Name: Sukoon
Availability: InStock
Author: CS42

Out Now

Sukoon is live on the App Store

Thanks to everyone who joined the waitlist. The wait is over. Sukoon Sounds is out now for iPhone. Free, no ads, and no in-app purchases.

Free · iOS 17.0 or later

View on the App Store (opens in a new tab)

About Sukoon

What is Sukoon?

Sukoon for iOS lets you blend high-quality nature sounds into your own personal soundscape, and now pairs it with a set of guided breathing exercises. Crafted for focus, rest, and sleep.

Sukoon (سُكُونْ) is an Arabic word meaning stillness. In Arabic script, it is also a diacritical mark (◌ْ), a small circle placed above a letter to indicate silence: no vowel, no motion, just pause.

Key Features

Whether you need to focus on work, wind down after a long day, or drift off to sleep, Sukoon gives you full control over each individual sound layer (and a calm, animated breathing guide) to craft exactly the atmosphere you need.

Soundscape Mixer
Blend ten sound layers at once, nine from nature plus brown noise, each with independent volume, and a one-tap "Surprise me" mix.
Guided Breathing
Six breathing patterns (Box, 4-7-8, Coherent, Physiological Sigh, Triangle and Energize) plus a custom rhythm builder, followed by a glowing orb that expands and contracts to guide each breath.
Curated Scenes
One-tap moods like Rainy Night, Ocean Dawn, and Campfire, or save three of your own mixes.
Streaks & Journey
Track your breathing streak, mindful minutes, and session history, all kept privately on your device.
Five Calming Themes
Choose from Sukoon (forest at dusk), Twilight, Ember, Ocean, and a light Daylight theme, all gentle on the eyes.
Sleep Timer
Set a timer and your soundscape gently fades out, perfect for falling asleep.
Background Playback
Keep your soundscape playing while using other apps or when your screen is locked.
Offline & Private
Every sound is bundled in the app. No internet, no account, no tracking, ever.

Available Sounds

Rain, Rain on Window, Campfire, Ocean Waves, Waterflow, Thunder, Birds, Doves, Crickets and a synthesised Brown Noise, with more sounds planned in future updates.

Breathing Patterns

Box Breathing, 4-7-8 Calm, Coherent, Physiological Sigh, Triangle, Energize, and a Custom Rhythm you build yourself, with optional breath sound cues and haptic guidance.

Screenshots

Preview how Sukoon looks on iOS

Sukoon soundscape mixer with a rainy-night mix playing and a Now Playing bar — Soundscape mixer

Guided breathing patterns: Box, 4-7-8, Coherent, Physiological Sigh and more — Guided breathing

A breathing session with the animated glowing breath orb — Breathe with the orb

Journey tab showing a breathing streak, session stats and theme picker — Streaks & themes

About screen

Sukoon mixer in the light Daylight theme — Light theme

The Story

Why Sukoon exists

“Almost everything will work again if you unplug it for a few minutes, including you.”

Anne Lamott

If you are anything like me, you used to open several tabs at once, one for rain, one for a campfire, one for waves, just to put together your perfect mix of sounds. The thought came from there, and so the app was created.

I have been using it myself for a few months now, and in September 2026 it was finally released.

I hope you enjoy it. If you would like to suggest another sound, ask for a feature, or report a bug, please get in touch at hello@cs42.org.

Peace.

App Information

Quick facts about Sukoon for iOS

Developer: CS42
Availability: Out now on the App Store
Price: Free
Category: Health & Fitness
Compatibility: iPhone · iOS 17.0 or later
Languages: English, Arabic
Age Rating: 9+
In-App Purchases: None · No ads
Account: Not required
Data Collected: None
Works Offline: Yes, fully offline

Privacy Policy

Effective date: July 19, 2026Last updated: October 8, 2026

We don't collect any personal data. No accounts, no tracking, no analytics, no third-party services. Your saved mixes, breathing history, and preferences stay on your device.

CS42.org ("we", "us", "our") built the Sukoon app as a free application. This page is used to inform users regarding our policies with the collection, use, and disclosure of personal information.

1. Information We Collect

We do not collect any personal data. Sukoon is designed with privacy at its core. The App:

Does not require account creation or login.
Does not collect names, email addresses, or any personally identifiable information.
Does not track your location.
Does not access your contacts, photos, camera or microphone, and never reads anything from Apple Health.
If you turn on Apple Health, it saves each completed breathing session to Health as Mindful Minutes. That is the only thing it writes, and nothing is sent to us.
If you turn on the daily reminder, it is a local notification scheduled on your device. No server is involved.
Does not use cookies or tracking technologies.
Makes no network connections. All sounds are bundled and playback works fully offline.

2. Data Stored on Your Device

Sukoon stores your preferences and activity locally on your device using standard iOS storage, including:

Saved sound mixes and per-track volume settings.
Your chosen theme and last-used breathing pattern.
Custom breathing rhythms you create.
Breathing session history and your streak, session count, mindful minutes, and breath totals.
The one-tap check-in after each session (same, softer or calm).
A copy of your streak and theme, shared with Sukoon's own widgets on your device.

This data never leaves your device and is not transmitted to any server. It exists only to power the app's features for you.

3. Analytics & Third-Party Services

Sukoon does not integrate any third-party analytics, advertising, or tracking services. We do not use services such as Google Analytics, Firebase Analytics, Facebook SDK, or any similar tools.

4. Data Sharing

We do not share any data with third parties. Since we do not collect personal data, there is no data to share, sell, or transfer to anyone.

5. Children's Privacy

Sukoon does not collect personal information from anyone, including children under the age of 13. The App is rated 9+. It contains no objectionable content, and the rating reflects the self-care and wellness guidance it offers.

6. Apple App Store

When you download Sukoon from the App Store, Apple may collect certain information as described in Apple's Privacy Policy. This data collection is governed by Apple and is outside our control.

7. Data Retention

All user preferences are stored locally on your device. Uninstalling the App will remove all locally stored data. We have no servers storing any user data.

8. Your Rights

Since we do not collect personal data, there is no personal data to access, correct, or delete on our end. You can clear all App data at any time by uninstalling the App from your device.

9. Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new policy on this page. You are advised to review this Privacy Policy periodically.

10. Contact Us

If you have any questions or concerns about this Privacy Policy, contact us at hello@cs42.org.

Last updated: October 8, 2026

Terms & Conditions

Effective date: July 19, 2026

By using Sukoon you agree to use it for personal, non-commercial purposes. The app is provided as-is, with no warranty. Its soundscapes and breathing exercises are for general relaxation only. Sukoon is not a medical device.

1. Acceptance of Terms

By downloading, installing, or using the Sukoon mobile application ("the App"), you agree to be bound by these Terms and Conditions. If you do not agree, please do not use the App.

2. Description of Service

Sukoon is a free application that lets users blend nature sounds into a personal soundscape and follow guided breathing exercises for relaxation, focus, and sleep. The App is provided by CS42.org ("we", "us", "our").

3. Usage Rights

We grant you a limited, non-exclusive, non-transferable, revocable licence to use the App for personal, non-commercial purposes on any Apple device that you own or control, subject to the Apple Media Services Terms and Conditions.

4. Intellectual Property

All content within the App, including but not limited to audio recordings, visual designs, logos, icons, and code, is the property of CS42.org or its licensors and is protected by applicable intellectual property laws. You may not reproduce, distribute, modify, or create derivative works from any App content without prior written consent.

5. User Conduct

You shall not reverse-engineer, decompile, or disassemble the App.
You shall not use the App for any unlawful purpose.
You shall not attempt to gain unauthorized access to the App's systems or servers.
You shall not distribute or make the App available over a network where it could be used by multiple devices at the same time.

6. Disclaimers

The App is provided "as is" without warranty of any kind, either express or implied. We do not warrant that the App will be uninterrupted, error-free, or free of harmful components. Sukoon is not a medical device and is not intended to diagnose, treat, cure, or prevent any medical condition.

7. Health & Breathing Exercises

The breathing exercises in the App are provided for general wellness and relaxation only and are not medical advice. Breath-holding and paced breathing are not suitable for everyone. Consult a qualified healthcare professional before starting, especially if you are pregnant or have a heart, respiratory, blood-pressure, or anxiety condition. Never practise while driving, operating machinery, or in water. Stop immediately and breathe normally if you feel dizzy, light-headed, or uncomfortable. You use these exercises at your own risk.

8. Limitation of Liability

To the fullest extent permitted by law, CS42.org shall not be liable for any indirect, incidental, special, consequential, or punitive damages, including loss of data or profits, arising out of your use of the App.

9. Changes to Terms

We reserve the right to modify these terms at any time. Changes will be posted within the App or on this page. Your continued use of the App after such changes constitutes your acceptance of the revised terms.

10. Termination

We may terminate or suspend your access to the App at any time, without prior notice, for conduct that we believe violates these terms or is harmful to other users or us.

11. Governing Law

These terms shall be governed by and construed in accordance with applicable laws, without regard to conflict-of-law principles.

12. Contact

If you have any questions about these terms, contact us at hello@cs42.org.

Last updated: July 19, 2026

Support

Need help with Sukoon?

If you encounter any issues, have suggestions for new sounds or features, or just want to say hello, reach out to us:

Email: hello@cs42.org
Web: Try Sukoon on the web

We typically respond within 48 hours.

Sukoon