*** This app requires bluetooth hardware to work. We are currently creating a list of suitable hardware devices. Because we are measuring precise HRV data the sampling frequency of the device as well as how the data is handle is crucial. We know it works very well with the polar chest strap and will be testing more and creating a comprehensive list. ***

Regain focus and release stress with the Coherence Heart trainer.

Negative emotions don’t just feel bad, they are killing you…

The data is overwhelming showing your negative emotions are the highway to disease. Feeling anxious, angry, frustrated, overwhelmed and stressed breaks down your immune system so your body can’t fight back.
But if you are reading this you are one of the lucky ones.
There is a simple way you can take back control. You can train yourself to never feel anxious again.

You never have to feel anything you don’t want to feel again.

It starts with your breathing. Breathing is the fastest way to control your physiology. Coherent physiology melts away negative emotions.
Your physiology is like an orchestra. If you feel anxious the orchestra is out of tune. The most important instrument in your body’s orchestra is your Heart Rate Variability. If you get that in tune everything else follows.

Are you letting negative emotion ruin your life?

Studies in the US show 23% of women and 14% of men suffer from an anxiety disorder. Thousands more live in quiet desperation. Do you hide it from your family and friends? Do you feel too ashamed to ask for help? Do you believe it will just sort itself out? How long ago was that? How much has it been affecting your life?

Control your physiology with this app

The Coherence Heart Trainer app designed by Complete Coherence tunes your HRV. Complete Coherence is the world leader in heart rate variability research. With the largest database of 24 hour HRV monitoring, nearly 100,000,000 heart beats!
This app is our newest technology so you can get the most accurate measure of your HRV. Accurate measurement leads to faster results.

Simple and easy to use

Download the app. Pair your hardware. Follow the customizable breath pacer. Then use our patented biofeedback algorithm to train your coherence.

Get back control today- How would you feel?

To have something to focus on whenever you start feeling those negative emotions. You’ll know exactly how to focus your mind and how to breathe to have complete coherence. No one can ever make you feel anything you don’t want to feel.
Physiological coherence leads to coherence in all areas of your life.

When choosing a heart rate monitoring device to provide heart rate data, if Healthkit support has been enabled, it allows selection of devices paired with healthkit in addition to any found using Bluetooth low energy.

In the user interface, access is requested on starting the app, and if a Healthkit data provider is found, then this is presented as an option in the pairing dialog explicitly.

What’s New

Version 2.03

Removed graphical error where coherence appeared to be calculated in absence of Bluetooth connection.

Ratings and Reviews

3.7 out of 5
7 Ratings

7 Ratings

Lakartoza ,

Great product thank you!

I love this product. What would help me is if the Pla Audio when coherent would play! There's a problem on iOS 10.3.1 rn. When you click any of the audio options a blank screen tries pops up but then disappears. Would love the feature to work!

Korky Bulchik ,


update to increase size(fill screen/enhanced graphics and visuals) as well as dark mode would be exciting.

InThaTrees ,

Getting better

It was crashing on my iPod touch but that's fine after updating my os. Still crashes when trying to change the breathing sound, which reduces my use of the app because the sound is super annoying. Harsh, tinny, even through headphones. But the basic function of the app works great and I still use it to tune my sense of what state I'm in. Mostly use the free app from Do As One to guide my breathing because they use a simple sound of someone breathing to guide you, and it's not harsh, like other breathing sounds I've heard some apps use. Bad sound design is all over this niche industry for some reason. The Pranayama app had it best, but was very unstable and didn't have biofeedback. This app is the most advanced in function that I've used, nearly perfect. Looking forward to improvements or trying it on a device that doesn't crash when I try to change the breathing sound


Complete Coherence Limited
19.6 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

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

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