Heart Alert

Heart Alert connects to your Bluetooth heart rate monitor and plays a sound the moment your BPM goes above or below the range you set. Choose a minimum and a maximum, put your phone away, and train by ear.

No screen-watching. No zone math. No account.

HOW IT WORKS
1. Put on your Bluetooth heart rate monitor or chest strap.
2. Set your min and max BPM.
3. Press start — you get an alert when you drift too high or too low, and another one when you are back in range.

FEATURES
– Custom minimum and maximum BPM limits
– High heart rate alerts and low heart rate alerts
– Immediate audio alerts, with adjustable volume
– Optional vibration
– Repeat interval of 1, 3, 5 or 10 seconds while you are out of range
– "Out of range for" delay, so a short spike or a passing dip stays quiet
– Initial delay, to keep things silent during your warm-up
– Sensor battery level at a glance
– Runs in the background and with the screen locked
– Available in 24 languages, spoken alerts included
– Fast setup, nothing to sign up for

WORKS WITH YOUR HEART RATE MONITOR
Supports most compatible Bluetooth Low Energy (BLE) heart rate monitors, chest straps and armbands, including:
– Polar H10, H9, H7, OH1 and Verity Sense
– Garmin, Wahoo TICKR, CooSpo, Scosche, Decathlon and more

Any sensor that broadcasts a standard Bluetooth LE heart rate signal should work, though Bluetooth on its own does not guarantee compatibility. If yours is not detected, send the developer a message.

An external heart rate sensor is required. Camera-based measurement is not supported.

MADE FOR
– Zone 2 work and aerobic base building
– Running, cycling and indoor cycling
– Cardio, gym sessions and interval training
– Endurance and steady-state efforts
– Easy recovery days, where the whole point is keeping the effort down
– Anyone who wants a heart rate alarm and nothing else

WHY AN ALARM INSTEAD OF A DISPLAY?
A number on a screen only helps if you look at it. An alert means your target range takes care of itself, and you only think about it when something actually needs attention — on the treadmill, on the road, or with your phone in a jersey pocket.

PRICING
Your first 5 tracking sessions are free. Unlimited tracking is a one-time purchase. No subscription, no ads.

PRIVACY
Heart Alert collects no data. Your heart rate never leaves your phone.

BACKGROUND USE
Heart Alert keeps tracking in the background and with the screen locked. Don't close it from the app switcher while you train: iOS stops the app, and the alerts with it.

Heart Alert is a fitness and training tool. It is not a medical device, it is not intended to diagnose, treat, cure or prevent any disease, and it should not be relied on for emergency or continuous health monitoring. Check with a doctor if you have questions about your heart rate or your training.