# Physiological Sigh — Cyclic Sighing, Sigh Breathing

> Science-backed breathing app for rapid stress relief using the physiological sigh. (iPhone/iPad app by emmanuel orvain.)

- Source: https://appshunter.io/ios/app/physiological-sigh/id6764079116 (this page in markdown: same URL + `.md`)
- Developer: [emmanuel orvain](https://appshunter.io/developer/1025308595)
- Category: Health & Fitness, Lifestyle
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings · 2 written reviews indexed
- Age rating: 17+
- Requires: iOS 26.2 · 43 MB
- Languages: American English, French (France), German (Germany), Italian, Japanese, Brazilian Portuguese, Chinese (Simplified, China), European Spanish
- Released: 2026-05-03
- Data updated: 2026-08-26
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/physiological-sigh/id6764079116/reviews.md

## What is Physiological Sigh?

Calm your nervous system in seconds.
Physiological Sigh is a science-backed breathing app built around the fastest stress-relief technique ever studied. No meditation experience required. No complicated programs. Just three simple phases, and you'll feel the difference in under 30 seconds.

WHAT IS THE PHYSIOLOGICAL SIGH?
The physiological sigh is a natural reflex your body already performs — spontaneously, during deep sleep — to re-oxygenate your lungs and reset your nervous system. Stanford neuroscientist Andrew Huberman and his team discovered that triggering this reflex voluntarily is the single most effective real-time tool for reducing stress and anxiety.
It works in one cycle. It works anywhere. And it works immediately.

HOW IT WORKS
Each cycle consists of three phases:

A short inhale through the nose
A second, longer inhale through the nose to fully inflate your lungs
A long, slow exhale through the mouth

That's it. One cycle takes less than 9 seconds. A full 5-minute session delivers lasting effects on your heart rate, cortisol levels, and overall sense of calm.

WHY THIS APP
Most breathing apps ask you to follow complex programs or sit through lengthy guided sessions before you feel anything. This app does one thing, and does it exceptionally well.
We built it around the physiological sigh specifically because the science is clear: of all real-time stress-reduction techniques studied, this one produces the fastest and most measurable results. No guesswork, no filler.

FEATURES
Animated breathing disc that guides you through each phase in real time
Phase card showing exactly where you are in the cycle
Elapsed and remaining time counter
Customizable phase durations — adjust each inhale and exhale to your comfort
Session length from 1 to 30 minutes
Ambient sound library — rain, ocean waves, fireplace, white noise, singing bowls, and more
Custom backgrounds — choose the atmosphere that helps you focus
Haptic feedback with a distinct pattern for each phase
Daily reminder notifications — up to 3 scheduled reminders per day
Clean, distraction-free interface designed for daily use


BACKED BY SCIENCE
The physiological sigh has been studied since the 1930s and brought into mainstream wellness by researchers at Stanford University. A 2023 study published in Cell Reports Medicine found that cyclic sighing practiced for 5 minutes daily produced greater improvements in mood and reductions in stress than other breathing techniques and mindfulness meditation.
This app puts that research directly in your hands.

PERFECT FOR
Moments of acute stress or anxiety
Pre-meeting nerves or public speaking
Winding down before sleep
Resetting after an intense workout
Building a daily mindfulness habit without the time commitment


SIMPLE BY DESIGN
Open the app. Press play. Breathe. That's the entire experience. No account required to get started, no onboarding questionnaire, no streak pressure. Just a tool that works when you need it.
Start your first session today. Your nervous system will thank you.

Physiological Sigh is not a medical device and is not intended to diagnose, treat, or prevent any medical condition. If you experience anxiety disorders or other health conditions, please consult a qualified healthcare professional.

- Terms Of Use : https://occirama.com/physiological-sigh/terms-of-use/
- Privacy Policy : https://occirama.com/physiological-sigh/privacy/

## Key features

- Guided breathing exercises
- Customizable phase durations
- Ambient sound library
- Daily reminder notifications
- Distraction-free interface
- Haptic feedback

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Premium Account / Month | $2.99 | per month |
| Premium Account / Year | $9.99 | per year |


## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/physiological-sigh/id6764079116/reviews.md

### 5/5 — Mon rituel du soir

*2026-05-12*

Un ami m’a parlé du soupir physiologique, j’ai cherché une app et je suis tombée sur celle-ci. L’animation du disque est apaisante, les sons d’ambiance sont beaux, et surtout — ça marche. Mon endormissement a changé en moins d’une semaine. Je la recommande à tout le monde autour de moi.

### 5/5 — Le meilleur euro que j’ai dépensé cette année ❤️

*2026-05-12*

J’étais sceptique mais après une semaine d’utilisation gratuite, j’ai compris que cette technique allait devenir un réflexe quotidien pour moi. Débloquer les sons d’ambiance, les rappels et les fonds d’écran c’est une évidence.

## Frequently asked questions about Physiological Sigh

### What is the Physiological Sigh app?

The Physiological Sigh app guides you through a specific breathing technique known as the physiological sigh, which is a natural reflex that helps reset your nervous system and reduce stress quickly. It's designed to be simple and effective, even for those new to breathing exercises.

### How does the Physiological Sigh app work?

The app guides you through a three-phase breathing cycle: a short inhale, a longer inhale to fully inflate your lungs, and a long exhale. Each cycle takes less than 9 seconds, and a 5-minute session can provide lasting effects on stress and calm.

### Is the Physiological Sigh app suitable for beginners?

Yes, the app is specifically designed for beginners and requires no prior meditation experience. Its simple, guided approach makes it easy to use immediately without complicated programs or lengthy sessions.

### What are the subscription options for Physiological Sigh?

Physiological Sigh offers a Premium Account subscription with monthly and yearly plans. The monthly plan costs $2.99 per month, and the yearly plan is $9.99 per year, providing access to additional features or content.

### What kind of ambient sounds are available in Physiological Sigh?

The app features an ambient sound library with options like rain, ocean waves, fireplace, white noise, and singing bowls. These sounds can be used to create a more focused and calming atmosphere during your breathing sessions.

### Can I customize the breathing exercises in Physiological Sigh?

Yes, you can customize the duration of each phase of the breathing cycle to fit your comfort level. Session lengths can also be adjusted from 1 to 30 minutes.

### What devices does Physiological Sigh support?

Physiological Sigh is available on iPhone and iPad, making it accessible for users within the Apple ecosystem. The app was last updated on May 29, 2026, indicating ongoing development and support.

### How often is Physiological Sigh updated?

The app was last updated on May 29, 2026, with version 1.2.1. This suggests that the app is actively maintained and receives regular updates to improve its functionality and user experience.

## Version history (last 5 releases)

### 1.2.1 — 2026-05-29

In this new version of Physiological Sigh, we improve user experience

### 1.2.0 — 2026-05-28

Dans cette nouvelle version de Soupir Physiologique, nous améliorons l'expérience utilisateur.

### 1.1.1 — 2026-05-23

Correctifs mineurs de Soupir Physiologique

### 1.1.0 — 2026-05-21

In this new version of Physiological Sigh, I add some beach sounds from my hollydays

### 1.0.2 — 2026-05-11

Improve app stability for Physiological Sigh app

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All apps by emmanuel orvain: https://appshunter.io/developer/1025308595

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*