# Cardiac Alarm — Critical Heart Rate Drop Alert

> Apple Watch app alerts to critical low heart rate or signal loss. (iPhone/iPad app by Damir Skoko.)

- Source: https://appshunter.io/ios/app/cardiac-alarm/id6749182547 (this page in markdown: same URL + `.md`)
- Developer: [Damir Skoko](https://appshunter.io/developer/1829135156)
- Category: Medical, Health & Fitness
- Price: $0.99 with in-app purchases
- Age rating: 4+
- Requires: iOS 13.0 · 3 MB
- Languages: American English
- Released: 2026-02-26
- Data updated: 2026-08-28
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/cardiac-alarm/id6749182547/reviews.md

## What is Cardiac Alarm?

An extra layer of awareness for your heart during rest and sleep.

Cardiac Alarm is a standalone Apple Watch app engineered to provide an additional layer of monitoring for individuals tracking specific heart rate trends. It is designed to notify family members when a critical pulse reading is detected, offering added support for you and your loved ones during your quietest hours.

How it works. When a monitoring session is active, the app tracks heart rate data via the Apple Watch sensors. If the system detects a heart rate below the fixed 33 BPM threshold or a loss of signal, it triggers a high-volume siren. This alert is specifically designed to be loud enough to notify those in your immediate surroundings so that support can be initiated if necessary.

Who is it for. Cardiac Alarm is a tool for individuals interested in maintaining a high level of awareness regarding their heart rate trends. While it is a wellness tool, it provides a valuable supportive layer for those who wish to stay informed about their cardiac data during rest or sleep.

IMPORTANT: Best-Effort Tool & Limitations. Cardiac Alarm is a best-effort tool. Due to inherent technical limitations, software errors, or hardware malfunctions, the app does not guarantee the detection of every pulse drop or cardiac event. Monitoring frequency is strictly dependent on Apple Watch sensor availability and hardware performance. The app requires an active monitoring session and firm skin contact (proper device fit) to function. It cannot alert to events that occur between sensor readings or if the system is interrupted by OS constraints or battery depletion.

Please Note: Cardiac Alarm is a monitoring and alerting aid only; it does not provide medical treatment, diagnosis, or first aid instructions. It is not a life-saving device and should not be relied upon as the sole monitoring system in life-threatening situations.

MEDICAL DISCLAIMER: This app is intended for informational and monitoring purposes only. Cardiac Alarm is NOT a medical device and is not a substitute for professional medical advice, diagnosis, or treatment. The 33 BPM threshold is a fixed safety parameter and cannot be modified. Always consult your cardiologist regarding your health and treatment plan. In case of a medical emergency, contact your local emergency services immediately.

## Key features

- Critical heart rate drop alerts
- Loss of signal detection
- High-volume siren notification
- Family member alerts
- Rest and sleep monitoring
- Standalone Apple Watch app

## Pricing and in-app purchases

Base price: $0.99.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Cardiac Alarm Premium | $0.99 | per month |


## Chart rankings

- #196 in Top Paid · Medical (US App Store)

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/cardiac-alarm/id6749182547/reviews.md

### 5/5 — 5étoiles

*2026-08-01*

Une vraie alarme sonore et vibration…

### 1/5 — Subscription only?

*2026-05-02*

I purchased this app thinking it would be a one time payment, only to find out the app ONLY functions with a monthly subscription?

## Frequently asked questions about Cardiac Alarm

### What is the main function of Cardiac Alarm?

Cardiac Alarm is designed to provide an extra layer of awareness for your heart rate during rest and sleep. It alerts family members to critical low pulse readings or signal loss by triggering a loud siren.

### Does Cardiac Alarm require an Apple Watch?

Yes, Cardiac Alarm is a standalone Apple Watch app that utilizes the watch's sensors for heart rate monitoring. It also supports iPhone and iPod for related functionalities.

### What is the fixed heart rate threshold for alerts?

The app triggers an alert if it detects a heart rate below a fixed threshold of 33 BPM or a loss of signal. This threshold cannot be modified by the user.

### Is Cardiac Alarm a medical device?

No, Cardiac Alarm is intended for informational and monitoring purposes only. It is not a medical device and should not be relied upon as a substitute for professional medical advice, diagnosis, or treatment.

### What are the limitations of Cardiac Alarm?

Cardiac Alarm is a best-effort tool. It cannot guarantee detection of every pulse drop due to technical limitations, software errors, or hardware malfunctions. Monitoring frequency depends on Apple Watch sensor availability and requires active sessions with firm skin contact.

### How often is Cardiac Alarm updated?

The app was last updated on April 22, 2026, to version 1.2. Update frequency is typically determined by the developer based on user feedback and necessary improvements.

### What is the pricing for Cardiac Alarm?

Cardiac Alarm is available for a one-time purchase of $0.99. There is also a 'Cardiac Alarm Premium' subscription option at $0.99 per month, which includes a 1-month free trial.

### Does Cardiac Alarm have ads?

No, Cardiac Alarm does not contain advertisements. The app is free to download and offers in-app purchases for premium features or subscriptions.

## Version history (last 3 releases)

### 1.2 — 2026-04-22

Safety Notice notification added
Permissions-required notice added
Info button added
Design improvements

### 1.1 — 2026-03-06

Fixed a critical issue where the emergency alarm was triggering at 50 BPM instead of 33 BPM. Also fixed an issue that sometimes prevented the app from starting correctly.

### 1.0 — 2026-02-27

No release notes.

## More apps by Damir Skoko

- [SPEECHROUTE](https://appshunter.io/ios/app/speechroute/id6754806405)

All apps by Damir Skoko: https://appshunter.io/developer/1829135156

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-28.*