iPhone Screenshots


Use the most accurate algorithm, professionally proved,
- Get your heart rate in a few seconds
- Test your stress level
- Stay healthy while resting or exercising

Our heart rate monitor algorithm is scientifically and professionally proved; it is based on Butterworth filter, and is optimized for mobile phone usage. It is the most accurate on the market.

Our UI design has gone through countless iterations and improvements, is optimized for mobile usage, works under any environment and light conditions.

Our awesome features:
* Instant heart rate measurement
* Dynamic pulse waveform graph
* Test for stress level
* Daily statistics
* Monthly view of data history
* Ads-free: free-to-download, free-to-use

Photo by rawpixel.com from Pexels

What’s New

Version 1.4

The best Heart Rate Monitor just improved!
- Improved detection algorithm

Ratings and Reviews

4.9 out of 5
692 Ratings

692 Ratings

Boredom Rules ,

Very Inaccurate

I have tried this two times for weeks at a time. I’m permanently deleting it as it’s very inaccurate.

I use another app to monitor as well as using an iHealth blood pressure monitor. I have used this app in between the other two less than a minute apart. The other two almost always give a reading of 60 (which is what I expect since my pacemaker is set at 60). This app nearly always gives a reading of 74 or 75. I have also tried at doctor or cardiologist appointments with the same results. Obviously this app is far from accurate. I don’t recommend it at all. I’m sticking with Heart Rate (blue and white circle around a black area with an 85 in it) as it matches doctors, my blood pressure monitor, my pulse I take manually and my pacemaker settings.

SorrentoMom ,


I haven’t been able to verify if heart waves are accurate yet. The rate seems close to my Fitbit reading which I have verified as accurate. I can’t say anything about the calendar function or anything else yet since the app requires a 5star review in order to access the calendar. For a free app it seems good so far.

autumnportilla ,


Warning everyone. This app says that u have to rate it 5 stars to be able to unlock past heart rate feature so they can make the app better. Not very good and honest business to bribe people to give top rating just to unlock to use. This app is by far not a 5 star but it’s decent.


Rong Liu
52.2 MB
Health & Fitness

Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© 2018 Sunny Studio


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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