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A good health data app connects passive signals to daily decisions.

daygauge reads your Apple Health data, adds the places you go and the habits you log, and compares it all with your own average.

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The question

Start with what your own data can show.

Most health data apps collect charts. You still have to work out what mattered.

daygauge puts health readings next to context: when you slept, how much you moved, where your routine changed, what you logged and what shifted afterwards.

Quick answer

daygauge starts with Apple Health readings: sleep, steps, exercise minutes, resting heart rate and HRV. Places and habits you log add context.

Questions answered

What this guide covers.

  • What should a health data app track?
  • How can Apple Health data become daily insights?
  • Can wearable data explain habits?
  • What is the difference between health analytics and medical advice?
  • How should missing data affect confidence?
In daygauge

How the app handles this.

Signal
Cycle tracking is opt-in. Places, habits and cycle days give context in Insight and do not change your Life Index.
Confidence
Missing readings lower confidence instead of creating false certainty.When a reading is not available, daygauge says so rather than filling the gap.
Weekly Review
Weekly Review shows what changed, what moved with it and whether the pattern repeated.Your first Weekly Review is free. Later reviews are part of Pro.
Illustrative example

What this can look like in the app.

Source mix: Apple Health supplied sleep, movement and recovery; your visits supplied place context.

Example
Confidence

Confidence rises when the same pattern repeats against your own baseline and drops when key signals are missing.

Next move

Try one small change, log it, then see whether the pattern repeats over the next week.

Example 1

Missing reading: HRV is absent today, so the Life Index leaves that part out and shows lower confidence.

Example 2

Weekly Review: more movement and a steadier sleep window stood out as what changed this week.

Research

Further reading.

These studies describe groups of people. They help explain the topic, but they cannot tell you what will happen to you.

Research context only. daygauge does not diagnose, treat, prevent or predict disease risk. Personal medical concerns belong with a qualified clinician.

Limits

What daygauge does not do.

  • It does not diagnose, treat or prevent disease, or predict your risk of it.
  • It does not claim one habit caused a result. It shows the pattern, how confident it is and what else changed.
Read next

Related guides.

Apple Health insights need baselines, context and confidenceA life score app needs a number people can inspectprivacy
On the App Store

Want daygauge to explain your sleep, movement and routine data?

daygauge is free to download. Pro is £8.99 a month or £49.99 a year.

Download on the App Store

Personal analytics, not medical advice