Instant high and low heart rate alerts on Apple Watch

Set your BPM thresholds and Beat Watcher alerts you immediately with haptic vibration and audio when your heart rate crosses them, even in the background.

Download on the App Store
Beat Watcher running on Apple Watch showing 142 BPM with threshold set to 130, Background Mode On
🔒 No account required On-device data only ❤️ Uses Apple Health

How it works

1

Set your threshold

Use the Digital Crown to choose your high and low BPM limits.

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2

Go about your day

Background Mode keeps monitoring even when your wrist is down.

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3

Get alerted instantly

Haptic vibration and audio the moment your heart rate crosses the line.

"The audio and haptic feedback from background mode saved my life twice in last 18 months."
Christian S., Beat Watcher user
Beat Watcher is not a medical device and is not intended to diagnose, treat, or prevent any condition.

Features

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Threshold Alerts

Set your BPM limit with the Digital Crown. Get haptic vibration and audio alerts the moment your heart rate crosses it.

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Background Mode

Keep monitoring even when your wrist is down or you leave the app. Alerts work in the background, continuously.

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Low Heart Rate Alerts

Monitor for drops below your threshold. Track both high and low limits simultaneously for complete coverage.

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Phone Alerts

Get notified on your iPhone when thresholds are crossed. Critical Alerts mode cuts through Do Not Disturb.

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External HR Monitors

Pair a Bluetooth chest strap like the Polar H10 for improved accuracy and extended battery life.

Simple by Design

One app that does one thing well. No clutter, no complexity. Set a threshold and go.

Built for real needs

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Medical Monitoring

Trusted by people living with POTS, ME/CFS, and other heart rate conditions for continuous symptom tracking.

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Fitness

Stay in your target heart rate zone during workouts with instant feedback when you drift out of range.

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Stress Management

Recognize stress in real-time through your heart rate and take action before it escalates.

Try Beat Watcher on your Apple Watch

Download on the App Store

Frequently Asked Questions

What Apple Watch models does Beat Watcher support?

Beat Watcher requires watchOS 8 or newer, which means Apple Watch Series 3 or later.

Does it work in the background?

Yes. Turn on Background Mode and Beat Watcher continues monitoring your heart rate even when your wrist is lowered or you switch to another app. You'll still receive haptic and audio alerts.

Can I use it with a chest strap heart rate monitor?

Yes. Beat Watcher works with Bluetooth heart rate monitors like the Polar H10 paired to your Apple Watch. This can improve accuracy and extend battery life during long monitoring sessions.

Does Background Mode work during workouts in other apps?

No. Background Mode cannot run simultaneously with a workout started in another app (like the built-in Workouts app). If you need background monitoring during exercise, start your session from within Beat Watcher.