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Our older users have been much more tech-savvy than we anticipated when we first started working on this. Roughly 10k people turn 65 each day, and many of them are in the generation that is used to relying on an iPad every day. That said, we've tried to incorporate tiny UX considerations wherever we can, such as adapting with the phone's text size settings and increasing the size of touch targets.

We've also found that folks are generally overconfident but misinformed about nutrition (probably due to the overwhelming amount of information online and in the media) but anxious and risk-averse when it comes to trying new forms of exercise.