Without ringing to check. ElderGuardian watches your parent's Apple Watch and tells you — quietly when everything is fine, unmistakably when it isn't.
The problem
Most days nothing is wrong, so you stop calling. Then one day something is, and nobody knows for hours.
ElderGuardian closes that gap without turning your mother's living room into a hospital ward. She wears a watch. You get told.
How it works
Resting heart rate variability differs enormously between healthy people, so a fixed threshold is useless. ElderGuardian learns your relative's own range from their own readings before it judges anything against it — and says so plainly while it's still learning.
A fall or an extreme heart rate needs no baseline, so those alert from the first minute. Only the variability comparison waits.
A plain-English summary of the last day, written on your phone by Apple's on-device model. No charts to interpret. Every figure in it is calculated by the app, not generated.
A watch on its charger looks exactly like a healthy one. If readings stop arriving, you're told that too, instead of being shown yesterday's numbers as though they were today's.
The apps



For the person being looked after
They put the watch on in the morning. That's the whole of their side of it. No app to check, no button to press, no daily questionnaire.
Their screen shows their own heartbeat and nothing that would alarm them. Judgements are for the family, not for the person wearing it.
Questions
Only the people your relative explicitly invites. The data lives in their own iCloud account and is shared read-only. We run no server and never receive it — we have no technical way to read any of it.
No. ElderGuardian does not diagnose, treat or prevent anything, and it is not a substitute for emergency services. It reports measurements and tells you when they change. If someone needs help, call your local emergency number.
Falls and extreme heart rates are watched immediately. The variability comparison needs about forty readings across at least a day to learn their normal range first — until then the app says "learning their normal" rather than claiming everything is fine.
No. It is written on your own iPhone by Apple's on-device model. Nothing leaves the device to produce it, and every number in the summary is calculated arithmetically by the app rather than written by the model.
You get told. Readings stopping is treated as a finding in its own right, not as an absence of one.
Set it up once on their watch, invite yourself from their phone, and get on with your day.