Cardiio: Heart Rate Monitor 4+

HR checker & beat analyzer

Cardiio, Inc.

Designed for iPad

    • 4.7 • 57.7K Ratings
    • Free
    • Offers In-App Purchases

Screenshots

Description

Track your heart health for free with just your phone — monitor heart rate, blood oxygen, and stay fit with quick 7-minute workouts!

Track Your Heart Health for Free, Anytime, Anywhere with Cardiio. Join over 9.84 million users who trust Cardiio for accurate, easy heart health monitoring. Transform your iPhone into a powerful health tool — track your heart rate, boost fitness, and gain valuable insights, all with just your phone.


Key Features:

1. Instant Heart Rate Monitoring—Accurate and Effortless
• Place your finger on the camera for a precise reading in seconds.
• Featured on CBS’s The Doctors and ABC News.


2. All-in-One Health Tracking Made Simple
• Measure heart rate, blood oxygen, and fitness effortlessly.
• Compare your progress with others in your age, gender, and region for motivation.


3. Quick Workouts to Strengthen Your Heart
• Short, high-intensity 7-minute workouts that boost overall health.


4. Stay in Control—Monitor Progress and Build Healthy Habits
• Unlimited heart rate tracking to stay on top of your health.
• Analyze daily, weekly, and monthly trends—sync seamlessly with Apple Health.
• Export your data easily for personal records or to share with a doctor.


Ready for Deeper Insights? Unlock Cardiio PRO for the next level:

• In-depth pulse waveform analysis
• Blood pressure estimates and detailed oxygen tracking
• Tailored calorie burn estimator for your activities
• Personalized health comparisons by age and sex
• Hypothetical life expectancy based on your heart trends


Why Choose Cardiio?

Cardiio combines simplicity with advanced tracking—perfect for anyone seeking accurate, no-fuss health monitoring. Enjoy a complete set of free features, with the option to unlock more when you’re ready for a deeper dive.


What the Press is Saying:

PC Magazine: "Simple, beautiful, and pretty slick."
Cult of Mac: "Cardiio is one of those apps that wows you..."
Lifehacker: "It’s a little mind-blowing..."


How to Get the Most Out of Cardiio:

Track Daily: Start each day by checking your heart rate to set a baseline.
Follow Your Progress: Use the dashboard to track trends and adjust your goals.
Upgrade for More: Enjoy powerful free features or upgrade when you want even deeper insights.


Download Cardiio now and take charge of your heart health!


Disclaimer:

NOT FOR MEDICAL USE: Cardiio is intended for informational purposes only. If you have concerns about your heart health, consult a healthcare professional.


Additional Information:

Terms of service: https://pensive-lumiere-69f59d.netlify.com/termsofuse.html
Privacy policy: https://pensive-lumiere-69f59d.netlify.com/privacypolicy.html

What’s New

Version 4.0.18

- Performance improvements
- Bug fixes

Ratings and Reviews

4.7 out of 5
57.7K Ratings

57.7K Ratings

Shane1341 ,

Extremely Accurate!

I tried several deferent apps , some ridiculously expensive, asking for yearly subscription (Don’t know what for). None of were as accurate as this Cardiio app. and I am using the FREE VERSION. For ONLY A ONE TIME FEE OF $9.99 you can add 6 or 7 more useful features, but if you decide to have the free version, that would be good enough, There would be No pop ups of advertisement or anything like that. I really like the fact that makers of this app are very honest people. Thank you.
P.S
I READ AMOUNG SOME REVIEWS THAT THE PULSE READER ONLY WORKS LIKE 5 PERCENT OF THE TIMES. TO ME, THAT IS A GOOD THING, BECAUSE IT WANTS TO MAKE SURE THAT THE READING OF PULSE IS ACCURATE . SPECIFICALLY IF YOUR FINGERS ARE COLD OR DIRTY OR THE CAMERA LENS IS DIRTY. BUT ON MY CASE IT WAS THE COLD FINGERS. JUST PLACE THE FINGER UNDER YOUR ARM FOR FEW SECOND TO GET WARM AND TRY AGAIN . FOR ME, IT WORKED EVERY TIME.

Lowthers8 ,

Doesn’t work with iPhone 11 Pro Max

Beware - this app simply doesn’t work with the flagship Apple iPhone 11 Pro Max. The problem seems to be the three cameras built into the iPhone 11 Pro Max. I contacted the help desk who in turn simply replied that I should read the directions. Either the help desk people don’t realize their own app directions are no longer up to date for current versions of iPhone, or I hope I’m wrong but perhaps they simply don’t care about customers of this app any longer. The app directions only refer to iPhones with a single camera. If it was just experimenting with placing my finger over one of the three cameras of the iPhone 11 Pro Max, or some combination of cameras, I wouldn’t have had to see if the help desk could actually “help” a customer.
If you’re using most any version of iPhone less than the iPhone 11 Pro Max, this app is fantastic and works well.
I hope the developer decides to update this app for Apple’s flagship iPhone.
I also hope the help desk procedures get updated to provide actual help to customers.

Mawdine ,

Been using for several years…

I put this app on my phone several years ago, and used it regularly, and when my AFib got better, I didn’t use it much. Then my heart went completely out of rhythm, and for a couple of months, I wore a monitor, had an ablation, and finally have it back in some semblance working order. I rely on Cardiio every day, several times a day just for a quick heart rate. I did not pay any extra, just have the free version and that is more than enough to keep my mind at ease. This is a great app, especially for my new iPhone SE, with just the simple camera. I keep an image of my reading, and have a folder of my daily readings! Thanks, Cardiio!!

App Privacy

The developer, Cardiio, 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 Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Supports

  • Family Sharing

    Some in‑app purchases, including subscriptions, may be shareable with your family group when Family Sharing is enabled.

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