Halo Lytt tracks sleep, recovery, stress, activity, heart rate, breathing and skin temperature. All of it goes to the parent app rather than to a display on the child's wrist. It does not track location: there is no GPS, no SIM and no cellular connection.
What each metric is actually good for
- Sleep. When sleep really starts, total time asleep, and night waking you never hear. The gap between bedtime and sleep onset is frequently the entire problem in a household, and it is invisible without measurement.
- Recovery. Whether the body is bouncing back between days, which is more informative than any single night.
- Stress. Inferred from heart rate patterns. Useful as a trend across a term, not as a verdict on a Tuesday.
- Activity. Movement across the day, deliberately not the headline number.
- Heart rate, breathing and skin temperature. Baseline signals, most useful when they shift away from a child's own normal.
Why sleep leads and steps do not
Steps are the easiest thing to measure and the least likely to change anything. Almost no household alters its routine because a step count was low. Sleep is the opposite: sleep onset, night waking and consistency are the things parents can actually act on, and the ones that show up in mood, focus and school the next day.
So the app is organised around sleep and recovery rather than a step goal, and the child is not shown a number to chase.
What it cannot tell you
It cannot diagnose anything. Sleep apnoea, restless legs and genuine sleep disorders are diagnosed clinically, often with polysomnography, and a wrist wearable is not a substitute. If your child snores heavily, gasps, or appears to stop breathing, see a doctor rather than collecting more data.
It also cannot tell you why. It can show that Thursday was bad. Whether that was a late dinner, a hard day at school or an oncoming illness is context only you have.
Halo Lytt's metrics are for wellbeing awareness. They are not clinically validated, and it is not a medical device.
More on using the numbers well in what a kids sleep tracker actually tells you.
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