Older adults
Sleep and daily rhythm shift gradually with age, and families notice long before they can describe it. By the time there is a doctor's appointment, the only record is memory — and memory is exactly what everyone is worried about.
What it does
Six months of nightly measurements is a different kind of thing from an impression. It shows when the change started, how fast it moved, and whether it is still moving.
That record is exportable as a document to take to an appointment. It is the entire point of the feature: not to tell you what is happening, but to make sure the person who can tell you has something to work with.
When sleep starts and ends, how fragmented it is, how much of the night is spent awake, and whether the whole pattern is drifting earlier or later over months.
Movement, position and waking through the night — often the first thing a partner or a carer notices, and the hardest to quantify honestly after the fact.
Opt-in, deliberately slow to react, and tuned to stay quiet. It requires a sustained trend over weeks before it says anything at all.
Rules we set ourselves
A device that frightens healthy people, and a device that stays silent about something real, are both failures. So the behaviour here is deliberately constrained.
Also useful, day to day
Sleep gets lighter and more broken with age for entirely ordinary reasons, and the things that help are ordinary too — morning light, a cooler room, a consistent hour, less alcohol in the evening.
Those are all testable. The value of measuring is that you can try one and actually see whether it worked, instead of wondering.
If you work in geriatric care, sleep medicine or assisted living and want to shape how this is built, we would rather hear from you now than after it ships.