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How to Check Your Heart Rate on Any Android Phone

Aug 27, 2015 09:50 PM
Nov 6, 2015 05:11 PM
Finger activating a red light sensor on an orange surface.

Samsung created quite a buzz when it debuted a built-in heart rate sensor on the Galaxy S5 back in 2014, but amazingly, not many other manufacturers decided to follow suit. It's really a shame, too, since data from a heart rate sensor would go perfectly hand in hand with the increasing fitness- and activity-tracking features that most smartphones sport these days.

But as it turns out, you don't actually need to have a heart rate sensor built into your device to measure your current heart rate. Consider the way Samsung's heart rate sensor works, and you'll probably see why this is possible: First, an impulse of light is beamed into your finger, then the reflected light is measured by a separate sensor, and this data is interpreted as your current heart rate.

Most Android devices actually have all of the requisite sensors from this scenario in the form of an LED flash and a rear-facing camera, so they just need the proper software to interpret the data that can be gathered. A few apps already take advantage of this creative juxtaposition of hardware and programming, and the resulting measurement is surprisingly accurate when compared to Samsung's purpose-built heart rate sensor.

App #1: Instant Heart Rate

The first app on our list is called Instant Heart Rate, and like the rest of these options, it's available for free on the Google Play Store. Aside from the obvious, Instant Heart Rate's most unique feature is that the measurements it takes can be synced to Google Fit.

Instant Heart Rate app interface showing heart rate measurement and action buttons.

You'll get a quick tutorial when you first launch Instant Heart Rate, but essentially, all of these apps work the same way. You place your finger over the LED flash on the back of your phone, while simultaneously making sure that your fingertip entirely covers the adjacent camera sensor.

From there, just press the "Measure" button, then give the app about 15 seconds to do its thing. When it's done, you'll get your heart rate measurement, and from here, you can append notes to this measurement or share it to another service.

Heart rate monitor display showing a heart rate of 86 beats per minute.

Measuring heart rate

Heart rate monitor displaying a reading of 87 bpm, with indicators for normal and abnormal ranges.

87 bpm registered

Heart rate monitor displaying a heart rate of 85 bpm with activity selection options.

85 bpm registered in S Health immediately after.

Heart rate monitor display showing a heart rate of 86 beats per minute.

Measuring heart rate

Heart rate monitor displaying a reading of 87 bpm, with indicators for normal and abnormal ranges.

87 bpm registered

Heart rate monitor displaying a heart rate of 85 bpm with activity selection options.

85 bpm registered in S Health immediately after.

From my testing, Instant Heart rate almost always gave me a measurement that was very close to the results I got with the official S Health app on my Galaxy S6, which uses a purpose-built heart rate sensor to gather its data.

App #2: Runtastic Heart Rate

The second option we have for you is called Runtastic Heart Rate, and this app integrates seamlessly with Runtastic's other fitness tracking services.

Runtastic Heart Rate app interface with options to uninstall and open.

Again, just place your finger over the camera sensor and LED flash on the back of your phone, then tap the "Measure" button. Once you've received your heart rate measurement, you can attach notes, specify an activity that you were doing at the time, and even enter you mood.

Heart rate reading of 101 bpm displayed on a health app.

Measuring heart rate

Measurement detail screen showing a score of 101, measuring type options, and mood selection.

101 bpm registered

Heart rate monitor displaying a reading of 97 bpm with activity options.

97 bpm registered in S Health immediately after

Heart rate reading of 101 bpm displayed on a health app.

Measuring heart rate

Measurement detail screen showing a score of 101, measuring type options, and mood selection.

101 bpm registered

Heart rate monitor displaying a reading of 97 bpm with activity options.

97 bpm registered in S Health immediately after

During my testing, this app compared just as well to S Health's official results as Instant Heart Rate, but the only downside I found was that you can only measure your heart rate 3 times a day if you're not a paid member of Runtastic's subscription service.

App #3: Cardiograph

The third heart rate-measuring app on our list is called Cardiograph, and while it doesn't tie into additional fitness services like the other two entries, that could very well be a plus for a lot of people.

Cardiograph app interface with options to uninstall or open.

The main functionality is exactly the same, so hold your fingertip over your camera sensor in a way that it's also covering the LED flash at the same time. When you get your measurement, you can associate activities, and the app will keep a running history of your past heart rate data. Again, when compared to the results from the actual heart rate sensor in my Galaxy S6, Cardiograph proved to be rather accurate.

Heart rate monitor displaying a reading of 95 bpm with a stop button.

Measuring heart rate

Heart rate monitor display showing a reading of 97 bpm.

97 bpm registered

Heart rate monitor displaying a reading of 100 bpm with a log of average sleeping times.

100 bpm registered in S Health immediately after.

Heart rate monitor displaying a reading of 95 bpm with a stop button.

Measuring heart rate

Heart rate monitor display showing a reading of 97 bpm.

97 bpm registered

Heart rate monitor displaying a reading of 100 bpm with a log of average sleeping times.

100 bpm registered in S Health immediately after.

Of course smartphones are not medical devices, so you shouldn't rely solely on the information provided by these apps to make life-or-death decisions. But, considering their relative accuracy, these apps should certainly be a great add-on to your existing fitness tracking regimen.

Which heart rate-measuring app did you go with? Let us know in the comment section below, or drop us a line on Android Hacks' Facebook or Twitter, or Gadget Hacks' Facebook, Google+, or Twitter.

The next big software update for iPhone is coming sometime in April and will include a Food section in Apple News+, an easy-to-miss new Ambient Music app, Priority Notifications thanks to Apple Intelligence, and updates to apps like Mail, Photos, Podcasts, and Safari. See what else is coming to your iPhone with the iOS 18.4 update.

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