HeartSync Workout App 4+

Stream Heart Rate to Gear

Function 101

    • 3.8 • 19 Ratings
    • Free
    • Offers In-App Purchases


Put your heart rate in focus with HeartSync for Apple Watch. Stream your Apple Watch heart rate to your Peloton Bike, Treadmill, or any ANT+ compatible workout equipment, or compatible studio live displays. The HeartSync Pod is required to connect to your equipment display (sold separately).

Get Heart Strong and use HeartSync to measure your heart rate and heart zones during your workout. The HeartSync App is the ideal solution to display your Apple Watch Heart Rate to your favorite workout equipment. The HeartSync App also works without any additional equipment to track your heart rate during your work on your Apple Watch.


Keep your heart rate in focus with the HeartSYNC Apple Watch App and Pod. HeartSync connects to your Apple Watch using Bluetooth and reads your heart rate from the Apple Watch, and continuously broadcasts to your Peloton Screen over ANT+.

Launch a workout from the HeartSync App on your Apple Watch and there is no need for additional heart rate sensors. Just use your Apple Watch for tracking your heart rate!


Any workout equipment or smart exercise computer that supports connecting an ANT+ heart rate monitor can be used with the Function101 HeartSync Pod.


In the HeartSync Apple Watch App, select your workout type, get full control over your Health data preferences, and fill your Apple activity rings!


At Home- Link your HeartSync pod to Peloton bikes and treadmills, rowers and more from the home fitness brands you love. Check to verify your equipment can connect to an Ant+ heart rate monitor.

In the Gym- Sync with live heart rate training displays commonly found in gyms and studios. Check with your studio for compatibility.

On the Road- Connect your Apple Watch with HeartSync to display your heart rate to your favorite Bike Computers such as Wahoo and Garmin.


Compact Design- Place it on your equipment & forget it. Includes 3M Tape adhesive and velcro attachments

Seamless Integration- Devices look at the HeartSync Pod to be visible to look similar to any ANT+ heart rate monitor.

Long-lasting battery- Our replaceable coin cell battery lasts one year or more without intervention.

Easy Connection- Just tap once to pair to your device!


- We read your biometrics from Apple Health for personalization
- We save your workout data to Apple Health


This app requires a connected Apple Watch to function properly.

To order the HeartSync Pod, visit our website https://function101.com/products/heartsync

What’s New

Version 1.29.1

Added ability to see time as a primary display option during workouts.
Improved workout history syncing between watch & phone.
Improved settings pages.
Fix for the duplicate summary email problem.

Ratings and Reviews

3.8 out of 5
19 Ratings

19 Ratings

Mhemmeter ,

So Much Better Than Chest Strap

I have a beta version of the device that transmits my Apple Watch pulse into my peloton. It’s fantastic! Once I got through the set up, it’s incredibly easy to use. It’s so much better than the chest strap which was so inconsistent. The morning I received it, it wasn’t working so I filled out a help request. One of the owners actually called me from his car and walked me through the fix. It took less than five minutes and everything has been perfect since then. Talk about service!

Jmj45 ,

This is a really useful app and product - great support

Much preferred from a chest strap, and it has good translation from the IWatch. I has a small issue and customer service called and promptly fixed it. Love it on the Peleton, not having to check my watch.

polixter ,


UPDATE: see below where they actually responded to this review? They have never responded to an email! They are a month behind in delivery and now tell us they are sending a faulty product, late, and they will send some new piece sometime in the future. Which could be never. And they want their customers to do the fix. Terrible company.

I bought the heart monitor from Function101 that I guess pairs with this app but ultimately is supposed to work with the Apple Watch and the ANT+ system. But it’s never shipped and the company keeps changing the date.

Developer Response ,

Hi There! We are preparing shipments now and have been keeping our customers updated with shipping updates as this was initially communicated offered as a pre-order promotion. Please reach out to customer service team at support@function101.com as we are happy to issue you a refund on your pre-order if you do not want to wait further. Thanks!

App Privacy

The developer, Function 101, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Health & Fitness
  • Purchases
  • Location
  • Contact Info
  • Identifiers
  • Usage Data
  • Diagnostics

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

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