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Get Heart Rate Through Bluetooth 4.0 On iPhone 4S

We have integrated the new Wahoo Blue HR Heart Rate Strap in our latest Endomondo app for iPhone 4S (app vers. 5.4.0) and it is now available in our Store.

Wahoo Blue HR Heart Rate Strap is the world’s first Bluetooth 4.0 Smart heart rate strap made for the iPhone 4S (and other Bluetooth 4.0 Smart Ready devices).It may look indistinguishable from every other HR strap out there, but it takes heart-rate monitoring to completely new level thanks to Bluetooth 4.0 technology. Let’s have a closer look what the benefits of this device are:

  • Low energy usage – it runs on simple replaceable coin cell batteries
  • Accurate and stable heart rate data – fewer dropouts or HR spikes in the Blue HR
  • Easier and faster pairing – you pair the device directly in the app
  • No dongle/key/adapter required
  • Waterproof and can be submerged in water up to 5ft without issue – ideal for triathletes

The Wahoo Fitness Blue HR heart rate strap delivers accurate real-time heart rate data through the Endomondo Sports Tracker app and uploads your data directly to your profile at while you are tracking. You can also see a heart-rate graph directly in the app as displayed on the picture below.

17 Comments Post a comment
  1. Tarquin Moody #

    I have bought one of these and it works really well. It shows actual heart rate as I train.
    However, once I have completed the activity it shows the wrong number for my average heart rate and the chart just has a straight line showing the average rather than all the ups and downs. Am I doing something wrong?

    May 9, 2012
    • Hi Tarquin, glad to hear you are liking the heart rate feature! I suggest you ask your question on our Get Satisfaction page:

      Our support team answers questions there. It’s also helpful to have your question and answer there for other users in case they come across the same issue. Cheers, Angela.

      May 10, 2012
  2. Bas #

    The heart rate feature is great, but endomondo does not use it’s full potential. The absence of heart rate zones, min/max alarms, voice feedback,… is really frustrating. It seems such a basic functionality of heart rate. I found a thread on this, but it’s 6 months old. Are you guys looking in to this? It should be a great leap forward for this app. And you will close the gap with the runtastic app.

    June 29, 2012
    • Couldn’t agree more – it appears that zone based monitoring and reporting is a failing of many of the online tools in my experience.

      July 16, 2012
  3. Question #1
    The instruction here only discuss about iPhone 4S. Is it working well with iPhone 4?

    Question #2
    My location is in Indonesia, I haven’t browse the best place to buy. Anybody has a clue where the best place to buy?

    Thanks in advance.

    July 4, 2012
    • skm-runner #

      The iPhone 4 does not support bluetooth devices (v4.0). You need the dongle versions, which are virtually the same function.

      In the US, Amazon is the best source once you know what you want.

      July 20, 2012
      • Pedrosimen #

        Is this still the case? Does iPhone 4 updated to iOS 6 detect bluetooth devices? For example, I can connect to my car radio via USB to play music so I suppose I could connect BlueHR to my iPhone through bluetooth, no?

        December 10, 2012
  4. Andrzej #

    Enomondo is obsolate – try Runkeepr – it has HR zones and it’s free.

    July 23, 2012
  5. Elfrink #

    I have a iphone 4s with wahoo heartrate belt, but it don’t connect to my iphone. evverytime i connect with bluetooth low energy , enable it, search and than dissephere, iphone goes to apps pages
    who can help me

    September 26, 2012
  6. What’s the plan/status on integrating the wahoo blue sc (speed and cadence)?

    October 6, 2012
  7. Phil Rispin #

    Hi Folks, just a quick question, I have an iPhone 4, not a 4s. Does this device work with the iPhone 4?

    Phil Rispin

    April 27, 2013
    • endoeva #

      Hi Phil, it works unfortunately only with iPhone 4S and iPhone 5. Thanks

      April 29, 2013
  8. Phil #


    April 29, 2013
  9. Mike #

    Hi, I’ve been using Endmondo on my iphone 4 (not 4S) for a few years now and really like it but I’d like to start using a heart rate monitor too. Are there any HRMs which can connect to the iphone 4 without changing to a different app (want to keep Endomondo if I can) ?

    May 19, 2013
  10. mirillu #

    when android compatibility?

    October 14, 2013
  11. Android 4.3 is compatible with bluetooth 4.0, any update on the app?

    November 13, 2013
    • +1. I have Android 4.4.2 and cannot connect Polar HR7 heart rate sensor with my Endomondo App. This is so sad…(

      February 14, 2014

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