Design Guidelines of Mobile Apps for Older Adults: Systematic Review and Thematic Analysis (Preprint)

Author:

Gomez-Hernandez MiguelORCID,Ferre XavierORCID,Moral CristianORCID,Villalba-Mora ElenaORCID

Abstract

BACKGROUND

Mobile apps are fundamental tools in today’s society for practical and social endeavors. However, these technologies are often not usable for older users. Given the increased use of mobile apps by this group of users and the impact that certain services may have on their quality of life, such as mobile health, personal finance, or online administrative procedures, a clear set of guidelines for mobile app designers is needed. Existing recommendations for older adults focus on investigations with certain groups of older adults or have not been extracted from experimental results.

OBJECTIVE

In this research work, we systematically reviewed the scientific literature that provided recommendations for the design of mobile apps based on usability testing with older adults and organized such recommendations into a meaningful set of design guidelines.

METHODS

We conducted a systematic literature review of journal and conference articles from 2010 to 2021. We included articles that carried out usability tests with populations aged >60 years and presented transferable guidelines on mobile software design, resulting in a final set of 40 articles. We then carried out a thematic analysis with 3 rounds of analysis to provide meaning to an otherwise diverse set of recommendations. At this stage, we discarded recommendations that were made by just 1 article, were based on a specific mobile app and were therefore nontransferrable, were based on other authors’ literature (as opposed to recommendations based on the results of usability tests), or were not sufficiently argued. With the remaining recommendations, we identified commonalities, wrote a faithful statement for each guideline, used a common language for the entire set, and organized the guidelines into categories, thereby giving shape to an otherwise diverse set of recommendations.

RESULTS

Among the 27 resulting guidelines, the rules <i>Simplify</i> and <i>Increase the size and distance between interactive controls</i> were transversal and of the greatest significance. The rest of the guidelines were divided into 5 categories (<i>Help &amp; Training</i>, <i>Navigation</i>, <i>Visual Design</i>, <i>Cognitive Load</i>, and <i>Interaction</i>) and consequent subcategories in <i>Visual Design</i> (<i>Layout</i>, <i>Icons</i>, and <i>Appearance</i>) and <i>Interaction</i> (<i>Input</i> and <i>Output</i>). The recommendations were structured, explained in detail, and illustrated with applied examples extracted from the selected studies, where appropriate. We discussed the design implications of applying these guidelines, contextualized with relevant studies. We also discussed the limitations of the approach followed, stressing the need for further experimentation to gain a better understanding of how older adults use mobile apps and how to better design such apps with these users in mind.

CONCLUSIONS

The compiled guidelines support the design of mobile apps that cater to the needs of older adults because they are based on the results of actual usability tests with users aged &gt;60 years.

Publisher

JMIR Publications Inc.

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