provide information and support at a time convenient to carers.ObjectiveThe aim of this study was to design a smartphone app prototype for carers of adults with cancer.MethodsA multiple-method design was used to develop a smartphone app. Current and past carers of people with any type of cancer were recruited from a public hospital, a private hospital, and a carer organization, who participated in either a focus group or phone interview. Carers answered questions about items to include in an app to address supportive care needs identified. Using carers' feedback, a smartphone app was designed and tested. Beta testing was conducted using a convenience sample of participants who completed scenarios to inform the app's design, functionality, and usability. Scenarios were timed and marked as complete or incomplete. Participants completed a questionnaire about the usability of the app. Beta testing occurred in 2 stages-a paper-based version of the app and an app-based test using the participants' preferred device. Alpha testing was completed internally to ensure the functionality of the app. Data were collected between May 2016 and August 2017.ResultsA total of 33 carers participated in phone interviews and 12 in focus groups; their average age was 55 (SD 14) years, and 60% (27/45) were female. The majority of carers (76%, 25/33) had a positive attitude toward using smartphone apps. Carers noted that smartphone technology might improve their ability to seek information and support in managing their own health as well as the care needs of the person with cancer. Carers requested a variety of information and resources to be included in the app. Paper-based testing included the following: participants (N=10) were aged above 30 years (30%, 3/10), 30 to 49 years (30%, 3/10), and 50 years or above (40%, 4/10), and 60% (6/10) were male. Participants found the app user-friendly and pleasing in appearance. App-based testing included the following: participants (N=10) were aged above 30 years (20%, 2/10), 30 to 49 years (30%, 3/10), and 50 years or above (50%, 5/10), and 50% (5/10) were male. Participants reported the app to be user-friendly and easy to navigate. The majority (60%, 6/10) of participants were unable to create a shortcut icon to add the app to the home screen of their phone.ConclusionsCarers highlighted the needed information and support to assist them during the caring period; they also reported having a positive attitude toward smartphone apps. The Carer Guide App is currently undergoing a pilot study to further test usability among carers of people with 1 cancer type.©Natalie Heynsbergh, Leila Heckel, Mari Botti, Seung Chul O, Patricia M Livingston. Originally published in JMIR Formative Research (http://formative.jmir.org), 11.04.2019.

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