# Box Breathing - CalmNest — Breathing Exercise & Sleep Aid

> Guided breathing app for natural sleep with sleep insights and smart alarm. (iPhone/iPad app by Pentarab.)

- Source: https://appshunter.io/ios/app/box-breathing-calmnest/id6754578929 (this page in markdown: same URL + `.md`)
- Developer: [Pentarab](https://appshunter.io/developer/1453947051)
- Category: Health & Fitness, Lifestyle
- Price: Free with in-app purchases
- Rating: 1.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 26.0 · 38 MB
- Languages: American English, Japanese, Korean, Chinese (Simplified, China)
- Released: 2025-11-07
- Data updated: 2026-10-09
- Monetization: subscription

## What is Box Breathing?

Lying awake scrolling your phone at night?
CalmNest guides you to sleep naturally with science-backed breathing techniques.

— 4 BREATHING METHODS —

Rhythmic Breathing: Actively follow the on-screen slider to build a steady breathing rhythm that calms your mind.
Box Breathing: Inhale 4s → Hold 4s → Exhale 4s → Hold 4s. A proven pattern used by athletes and military to reduce stress.
4-7-8 Breathing: Inhale 4s → Hold 7s → Exhale 8s. The classic slow-exhale pattern for falling asleep.
Relaxation Breathing: Breathe in naturally, exhale slowly, and sink into deep relaxation.

— SLEEP INSIGHTS —

Understand your sleep patterns with 7-day analytics:
- Sleep onset trend (actual & 3-day moving average)
- Breathing method effectiveness comparison
- Weekly sleep pattern analysis
- Sleep quality score & consistency rating
- Personalized optimal sleep time recommendation

— SMART WAKE ALARM —

Set a wake time and your session ends automatically. Choose from 3 alarm sounds with preview support.

— LIVE MONITORING —

Track your session in real time through Dynamic Island and Lock Screen widgets. See elapsed time, breathing count, and helpful sleep tips at a glance.

— CUSTOMIZABLE —

- Auto brightness adjustment (min/max settings)
- Background music & breathing guide sounds
- Adjustable slider size (short/medium/long)
- Supports English, Korean, Japanese, Simplified Chinese

Focus on your breathing before bed.

— Subscription Details —
• CalmNest Premium
• Length: 1 month or 1 year, automatically renewed each period
• Price: see in-app pricing for your region
• Payment is charged to your Apple Account at confirmation of purchase
• Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period
• Subscriptions may be managed and auto-renewal turned off in your Account Settings on the App Store

Terms of Use (EULA): https://www.pentarab.com/calmnest/terms
Privacy Policy: https://www.pentarab.com/calmnest/privacy

## Key features

- Guided breathing techniques
- Sleep pattern analytics
- Smart wake alarm
- Live monitoring widgets
- Customizable settings
- Multiple breathing methods

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| CalmNest Premium Yearly | $19.99 | per year |
| Weekly Premium | $2.99 | per 7 days |
| CalmNest Premium Monthly | $3.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| CalmNest Premium (Lifetime) | $39.99 | one-time |


## Is Box Breathing safe?

Not enough ratings yet to assess Box Breathing.

## Is Box Breathing legit?

Box Breathing - CalmNest appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Box Breathing is 75 out of 100 points across 7 verification signals from App Store and developer data.


## Frequently asked questions about Box Breathing

### What are the main breathing methods offered by CalmNest?

CalmNest offers Rhythmic Breathing to build a steady rhythm, Box Breathing (4s inhale, 4s hold, 4s exhale, 4s hold) for stress reduction, and Relaxation Breathing for deep relaxation.

### Does CalmNest offer any sleep tracking features?

Yes, CalmNest provides 7-day sleep insights, including sleep onset trends, breathing method effectiveness, weekly pattern analysis, sleep quality scores, and personalized optimal sleep time recommendations.

### What customization options are available in CalmNest?

Users can customize auto-brightness adjustment, background music and breathing guide sounds, slider size, and the app supports English, Korean, and Japanese languages.

### How does the Smart Wake Alarm work in CalmNest?

You can set a desired wake time, and the session will automatically end. The alarm includes three sound options with preview support.

### Can I monitor my breathing session in real-time with CalmNest?

Yes, CalmNest features live monitoring through Dynamic Island and Lock Screen widgets, allowing you to see elapsed time, breathing count, and sleep tips at a glance.

### What are the subscription plans for CalmNest?

CalmNest offers a Premium Yearly subscription for $19.99, which includes a 7-day free trial. A monthly subscription is also available at $3.99.

### How can I manage my CalmNest subscription?

Subscriptions can be managed and auto-renewal turned off in your Account Settings on the App Store at least 24 hours before the end of the current period.

### Is CalmNest available on multiple devices?

Currently, CalmNest is supported on iPhones. The app is rated for ages 4+.

## Version history (last 5 releases)

### 1.2.0 — 2026-10-02

New 4-7-8 breathing, sleep-onset time in minutes, and the screen now stays on for the whole session.

### 1.1.0 — 2026-09-29

Seasonal soundscapes: Harvest Moon for Halloween (free Oct 16 – Nov 1) and Silent Night for Christmas (free Dec 21 – 31), with a soft glowing breathing light and seasonal app icons.

### 1.0.33 — 2026-09-22

Minor bug fixes.

### 1.0.32 — 2026-09-21

Improved translations and clearer in-app wording.

### 1.0.29 — 2026-09-14

O Pro está agora disponível de três formas: um plano mensal, um plano anual ou uma compra única que desbloqueia tudo para sempre.

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All apps by Pentarab: https://appshunter.io/developer/1453947051

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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 2026-10-09.*