Try Beat Watcher on your Apple Watch
Free to download. Requires Apple Watch Series 3 or newer (watchOS 8+).
Whether you live alone and want your sister in the loop when your heart rate spikes, or you want a heads-up about a parent’s heart rate, the options in 2026 all make different trade-offs on speed, consent, delivery, and cost. This is an honest comparison, including where Beat Watcher fits today and what it is building next.
Options range from prompt SMS or push delivery down to background data syncing that can lag by hours. If the point is knowing something is happening now, delayed sharing will disappoint.
Some options use fixed preset values checked every 10 minutes or so; others let the wearer set the exact BPM that matters to them and alert on the crossing in real time.
Sharing heart data is intimate. The best designs make both people opt in and let either side stop at any time. SMS-based approaches typically skip recipient consent entirely.
Models range from free, to monthly subscriptions, to per-alert credits. Credit systems have a quiet failure mode: when the credits run out, the alerts stop.
Share heart health notifications and data from the Health app with someone you invite. Strong consent on both sides and no cost, but the shared copy arrives through iCloud background syncing, well after the fact, and the underlying watch notifications use fixed presets checked roughly every 10 minutes.[1][2] Best when staying informed matters more than immediacy. See our full explainer on Apple Watch’s limits here.
An Apple Watch app that checks your heart rate against limits you set and texts your heart rate, time, and a location link to up to five contacts you list. Recipients need no app or iPhone, which is its real strength. Trade-offs: alerts are positioned around emergencies, there is no recipient consent step, delivery depends on your paired iPhone being reachable, and each alert consumes a paid credit (packs are sold in the range of $3.99 for 20), so alerts silently stop when credits run out.
A premium Cardiogram subscription lets a family member view your heart rate data remotely using a shared code. It is a data-review surface rather than an alerting one: useful for checking in on trends, not for being notified when a threshold is crossed.
Full caregiving services that turn the watch into a monitored device: heart rate alerts, GPS geofences, falls, and more delivered to a caregiver app, typically around $25 per month. Built for looking after a parent or dependent with real care needs. If you need emergency response, that is a different category again: dedicated medical alert services, or Apple’s own Emergency SOS and Fall Detection.[3]
Today, Beat Watcher is the wearer’s tool: set your own high and low BPM thresholds with the Digital Crown, get instant haptic and audio alerts with continuous Background Mode, and optionally forward every crossing to your own iPhone with Phone Alerts and Critical Alerts that sound through Silent Mode. It does not notify another person yet. Planned: Alert Sharing, in development and not yet available, would let a trusted contact accept your invite in their own Beat Watcher app and receive your threshold alerts as iPhone notifications, with consent on both sides and no per-alert fees. This page will be updated when it ships.
For Beat Watcher’s wearer-side comparison against TachyMon, HeartWatch, Cardiac Alarm, and RscMe, see best heart rate alert apps for Apple Watch.
If you need the other person notified with no app on their side, RscMe’s SMS approach is the pragmatic pick, with its credit costs and consent model as the trade-offs. If free, consented, and eventual is enough, Apple Health Sharing is built in. If they just want to look at your data, Cardiogram’s Family Mode covers it. If you are caring for a parent full-time, a caregiver platform or a dedicated medical alert service is the right category, and nothing on this page replaces emergency response.
What nobody offers today is the combination most people asking this question actually describe: the wearer’s own custom thresholds, prompt delivery to a trusted person’s iPhone, real consent on both sides, and no per-alert fees. That gap is what Beat Watcher’s planned Alert Sharing feature is being built to close.
Free to download. Requires Apple Watch Series 3 or newer (watchOS 8+).
It depends on what you need most. If free and consented matters more than speed, Apple Health Sharing passes a delayed copy of your heart health notifications to someone you invite. If the other person has no iPhone or you want SMS, RscMe texts your heart rate and location to contacts you list, with paid per-alert credits. If they mainly want to review your data, Cardiogram Family Mode offers remote viewing on a subscription. No current option combines custom thresholds, prompt notification-based delivery, recipient consent, and no per-alert fees; that combination is what Beat Watcher is building with its planned Alert Sharing feature.
Yes, with setup on their watch and consent on their side. The free route is Apple Health Sharing from your parent's iPhone, which shares their heart health notifications with you, though delivery is delayed. Dedicated caregiver platforms like BoundaryCare send heart rate, fall, and location alerts to a caregiver app for a monthly subscription. If your parent has significant care needs or you need emergency response, a dedicated medical alert service is the right category; heart rate awareness apps are not emergency response systems.
It varies. RscMe delivers by SMS, so the recipient needs nothing installed. Apple Health Sharing requires the recipient to have an iPhone with the Health app and to accept the invitation. Cardiogram Family Mode requires the viewer to use Cardiogram. Beat Watcher's planned Alert Sharing would work through the Beat Watcher iPhone app on both sides, which is what enables a proper invite-and-accept consent step and notification delivery.
Two delays stack. First, Apple Watch's own high and low heart rate notifications are checked periodically and fire only after your heart rate stays past the fixed setting for about 10 minutes while you appear inactive. Second, Health Sharing passes the notification copy through iCloud background syncing, which is not designed for immediate delivery, so the shared copy can arrive well after the original. The result is useful for staying informed, but it is not a real-time alert for the other person.
That is the plan. Alert Sharing is a planned Beat Watcher feature currently in development: you invite a trusted contact, they accept in their own Beat Watcher app, and they receive an iPhone notification when your heart rate crosses a high or low threshold you set, with no per-alert fees. It is not available yet. Beat Watcher today alerts you on your own Apple Watch and iPhone. Beat Watcher is a general wellness app, not a medical device, and Alert Sharing is designed for awareness between trusted people, not emergency response.
Related: Can Apple Watch Alert Someone Else? · Best Heart Rate Alert Apps · POTS Heart Rate Monitor · Sleep Heart Rate Monitor · Low Heart Rate Alerts