How to set up Apple Watch for heart failure: what Sam adds - and what daily weight monitoring covers
Set up Sam for heart failure on Apple Watch, understand which metrics matter, and prepare wearable data for your next cardiology appointment.
On this page
If you live with heart failure and wear an Apple Watch, Sam supplements your daily weight monitoring without replacing it. This guide shows how the two work together.
Weight monitoring and wearable data are separate tools
Your daily weight check is your primary early warning system for worsening heart failure - regardless of what else you use. The article Resting heart rate and activity in heart failure explains why no wearable can substitute for it.
Sam is a second, independent tool. It reads resting heart rate, sleep, and activity from Apple Health - signals about your daily capacity. Sam does not currently incorporate weight or body composition data into its analysis, and it doesn't read ECG or blood oxygen values at all. Those measurements are for you to discuss directly with your care team.
Setup: three quick steps
- Wear your watch regularly. Resting heart rate is calculated automatically in the background.
- Enable sleep tracking so Sam can include sleep data in its analysis.
- Connect Sam to Apple Health and grant permissions for resting heart rate, sleep, and activity.
If you use a smart scale that syncs to Apple Health, your weight will remain visible in the Health app - but Sam doesn't currently use these readings in its trends or analysis.
The report for your cardiology appointment
Once a month, Sam summarises your resting heart rate, sleep, and activity trends in a PDF report. Together with your weight records, this creates a fuller picture: the warning signals from your scale, the daily-life context from Sam.
Where Sam Health fits in
Sam reads resting heart rate, sleep, and activity from Apple Health, compares them against your personal baseline, and compiles them into a monthly report. The article Living with heart failure: exercise and warning signs covers why movement counts as therapy in heart failure and what warning signs to watch for.
Sam is a wellness companion, not a medical device. Sam does not detect worsening heart failure, does not diagnose, treat, or prevent any illness, and does not replace medical care, your daily weight monitoring, or emergency services. Your data stays with you - Sam is GDPR-compliant and built in Europe.
Try Sam HealthSources
- Apple Support: Heart rate on Apple Watch
- Nationale VersorgungsLeitlinie (NVL) Chronische Herzinsuffizienz, AWMF-Register
Frequently Asked Questions
Can a smartwatch replace daily weight monitoring for heart failure?+
No. A smartwatch doesn't measure weight on its own, and Sam doesn't currently analyse weight or body composition data - even if you sync it to Apple Health via a smart scale. Both approaches work independently of each other. Daily weight monitoring remains your central early warning system for worsening heart failure, as outlined in clinical guidelines.
Does Sam work with devices other than Apple Watch - like Garmin or Fitbit?+
Yes, in principle. Sam reads from Apple Health and works with any wearable that syncs to Apple Health - including Oura, WHOOP, and Garmin. Whether a specific Fitbit or Android device syncs to Apple Health depends on the individual device; check the manufacturer's sync settings. An iPhone is required either way.
Can I still log my weight in Apple Health?+
Yes. Many smart scales sync automatically to Apple Health, so your weight data sits alongside your other health metrics. However, Sam doesn't currently incorporate these readings into its trend analysis or monthly reports.
How do I prepare for my cardiology appointment using wearable data?+
Sam generates a monthly PDF report summarising your resting heart rate, sleep, and activity trends from wearable data. Bring this report alongside your weight records - together they give your care team a more complete picture.