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Most accurate and easy-to-use heart rate app
- Used in heart research at UCSF!
- Get your heart rate in less than 10 seconds
- Check your stress levels
- See trends and insights

Just featured in Apple's new TV Ad “Strength” - use your iPhone to find out your heart rate in less than 10 seconds!

You DON’T need a dedicated heart rate monitor to get your pulse, download Instant Heart Rate today and use your camera’s flash to see how healthy you are!

With over 35 million users, the award-winning Instant Heart Rate app is all over the web.

Featured in: CNN, The New York Times, Chicago Tribune, The Guardian, and many more.

#1 Heart Rate app in United States
#1 Heart Rate app in Japan
#1 Heart Rate app in United Kingdom
#1 Heart Rate app in Australia
#1 Heart Rate app in Germany
#1 Heart Rate app in France
#1 Heart Rate app in China
#1 Heart Rate app in Russia
#1 Heart Rate app in Canada
… and many more.

Instant Heart Rate is continuously rated as the world’s best mobile heart rate measurement app and is trusted by Stanford’s leading cardiologists for use in clinical trials.


* Place the tip of your index finger on the iPhone’s camera, and in a couple of seconds, your pulse will be shown!

* Instant Heart Rate detects a color change in your finger tip each time your heart beats and uses an advanced algorithm to show you your heart rate.

* A real-time chart will show you every heartbeat, similar to pulse oximeters used in hospitals.



√ Heart rate measurement 

√ Heart Rate Activity Zone Calculator

√ Pulse waveform graphs

√ Real-time photoplethysmogram (PPG) graph

√ Continuous or Auto-Stop mode

√ Unlimited data storage and tags

√ Export data for registered users

√ StandUp test for fatigue and fitness testing

√ Sharing to Twitter and Facebook

√ Apple Health App Support (Instant Heart Rate Settings -> Health App Sharing)


Upgrade to Premium to receive unlimited access to Premium Programs and Playpen Freeplay workouts, HD videos, dynamic and motivational audio, workout email summaries with tips and advice on healthy living, priority support, and more through renewable iTunes subscription.

We offer auto-renewing subscriptions with the following specifications:
- Subscriptions are 1 month or 12 months long
- Subscriptions are $9.99 USD per month or $59.99 USD per year.
- Payment will be charged to iTunes Account at confirmation of purchase
- Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period
- Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal
- Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase
- No cancellation of the current subscription is allowed during active subscription period
- Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication.
- our Privacy Policy and terms of use: https://www.azumio.com/page/privacypolicy

NOTE: Works best on iPhone 4/4S/5/5S/6/6S/7/7+ because it has flash. On iPhone 3GS and iPod touch the app has to be used in good lighting.

NOTE: Make sure that your fingertip completely covers the camera lens. Press gently, since pressing too hard reduces blood flow in your finger and it's harder to get a result. Make sure that your fingers are not cold. This app is for recreational and fitness use only!


"Continued use of GPS running in the background can dramatically decrease battery life."

From our heart to yours,

Azumio Team

What’s New

Version 5.298

Here's what we have for you in this update:
- Bug fixes

Love Instant Heart Rate? Leave us a review!
Have questions? Feedback? Email us at support@azumio.com

Ratings and Reviews

4.9 out of 5
169.6K Ratings

169.6K Ratings

CreateANickname!!! ,

Great App!

I am a 38 yo female with Sarcoidosis. I also have a vascular defect in my heart. One of my coronary arteries is basically nonfunctional because it didn’t grow with my heart as I got bigger. I have runs of SVT and LOTS of palpitations/PVCs. So I have to take a beta blocker twice a day to keep myself from going into SVT and subsequent VT or VFib. Rapid ventricular or even supraventricular arrhythmias tend to eventually deteriorate into lethal ones because our hearts aren’t supposed to beat at those rates for very long. While this app doesn’t give you an EKG reading, it does accurately measure your pulse rate and you can see when there are irregularities. For instance, when I have palpitations, it is seen as a dip or a pause on the screen. It just confirms the irregularities. I am a registered nurse so that’s how I know what is going on with my heart, but this is definitely useful for anyone who needs to monitor their pulse for whatever reason. The best part is that it’s completely FREE! You can pay for other features if you want them, but I am very appreciative of this free service that helps me to monitor my condition. Thank you!

lala_juju ,

There’s no way this is accurate

I’ve been using this app for almost three months. The great thing is you can check multiple times for free. However, one minute it will read normally. The next minute, w/o having moved or done anything different, my heart rate is suddenly 30 BPMs higher, and it slowly goes down. The wavelength freaks me out because it will often show an array of different patterns. I do have sinus tachycardia, but when this shows 85 BPM one minute and 135 BPM literally the next minute, it terrifies me. I recently went to my doctor because I was so freaked out about my heart, and I was having terrible panic attacks. Turns out, aside from the sinus tachycardia I was experiencing due to a panic attack that started when I got there, there were no other abnormalities. All of my blood work came back fine. I was just dealing with high anxiety. Every list names this one as the most accurate, but it doesn’t seem to be for me. Then I decided to pay the $9.99 for the premium, and what did I get? A stand up stress test? That does me a lot of good when I already know I have orthostastic hypotension. I get a low score every time. I asked for an insight report . They said would be in my inbox soon. This was days ago. I just canceled my subscription. Not a good app for someone with panic disorder. But it’s nice you can check an unlimited amount of times for free.

Happylittlecamper ,

May have saved my life

When I was 51, I found myself feeling really sluggish. I thought it may have been menopause or maybe depression. At the same time I kept using the app to check my heart rate and it repeatedly came out in the low 40's. This went on for a couple of weeks until I finally took my results in to the cardiologist. At first he didn't believe me and since I had no other symptoms he said the app was just wrong. Because I had consistently been get such low pulse reading I kept pestering him and He reluctantly order a Holter monitor test. When the results came back the next evening I was told to get to the ER asap and had a pacemaker the next morning. Turns out had complete heart block which is an electrical issue not a cholesterol/artery one. Without this app detecting my low pulse I would not have pushed the cardiologist the run any tests and would have listened when he said I was fine. I am so grateful for this app. Not sure what would have happened without it.


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App Privacy

The developer, Azumio Inc., 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 Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Identifiers

Data Linked to You

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

  • Health & Fitness
  • Contact Info
  • User Content
  • 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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