What Humotron reads from your Apple Watch

Apple Watch records heart rate, resting heart rate, heart-rate variability, sleep stages and duration, respiratory rate, blood oxygen, workouts and daily movement, all stored in Apple Health on your iPhone.

Humotron reads the last six months of daily summaries once, when you connect. It does not read your raw stream, it does not read continuously, and it does not need your name or email to do it.

• How long you slept, and how wellTotal time asleep and the device’s own measure of sleep quality, night by night. Humotron looks at the pattern across weeks, not any single night.
• Resting heart rateYour heart rate at rest, compared with your own baseline rather than an average. A rise over several weeks, with no change in training, is one of the patterns Humotron watches for.
• Overnight heart-rate variabilityThe variation between heartbeats while you sleep. Devices measure it differently, so Humotron only ever compares your readings with your own earlier ones.
• ActivityHow much you move: steps, workouts or training load, depending on the device. This is what footwear and some habit matches are built on.

• Apple Health is on your phone, not in the cloud, so the Humotron app on your iPhone is the only way to read it. The web connect flow cannot.
• You choose in Apple Health exactly which categories the app may read, and can change your mind at any time in Settings.
• Apple Health also holds data from other apps and devices you use. If you allow it, those count too.

Apple Watch’s heart rate is among the most accurate on a wrist, its sleep time is good, and its sleep stages are approximate like everyone’s. Its HRV is the odd one out: Apple records SDNN, a different statistic from the RMSSD that Oura, WHOOP and Fitbit use, and samples it at scattered times rather than as a nightly average.

• Do not compare an Apple Watch HRV number with another device’s. They are not measuring the same thing.
• Humotron reads the overnight samples and compares them with your own earlier ones, which is the only comparison that holds.
• The Vitals app’s overnight heart rate, respiratory rate and wrist temperature are good trend readings.
• The watch must be worn in bed with Sleep Focus on for sleep to be recorded.

Every match says which of your measurements should move if it works, and how long to wait, so you can check it on your own tracker. How matching works.

Where the data cannot answer, Humotron says so rather than guessing. Apple Watch data does not cover:

• What you ate, unless another app writes it to Apple Health
• Blood markers
• Anything about your skin

1. 1
   Open humotron.com and choose Find my matches.
2. 2
   Install the Humotron app from the App Store, open it, and allow it to read Apple Health.
3. 3
   Humotron reads your last six months of daily summaries. This takes about a minute.
4. 4
   Your matches arrive, each with the reason behind it and which measurement should move if it works.

• Access is read-only. Humotron cannot write to your device or change anything in its app.
• You can withdraw access at any time, from the device maker’s app or from Humotron, and ask for your data to be deleted.
• No brand you are matched to receives your health data. They see an order if you place one, and nothing about why.
• Humotron is a wellness service, not a medical one. It does not diagnose or treat anything.

How Humotron handles your data, in full.