# Deep Breathing: Calm & Sleep — Box, 4-7-8 & Calm Breathing

> Box, 4-7-8 & Calm Breathing (iPhone/iPad app by Reentry Systems Unipessoal Lda.)

- Source: https://appshunter.io/ios/app/deep-breathing-calm-and-sleep/id6786431781 (this page in markdown: same URL + `.md`)
- Developer: [Reentry Systems Unipessoal Lda](https://appshunter.io/developer/6786431783)
- Category: Health & Fitness, Lifestyle
- Price: Free
- Age rating: 4+
- Requires: iOS 16.4 · 60 MB
- Languages: American English
- Released: 2026-08-27
- Data updated: 2026-10-01

## What is Deep Breathing?

Deep Breathing Exercises guides you through scientifically studied breathing techniques with a smooth, animated orb visualizer. Just open the app and breathe, no sign-up and no account required.

BREATHING MODES

• Box Breathing (4-4-4-4) — equal inhale, hold, exhale, hold. A go-to for focus and stress relief used by athletes and first responders.
• 4-7-8 Breathing — extended exhale and hold pattern associated with relaxation and sleep onset.
• Coherent Breathing (5.5-5.5) — slow, even rhythm at roughly 5 breaths per minute, studied for heart rate variability and calm.
• Physiological Sigh — double inhale followed by a long exhale. A fast reset for stress moments.

Plus more guided patterns inside the app: Ujjayi, Belly Breathing, and Pursed-Lip Breathing.

FEATURES

• Animated orb visualizer — a gentle, pulsing cue that expands and contracts with each phase of your breath.
• Audio soundscapes — drone tones, binaural beats, and pink noise to deepen focus. Phase cue tones mark each breath transition.
• Haptic feedback — subtle vibrations guide your breath, so you can breathe eyes-closed.
• Session timer — open-ended or timed sessions (30 seconds, 1, 3, 5, or 10 minutes).
• Adjustable speed — slow down or speed up any pattern to match your capacity.
• Local session stats — sessions and minutes tracked on-device, no account required.
• Keep-awake mode — screen stays on during your session.
• Dark and light mode support.

BREATHING AND YOUR HEALTH

Deep Breathing Exercises provides timed breathing guidance based on established techniques. It is not a medical device and does not diagnose, treat, or prevent any condition. Consult a qualified healthcare provider before starting any new breathing practice, especially if you have a respiratory condition, cardiovascular issue, or are pregnant.

PRIVACY

We do not sell your data. Analytics are aggregated and not tied to advertising. The app works fully without an account; optional sign-in syncs practice sessions and settings across devices. See our Privacy Policy at deepbreathingexercises.com/privacy.

## Is Deep Breathing safe?

Not enough ratings yet to assess Deep Breathing.

## Is Deep Breathing legit?

Deep Breathing: Calm & Sleep has limited verification signals. The AppsHunter Legitimacy Score for Deep Breathing is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-08-27

No release notes.

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## Related topics

[deep breathing](https://appshunter.io/ios/topics/deep-breathing) · [free deep breathing](https://appshunter.io/ios/topics/free-deep-breathing)

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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 2026-10-01.*