HeartCast: Heart Rate Monitor

Name: HeartCast: Heart Rate Monitor
Rating: 3.4 (5 reviews)
Author: Shawn Carrillo

Broadcast Your Heart Rate!

Free · In‑App Purchases · Designed for iPad

5 Ratings
Ages

9+
Years
Category

Health & Fitness
Developer

Shawn Carrillo
Language

EN
+ 11 More
Size

9.7
MB

Heart Rate Monitor for Apple Watch, AirPods Pro 3, iPhone, and iPad! Broadcast your heart rate to your fitness equipment and bike trainers! HeartCast enables you to broadcast your heart rate from your Apple Watch or Airpods Pro 3 to your Bluetooth-enabled fitness equipment and bike trainers. Including Peloton Bike and Tread. HeartCast is 100% Free to use! Replace your existing heart rate monitors with the Apple Watch you already wear and love. Monitor your Heart Rate Zones from your Apple Watch/Airpods Pro 3 and iPhone. HeartCast is powered by Bluetooth and you! We use Bluetooth open standards to communicate directly with your fitness equipment. Your heart rate data never leaves your devices. Free! * Free to download and use forever. * Ad Free, forever. In App Purchases * HeartCast is completely free to download and use forever. * If you'd like to support Heartcast feature development, please consider purchasing our Pro Upgrade. New features and improvements in the works. * Audible Features to announce your heart rate and heart rate zones. Try Free in User Preferences. About Your Privacy * HeartCast monitors your heart rate and broadcasts it over Bluetooth to nearby compatible fitness equipment. * HeartCast does not monitor or collect any other personal information! * HeartCast can optionally save or discard your workouts. Apple Watch automatically saves some basic metrics during a workout and contributes directly to closing your Activity Rings. * HeartCast does not save, store, or transmit your heart rate data to any external services. It is only used within the app and your nearby Bluetooth-enabled devices. * HeartCast utilizes Google Analytics and Google Crashlytics to improve our features and identify and resolve critical issues with the application. * HeartCast is not affiliated with Peloton or any other fitness equipment provider. Instructions 1) Start HeartCast App on your watch and iPhone Heart Rate will sync between the two devices. 2) On your Watch, press the Start button to begin a workout. This enables bluetooth and begins to broadcast your heart rate to nearby devices. It also enables HeartCast to run in the background during your workout. 3) Breathe easily and never wear those uncomfortable chest straps again. Requirements * An Apple Watch & iPhone. Airpods Pro 3 & iPhone or iPad. * Access to Apple Health to create workouts and read your heart rate data * Access to Bluetooth to cast to your fitness equipment Supported Fitness Equipment - Peloton Bike, Bike+, and Tread - Peloton App on iPad and Amazon Firestick - Zwift (on iPad, Apple TV, or computer) - ROUVY (confirmed by ROUVY support and users) - TrainerRoad (iPad) - Wahoo Fitness App (iPad) - TacX Smart Trainer Software (Mac/iPad) - Hammerhead Karoo 2 and Karoo 3 - FulGaz App - Bryton Rider 450 - Lezyne Macro GPS - NordicTrack iFit equipment (C2950 Treadmill, RW850 Rower) - Echelon Fit App (iPad only) - iGPSPORT bike computers (user reported, results may vary) UNSUPPORTED - Devices that do NOT support Bluetooth Low Energy (BLE) - **Garmin Edge devices (830, 1030, others)**: Users report connection issues, or never connects. - **Echelon Bikes with integrated tablet**: Unsupported - **Wahoo Elemnt Roam/Bolt**: Mixed results. Please send us a note if HeartCast works on your favorite fitness equipment! Please visit our website for an FAQ and Support: https://help.heartcast.app/ HeartCast was built with love by an avid Peloton user.

Ratings & Reviews

3.4

out of 5

5 Ratings

Difficulty connecting
04/23/2021

Rintheva
I have to turn my watch off or reinstall the app every time I use it. It is great when it works but this issue is causing me a lot of frustration.Update: the app is very unstable and has become unusable. I have to reboot my watch and phone every time I use it. I don’t know if this is an iPhone/watch issue or an issue with the app. And it won’t reliably connect to my peloton anymore. Sometimes it drops in and out; sometimes it takes a while to connect and sometimes it won’t connect at all. Again, it is great when it works because it saves me having to wear a heart chest monitor or otherwise seeking a work around for peloton. But, it has not been reliable and when it takes me 5 minutes or so to start the app and get it working it throws off my workout routine. Please get this app stable! It is so good when it works.
Difficulty connecting
04/23/2021

Rintheva

I have to turn my watch off or reinstall the app every time I use it. It is great when it works but this issue is causing me a lot of frustration.Update: the app is very unstable and has become unusable. I have to reboot my watch and phone every time I use it. I don’t know if this is an iPhone/watch issue or an issue with the app. And it won’t reliably connect to my peloton anymore. Sometimes it drops in and out; sometimes it takes a while to connect and sometimes it won’t connect at all. Again, it is great when it works because it saves me having to wear a heart chest monitor or otherwise seeking a work around for peloton. But, it has not been reliable and when it takes me 5 minutes or so to start the app and get it working it throws off my workout routine. Please get this app stable! It is so good when it works.
Sometimes works
12/28/2025

faithfracture
This works sometimes. Often have to kill the app multiple times in both my watch and phone before they will sync up and I can actually start broadcasting. Even then, sometimes it will just stop working halfway though my ride. Most of the time once it’s connected it doesn’t send updates at regular intervals there will be periods where my cycling app doesn’t receive a value for several seconds up to several minutes. Recently, they added the ability to record works to apple health. This is REQUIRED now for the app to work. I do not want this app writing workouts to Apple health. My cycling app does that. All this is doing is forcing me to go delete a workout that doesn’t even have accurate data to begin with.

Developer Response
Under Preferences please choose: “Never Save” for the Workout option: “Save to Apple Health”.Please feel free to email us some details about your cycling app so we can investigate the other issues.
Sometimes works
12/28/2025

faithfracture

This works sometimes. Often have to kill the app multiple times in both my watch and phone before they will sync up and I can actually start broadcasting. Even then, sometimes it will just stop working halfway though my ride. Most of the time once it’s connected it doesn’t send updates at regular intervals there will be periods where my cycling app doesn’t receive a value for several seconds up to several minutes. Recently, they added the ability to record works to apple health. This is REQUIRED now for the app to work. I do not want this app writing workouts to Apple health. My cycling app does that. All this is doing is forcing me to go delete a workout that doesn’t even have accurate data to begin with.
Developer Response 12/29/2025
Under Preferences please choose: “Never Save” for the Workout option: “Save to Apple Health”.Please feel free to email us some details about your cycling app so we can investigate the other issues.
Great Heart Rate Monitoring App
12/21/2025

Tttttttttisttttttt
I’ve used this for years, but the 2025 updates (AirPods Pro 3 support and haptic zone alerts) have made it even better. It’s reliable, private and keeps my Apple Watch or air pods at the center of my fitness data. Setup is quick and it has never dropped a connection during a long ride. The customer service is responsive and reliable. I just donated $100 to show my appreciation. There’s not many like this out there. 10/10.

Developer Response
Thank you so very much for your kind review and incredibly generous donation! 💙
Great Heart Rate Monitoring App
12/21/2025

Tttttttttisttttttt

I’ve used this for years, but the 2025 updates (AirPods Pro 3 support and haptic zone alerts) have made it even better. It’s reliable, private and keeps my Apple Watch or air pods at the center of my fitness data. Setup is quick and it has never dropped a connection during a long ride. The customer service is responsive and reliable. I just donated $100 to show my appreciation. There’s not many like this out there. 10/10.
Developer Response 12/27/2025
Thank you so very much for your kind review and incredibly generous donation! 💙
Doesn’t work for me
12/20/2025

DCherne
This app does not work to connect my Apple Ultra 3 watch to my Garmin Edge 1050 bicycle computer using an iPhone 15 Pro. It appears to make the connection using BLE but the Garmin 1050 does not receive any heart rate data.

Developer Response
Hi DCherne, we specifically state that we do not support Garmin devices. Please be kind and reconsider this review. We work hard to support as many devices as we can.
Doesn’t work for me
12/20/2025

DCherne

This app does not work to connect my Apple Ultra 3 watch to my Garmin Edge 1050 bicycle computer using an iPhone 15 Pro. It appears to make the connection using BLE but the Garmin 1050 does not receive any heart rate data.
Developer Response 12/22/2025
Hi DCherne, we specifically state that we do not support Garmin devices. Please be kind and reconsider this review. We work hard to support as many devices as we can.

NEW FEATURES: - Hiking Workout Type - Cycling Distance IMPROVEMENTS: - Stop Button Always Visible (Watch)

Version 3.2.2

12/21/2025

Data Not Linked to You

The following data may be collected but it is not linked to your identity:
- Usage Data
- Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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