The Scosche Rhythm+ is a really popular armband heart rate monitor for the Peloton bike and other indoor cycling bikes. One of the reasons so many people like the Scosche Rhythm+ is it's price and ease of use. Instead of a more intrusive heart rate monitor that you need to wrap around your chest, you simply need to put the Scosche Rhythm+ on your forearm or upper bicep area to get an accurate reading.
The Scosche Rhythm+ has been on the market for years and many people still love it because it is relatively inexpensive, and it works seamlessly with the Peloton bike and other indoor cycling bikes. TailHappyTV made a quick Scosche Rhythm+ review showing how this armband heart rate monitor works with the Peloton bike and how you can connect it to the Peloton app to get your metrics displayed on the screen. There are less expensive and also more accurate heart rate monitors on the market, but if you want a good value for your Peloton heart rate monitor the Scosche Rhythm+ is a good option in those categories. If you don't like this device you may want to take a look at the official Peloton heart rate monitor and see how it compares Scosche Rhythm+.