Table 3.

Feedback on the developed wireframe by co-researchers attending Workshop 2.

1. First impressions (n = 17)a
• Very “childish” and not “teenish” and nice colors. I like how you have max temp and time and max UV and the time and date • It's good, it's a little hard to get to, but it runs smoothly like a everyday app
• I thought it was pretty cool to have an app that lets you know about some of the sun safe stuff
• The app was cool to look though but it was a bit boring and would have been better if there was some sort of games
• My first impression of the app was I thought it was really cute, but the colors could be more vibrant
• Looks cool
• I like how you can learn a lot and set sunscreen reminders and you can do quizzes and it sends you notifications on the UV ray
• It would be helpful if it was a real app • Boring, not much there
• I liked how there were many fun things to do and learn about in one app. The quiz was fun, and I liked the learning section too
• I like the way you can learn but have fun at the same time. The reminder set I really like and as well with the notifications
• I thought it looked cool and made me want to try it. The little pictures were also cute. It also looked fun • I think the app looks clean and modern (that's good). It was a little glitchy but it looked helpful
• I think the app looks really fun, cool, and helpful. The app took a while to load between the pages, but that was probably just the Internet
• I think it just needs more color, as in more images to get people's attention • I think it looked really good as it was simple and easy to follow
• I think the app is great and I would definitely use it when I went in the sun. I also recommend to use without Internet as some may not have access to it
2. What was missing?
• Theme 1: More variety in general • Theme 2: More colors and pictures • Theme 3: Shopping for sun health products • Theme 4: More quiz questions	• Theme 5: More information on cancers • Theme 6: A questions/comments section • Theme 7: Music • Theme 8: Games
3. “How-might-we” brainstorm b –“How might we use games, increase fun and engagement of the developed wireframe?”
• Theme 1: “Mini-games” and ways to improve the “Quiz” feature of the developed wireframe • Theme 2: Avatars and bitmoji rewards • Theme 3: Music • Theme 4: Voucher rewards • Theme 5: Miscellaneous suggestions

^aReported verbatim.

^bCo-researchers were instructed that all ideas were useful contributions and encouraged to “think outside the box,” with a specific listing of all ideas raised by co-researchers shown in Supplementary Table 4.