iTHRVE stress management app

iTHRVE stress management app – is specially customised for professional and corporate stress and coherence feedback and training.

iTHRVE is a truly corporate capable way to do STRESS ANALYSIS and state of the art – Heart COHERENCE analysis with conventional and breakthrough 3rd order FFT (Fast Fourier Transform analysis) Coherence training. iTHRVE software capabilities walk circles around HeartMath and other HRV iOS apps – both in terms of sophistication of data analysis, breakthrough techniques to measure your heart coherence and stress, data sharing and number of different supported hardware input options to conveniently input state of the art – HRV training for iPhone.







DOWNLOAD  iTHRVE Stress Management App

iTHRVE Stress – is THE HRV (Heart Rate Variability) heart and breath training biofeedback entrainment app for iOS.

iTHRVE is also revolutionary in the number and power of input devices supported. With iTHRVE you can do more with the iPhone camera to measure your heart / HRV / pulse / breath analysis than you ever thought possible.

In addition, iTHRVE supports – chest strap bluetooth input – for long term HRV diagnosis / analysis – AND finger clip input which is quick and convenient – which ALSO displays – relative blood oxygen level (helps with breath training) – AND displays relative blood pressure – analysis including the famous MAYER WAVE of blood pressure – so importantly associated with LF (lower frequency) in the HRV (and linked to craniosacral therapy).

iTHRVE also supports – ear clip blue tooth input – meaning a very convenient non-invasive comfortable alternative way to see your heart training. And speaking of training – complete data analysis display for comparing long term training and goals – is included – WITH sophisticated file sharing capabilities – to analyze with friends and corporate associates.

Stress… & Coherence

When we feel stressed, our vitality & our internal coherence
are decreasing…

as our heart harmonic richness or inclusiveness is decreasing.

Vitality & Coherence are related to the amplitude, quality and shape
(harmonic inclusiveness, relationship/interaction)
of all the waves which are inside our body.


Specifically the proven scientific principle (Irving Dardik ‘ Making Waves’ – see discussion: )

– is that harmonic INCLUSIVENESS – functionally equal to fractality- in your heart (and HRV) –

does directly indicate immune health and longevity. This means the multi-tonal heart is healthy and the mono-tone heart is less so. This is a simple but fundamental concept. Particularly when we realize golden ratio allows the MOST number of harmonics to be present at once- constructively- and quite literally making the fractal / perfect compression.


The heart can be defined as the musical conductor of all our body waves.

Interacting with our heart waves helps recovering body waves harmony (harmonic INCLUSIVENES – perfect embedding – fractality).

This can be easily acheived through breathing sessions paced around a 0.1 Hz frequency (6 cycles/minute) – frequency in relationship with the Mayer wave blood pressure variation and also the sacro-cranial wave discovered in osteopathy.


About Heart Coherencemain_app_about_coherence_vlf_lf_hf_spectrum-bands

3 bands are usually described in HRV spectrum:


  • The VLF band (up to 2.4 cycles per minute)
  • The LF band (9 to 24 cycles per minute)
  • The HF band (9 to 24 cycles per minute)


main_app_about_coherence_vlf_lf_hf_spectrum-bands_pkHRV Coherence was originally defined as the size of the biggest LF peak compared to the amplitude of the broad HRV spectra (VLF+LF+HF bands).


This way of analysis assumes you are breathing at a constant and fixed frequency (using a pacer around 0.1 Hz – 6 cycles/minute)) during the breathing session.




Another way to extract coherence from the heart HRV spectrum, is to analyze the relationship between all the peaks present in the spectrum.

The more these peaks will be related to musical (or golden) ratios, the more your HRV will be coherent (harmonic inclusiveness – perfect embedding – fractal).


main_app_about_coherence_harmonicsThe musical relationship between the peaks is defined by musical (or golden) ratios. These ratios are related by the respective sizes of the peaks and their relative position in the spectrum.


This could be visualized as an analysis for regularly spaced patterns in the shape of the purple line linking all the peaks of the spectrum.




To evaluate the internal coherence relationship between all the peaks, we have introduced a new kind of mathematical analysis of 3rd order FFT (Fast Fourier Transform) of the broad HRV spectra.


When the relationship between the HRV spectrum peaks follows an harmonic inclusiveness shape, this way of analysis displays a new kind of coherence peak.

The size of the peak is related to the overall coherence of the broad HRV spectrum.




Single peak Coherence versus Broad spectra Coherence


Single peak Coherence

This way of analysis assumes you are breathing at a constant and fixed frequency (using a pacer around 0.1 Hz – 6 cycles/minute)) during the breathing session.

If the frequency of your breathing is changing during the session, the LF peak of the whole training session will be larger (or can even be duplicated); and the size of the biggest peak will be affected, resulting a lower global coherence value.


Broad spectra Coherence

As this Broad Spectra way of analysis takes the whole HRV spectrum into account (and not only the biggest LF peak, the coherence analysis can still be acheived, even if you do not respect (or use) a fixed breathing pacer.

Physiology does not show fixed frequencies. Physiological frequencies are waves waving around a fixed frequency. A healthy heart is a fractal heart (with perfect embedding/nesting/entanglement of its waves)



The Broad Spectra analysis allows slow breathing sessions “around” a fixed frequency (as fixed frequencies are more enriched in real physiology).





Stress & Heart Analysis

Different stress indicators can be extracted from heart rate analysis:


Coherence pattern resulting from a slow breathing session:

Resting heart rate evolution

Deep sleep analysis evolution