Biofeedback tools · Heart coherence
Inner Balance Coherence Plus
A Bluetooth coherence sensor that brings cardiac coherence training to your phone or tablet, for personal practice or in session.
iPhone, iPad & AndroidLifetime HeartMath appSingle-user
Free shipping worldwide · prices in USD
$249.00

How it works
From your pulse to a live coherence score.
A small Bluetooth ear-clip sensor pairs with HeartMath’s mobile apps. The sensor reads your pulse wave and turns it into a live heart rate variability (HRV) signal. The app converts it into a moment-by-moment coherence score that you can watch change as you breathe, relax or shift your emotional state.
Built for individual practice
Train on your own, or follow a programme with a cardiac coherence coach.
Useful in session too
Health and wellness professionals use the built-in tachogram and spectrogram to show clients, in real time, how their physiology responds to a technique.
Free lifetime app subscription
Your purchase includes a free lifetime subscription to the HeartMath app, HeartMath’s most complete coherence-training app to date.
Why coherence training
Find the calmer state on purpose, not by chance.
Heart rate variability, the natural beat-to-beat change in heart rate, is one of the clearest windows into how your nervous system handles stress. When you are tense or scattered, the rhythm looks jagged. When you are calm and centred, it settles into a smoother, more even pattern. Coherence training uses that pattern as real-time feedback to help you reach and hold the calmer state.
One sensor, three apps
Choose the way you like to practise.
Inner Balance
The original coherence app, focused on real-time biofeedback for building and tracking a personal practice.
HeartMath
HeartMath’s newest and most complete app: a structured 7-day introduction to coherence, plus ongoing guided techniques and biofeedback.
Global Coherence
Practise alongside a worldwide community and contribute your coherence to a shared global field, with biofeedback on your own session.
The sensor works with recent iPhone and iPad models, and with Android phones and tablets. The apps are free to download from the App Store and Google Play.
What’s included
Everything to start practising today.
- Inner Balance Coherence Plus Bluetooth sensor (new, improved Bluetooth version)
- Ear clip sensor
- Charging cable
- Quick start guide
- Free lifetime subscription to the HeartMath app
What users say
Trusted by practitioners.
“I was looking for a mobile solution to support my clients outside of sessions. Inner Balance has become the go-to tool that I prescribe to everyone: they train at home, visualize their progress, and arrive at their appointments with concrete data. The Bluetooth sensor is discreet and works perfectly on all the smartphones I’ve tested.”
Véronique T., Certified Heart Coherence Coach
“As a general practitioner, I need a tool that my patients can use daily without technical assistance. Inner Balance perfectly meets this need: the app is intuitive, the visual feedback is immediate, and access to the three apps (Inner Balance, HeartMath, and Global Coherence) offers ideal progression according to each patient’s level.”
Dr. Annick P., General Practitioner
“I am a sophrologist and I use the Inner Balance as a monitoring tool between sessions with my clients. The integrated tachogram and spectrogram allow me to visually validate progress during consultations. The instruction booklet and the included online course allowed me to get started quickly and without frustration.”
Patricia R., Sophrologist
“What I like about the Inner Balance is its versatility: I use it for my own personal practice morning and evening, and I also use it in sessions with my patients to show them their coherence level in real time. The new, improved Bluetooth sensor is significantly more stable than the old version, without the cumbersome wires.”
Bruno K., Occupational Psychologist
“I work with elite athletes, and Inner Balance has become an essential tool in my practice. The athletes appreciate its portability and the precision of the biofeedback. With the Global Coherence app, some have even found an additional dimension of motivation in their heart coherence practice.”
Jean-Marc O., Sports Mental Coach
Questions
Frequently asked questions
Is it for one person or several?
It is a single-user sensor, built for individual practice. For multiple client profiles, see emWave Pro.
Which devices does it work with?
iPhone, iPad, Android phones and Android tablets. The sensor connects by Bluetooth.
Can professionals use it with clients?
Yes. Many professionals use it in session, using the tachogram and spectrogram to show clients how their physiology responds.
Is shipping included?
Yes. Shipping is free worldwide. Prices are in US dollars, with Canadian taxes included for customers in Canada.
Ready to practise coherence anywhere?
Inner Balance Coherence Plus is $249 USD with free shipping worldwide.
See the other Biofeedback Tools.