Kardia - Deep Breathing Relaxa

In-app purchases
4.5
1.73K reviews
100K+
Downloads
Content rating
Everyone
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About this app

Do you feel stressed, anxious or unfocused? Do you have trouble falling asleep? A simple deep breathing exercise can help you in a few minutes.

Let Kardia guide your breath with sounds and the smooth movement of the sphere. Feel your body and mind relax, and your heart rate vary in harmony with your breath. This powerful and simple exercise is accessible to everyone, including kids.

Here is what users say:
"Very good app. Really! And I've tested several of them. Congratulations!" François
"Very useful to practice cardiac coherence wherever you are. Very simple to use." Magali
"Super app that helps me everyday Olivier



Uses
- Stress relief
- Calm down anxiety attacks
- Cardiac coherence
- Sleep aid: fight insomnia by focusing on deep breathing
- Relaxation
- Yogic breathing
- Meditation sessions and sophrology exercises
- Concentration improvement

Features
- Breathing rate between 1 and 15 cycles/min, adapted to a wide range of breathing exercices, including cardiac coherence and deep breathing
- Inhalation/exhalation ratio setting
- Target mode: automatically slow down or speed up the breathing rate during the session, to help you calm down, fall asleep, or get ready to go
- Advanced mode: set inhalation and exhalation durations with 0.1s precision
- Exercise duration between 1 minute and 1 hour.
- Usable without looking at the screen thanks to guiding sounds and vibrations
- No ads

During ten days, try those exclusive features for free:
- Large choice of high quality relaxing sounds
- End session sound
- Colors setting
- Visual breathing cues
- Customized vibrations
Unlock all those features with a single in-app purchase.

HRV, paced breathing and cardiac coherence
With Kardia, you can practice heart rate variability (HRV) training through paced breathing. By breathing at a specific rate, around 5.5 cycles/min, your HRV increases and becomes regular. This state is known as cardiac coherence, or cardio-respiratory coherence. Scientific studies have demonstrated that it has beneficial effects on stress and anxiety level, blood pressure, depression and sleep.

The best breathing rate is different for everyone. With Kardia, you can set very precisely the exercise frequency, so you will just need a few tries to find out the value that gives you the best results.
Updated on
Aug 31, 2023

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Financial info, App activity and 2 others
This app may collect these data types
Financial info, App activity and 2 others
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

4.5
1.63K reviews
K
May 20, 2020
I can't even use this app because the orientation mode won't lock; the screen keeps flipping between portrait mode and landscape mode and won't respond to my phone orientation lock. My back button doesn't work either. I'm also not a huge fan of all the swiping for controls. It's too much to remember when I just want to relax.
11 people found this review helpful
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K.
June 14, 2023
Amazing app. Thank you. My only question is how does the timer work? I use sound-guided mode and don't look at the screen, so I can't track time. The exercise goes over the set time and doesn't stop or signal in any way. Is it designed to work like that or am I facing a glitch? UPDATE: It worked with Kardia+.
2 people found this review helpful
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A Google user
February 2, 2019
Amazing! I was going through what is commonly know in psychology as "fragmentation" and this application definitly played an important role in my recovery. The design is simple, but practical, and the customizations are very helpful. This is the best app for breathing exercises I've found so far. Well worth buying the premium version (which is so cheap anyway). Thank you, whoever you are, for creating this.
15 people found this review helpful
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Labna
February 13, 2019
Thank you very much for your review ! I'm glad the app helped you. Having this kind of feedback is precious and encourages me to continue improving Kardia.

What's new

Kardia is now ready for Android 14!