Echo: Watch Heart Rate Monitor

Shown for US

• Echo Pro — $9.99
• Echo Pro — $19.99

Last verified 6 Aug 2026

Shown for US

4.4 3654 ratings · App Store

1. 4/5Just What I Was Looking For

   I use a Garmin head unit on my mountain bike for tracking all my rides. I’m also a huge data geek and have power meters, speed, and cadence sensors on both of my mountain bikes and my road bike. I also love collecting HR data, but I can’t stand wearing the chest strap, so having an app that allows me to use my Apple Watch Ultra as an external HR monitor is awesome. Most of the time, this works great, but for some odd reason, I’ll occasionally look down at my Garmin and realize it’s not getting any HR data. I’ll then open up my phone and notice that the app has closed out on its own. Restarting the app immediately reconnects it to my Garmin. This will typically happen once per hour at most (and not necessarily every ride), but on one ride last week, it disconnected 3 times in one hour. From what I’ve read in the reviews on other comparable apps, this one seems to be the most reliable (not sure why there are so many connection issues with HR apps), but if they could get it to stop crashing, this would be 5 stars all the way.

   Matty2L · 6 Aug 2026

2. 5/5Loving this app!!!

   I’ve been using this app for a couple of weeks now and really love the convenience of not having to wear a chest strap to track my heart rate. The ease of just pressing a button to connect and start syncing my heart rate from my Apple Watch to my Nordictrack treadmill is a dream come true!! Thank you for developing it!! I love that it keeps my workout data if my watch dies during a workout. My watch will sync it to my phone once it recharges. My only issue is that I lose my workout data if I forget to stop it before I start another workout in another app that uses my watch. For instance, I usually do a mindful cooldown in Apple Fitness+ after my workout. If I don’t stop my Echo app before starting the mindful cooldown, the Echo is “interrupted” and will stop (to allow the Apple Fitness+ to take over), which is fine, but it should stop at that point and post my workout data, not lose it altogether. This has happened multiple times, so I am certain it’s not a fluke. You’d think, after so many times of losing my workout data, I’d remember to stop the echo app before starting another workout, but I guess I’m just too tired to think through that many steps. I hope the developers see this and fix it so I will stop losing my echo workout data. Surely others have noticed the same issue?

   GeekyDragonfly · 6 Aug 2026

3. 5/5Easy peasy!

   We purchased a treadmill in January of 2021 that has BLE heart rate monitor capabilities. After doing some research, I ran across a number of positive reviews for the ECHO app. When I first got the app, the brand of treadmill that we bought wasn’t listed in the available manufacturer list but I tried each one just to see if any may end up working. Sure enough, one of them worked and I emailed the ECHO team to share what I found to work. Figured it would benefit other users. Within a week, the app was updated and the brand of my treadmill was listed and worked perfectly. I’m not naïve enough to think that my email was what added my brand to the list but it just showed that they had already been working on updating the app. They even reached out to me a while after just to see if things were still working right. They certainly have. I have a series 6 watch, non-cellular, and an iPhone 11 Pro Max. Everything has worked flawlessly for about three months now. I definitely recommend the ECHO app if you have a BLE capable treadmill.

   jsampsell · 6 Aug 2026

4. 4/5It works okay

   I bought this to use with my Nordictrack treadmill, it connects well when you find the connection. The problem is it creates multiple connections in my Bluetooth settings on the machine itself. So I have to play a guessing game of which of the 6 Echo connections it is. Only solve for this is to remove the connections by exiting out of the workout going to settings and clearing devices. There has also been a lag in the connection while using it so the treadmill thinks my heart rate is still low and when the connection catches up the machine has made adjustments and my target heart rate has been smashed and I am 40bpm above where it last registered the minute before. I have contacted both companies about this. 4 stars is being generous for the 60% of the times that I use this and it works right off the bat and does not have me sprinting at full incline when the workout was supposed to be moderate intensity.

   LoganSquare2025 · 6 Aug 2026

5. 1/5Lost my 1295 apple move streak

   I installed this on Wednesday so that I could get my heart rate up onto my new Echelon X5s stationary bike from my iwatch. I used it two days but didn’t work great and kept dropping my heart rate from the bike screen, so I uninstalled the next day on Thursday. A few minutes later I saw that all my red circle from Wednesday & Thursday were gone!!!! I had enough time to still close it on Thursday by doing more exercises but Wednesday was gone and it ended my 1295 day streak (3 1/2 years) even thought it still shows my two exercises on Wednesday which add up to more than enough to close the red ring and it still shows the longest streak badge I earned that day, but the red is gone and on Thursday it said my streak is 1 day and today after I closed my red circle it says my streak is 2 day, so don’t use this app if you have a long streak and that matters to you because I used that 3 1/2 year many many time to keep exercising every day to keep the steak going and now this company has stolen that from me!!! Yes I have talked with apple technology, got a ticket and they called me and I told them what happened and they could only say sorry nothing we can do.

   CharlieH66 · 6 Aug 2026

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