Over the last few years, wearable health tracking has managed to get pretty damn good at the basics, from flagging sketchy sleep to keeping an eye on your resting heart rate, and even nudging you to move if you've been on the sofa too long. Some devices can even warn you about things like irregular rhythms or high blood pressure trends.
But when it comes to brain health - the stuff people are quietly worried about as they get older - consumer tech hasn’t exactly had many genuinely helpful tools, beyond the usual “sleep more” and “stress less” advice.
