Deep Breath
Deep Breath app icon

Deep Breath

Breathwork training for divers and freedivers. Train your breath — under pressure.

Five breathing modes, static apnea training, equalization drills, and mammalian-dive-reflex conditioning, all practised on dry land. Designed to build the breathing discipline that certifications assume you already have. Your data stays on your device — no accounts, no servers, no tracking.

Download on the App Store
What's inside

Built for divers. Practised on land.

Deep Breath is a self-guided breathwork tool. It doesn't replace certified instruction — it gives you a place to train the breathing discipline that certifications assume you already have.

Five breathing modes

Box Breath, CO₂ Table, O₂ Table, Air Save, and Breath-Up — each with timed guidance and an animated breathing circle.

Static apnea training

Configurable breath-hold intervals and round counts with personal-best tracking, all practised on dry land.

Equalization techniques

Written instruction and practice drills for the Valsalva, Frenzel, and Mouthfill techniques.

MDR conditioning

Three progressive levels of mammalian-dive-reflex drills using vagal breathing and breath-holds.

Pre-dive routine builder

Sequence warm-up, breathing, visualization, and final-preparation stages into a routine that's yours.

Quiz mode

Optional in-session questions test whether you can hold focus and breathing pattern under cognitive load.

On-device estimates

Optional profile (age, gender, height, weight) drives Baldwin-Equation vital-capacity and gas-consumption estimates — never leaves the device.

Session history & streaks

All session records persist on-device. Maintain a streak to unlock the aquarium creature companions.

Important safety information

Read this before you train.

Deep Breath includes breathwork techniques used by freedivers and scuba divers. These practices carry real risks when done incorrectly. Before using the App you must affirmatively acknowledge the four statements below. They are reproduced here verbatim from the in-app safety screen and from Section 14.6 of the Terms of Service, where they are contractually binding.

  1. Never practice breath-holds alone in or near water.

    Shallow water blackout can cause loss of consciousness without warning and is a leading cause of death in freediving. You will never practice breath-holds alone in or near water, including pools, bathtubs, or open water. A trained buddy must always be present.

  2. The App is not a substitute for certified instruction.

    Deep Breath provides breathwork exercises for general practice. It does not replace certified freediving or scuba instruction. For in-water breath-hold training, you will seek qualified instruction from a recognized agency.

  3. Consult a physician if you have relevant medical conditions.

    You will consult a physician before starting breathwork if you have any of the conditions described in Section 14.4, including cardiovascular disease, respiratory conditions, pregnancy, history of seizures, panic disorder, or any condition affected by changes in breathing or oxygen levels.

  4. Use at your own risk.

    You use the App at your own risk. Deep Breath, James Montgomery Design Inc., and its operators are not liable for injury, illness, or death arising from your use of the App. You understand that breathwork can induce dizziness, lightheadedness, fainting, or loss of consciousness, and you will practice only in a safe seated or lying position away from water, heights, or hazards.

Terms of Service

The full agreement.

The full Terms of Service are reproduced below. They include the four binding safety acknowledgments above (Section 14), a limitation of liability (Section 15), an indemnity (Section 16), and a mandatory arbitration clause with a 30-day opt-out (Section 18).

Terms of Service — Deep Breath

Effective Date: May 5, 2026 Last Updated: May 5, 2026

These Terms of Service ("Terms") govern your use of the Deep Breath mobile application for iOS (the "App"). Please read them carefully. Section 14 (Health and Safety Disclaimers), Section 15 (Limitation of Liability), and Section 18 (Dispute Resolution) contain important provisions that affect your legal rights, including a binding arbitration clause and a class action waiver.

1. Introduction and Acceptance

1.1 The parties. These Terms form a legally binding agreement between you and James Montgomery Design Inc., a corporation incorporated under the laws of the Province of British Columbia, Canada, operating as Satellite Design Studio ("Company," "we," "us," or "our").

1.2 The Service. These Terms govern your download, installation, and use of the Deep Breath mobile application for iOS, including all updates, features, content, and documentation provided with it (collectively, the "App" or the "Service").

1.3 Acceptance by use. By downloading, installing, or using the App, or by tapping "I Understand and Agree" on the in-app safety acknowledgment screen, you confirm that you have read, understood, and agree to be bound by these Terms; that you have read and agree to our Privacy Policy; and that you acknowledge the Apple Licensed Application End User License Agreement (the "Apple EULA") also applies to your use of the App.

1.4 The agreement. Your agreement with us consists of (i) these Terms, (ii) our Privacy Policy, and (iii) the Apple EULA, which together constitute the entire agreement between you and the Company regarding the App.

1.5 If you do not agree. If you do not agree to these Terms, you must not download, install, or use the App.

1.6 Contact. James Montgomery Design Inc. (operating as Satellite Design Studio). Legal notices and general support: hello@jamesmontgomerydesign.com

2. Definitions

In these Terms:

  • "App" or "Service" means the Deep Breath mobile application for iOS, including all updates, features, and content provided with it.
  • "Apple" means Apple Inc. and its subsidiaries.
  • "Apple EULA" means the Licensed Application End User License Agreement made available by Apple for apps distributed through the App Store.
  • "Company," "we," "us," and "our" mean James Montgomery Design Inc.
  • "Content" means text, images, graphics, audio, video, logos, design, software, and all other materials made available in or through the App.
  • "Device" means the Apple iOS-compatible device on which you install the App.
  • "Terms" means these Terms of Service, as amended from time to time in accordance with Section 20.
  • "User," "you," and "your" mean the natural person using the App.

3. Eligibility

3.1 Minimum age. The App is intended for users who are at least 16 years of age. By using the App, you represent that you are at least 16 years old. If you are under the age of majority in your jurisdiction, you must have parental consent.

3.2 Legal capacity. You represent that you have the full legal capacity to enter into a binding contract in your jurisdiction.

3.3 Compliance with local laws. You are responsible for complying with all laws applicable to your use of the App.

3.4 Medical suitability. Before using the App, you will consult a qualified physician if you have any condition listed in Section 14.4.

4. Description of the App

4.1 What the App is. Deep Breath is a mobile application that provides self-guided breathwork exercises and educational content. Its features include breathing modes (Box Breath, CO₂ Table, O₂ Table, Air Save, Breath-Up), static apnea training, pre-dive routine builder, equalization training, MDR conditioning, advanced training, quiz overlay, session history, aquarium reward system, live breath amplitude measurement, and audio/haptic feedback.

4.2 Target audience. The App is designed for use by adult breathwork practitioners, including scuba divers and freedivers, for on-land training and preparation.

4.3 What the App is not. The App is not a medical device, not a substitute for certified instruction, not a replacement for in-water supervision by a qualified buddy, not a substitute for consultation with a qualified physician, and not endorsed by any medical, diving, or regulatory body.

5. User Accounts

5.1 No accounts. The App does not require you to create an account. All information you enter is stored locally on your Device.

5.2 Your Device. You are responsible for the security of your Device.

6. Purchase, Payment, and Refunds

6.1 One-time purchase. The App is a one-time paid purchase through the Apple App Store. The App is not a subscription, and there are no recurring charges.

6.2 Price. The price of the App is the amount shown on the App Store at the time of your purchase.

6.3 Payment. All payment processing is handled by Apple.

6.4 Refunds. All refund requests are handled by Apple in accordance with Apple's then-current refund policies.

6.5 No in-app purchases. The App does not currently offer any in-app purchases.

7. License Grant and Restrictions

7.1 License. Subject to your compliance with these Terms, the Company grants you a limited, non-exclusive, non-transferable, non-sublicensable, revocable license to install and use the App on an Apple-branded Device that you own or control, for your personal, non-commercial use.

7.2 Perpetual for the purchased version. Your license to the version of the App you purchased is perpetual, subject to your continued compliance with these Terms.

7.3 Restrictions. You will not copy, modify, reverse engineer, rent, lease, sublicense, or distribute the App; remove proprietary notices; circumvent security features; or use the App to develop or train any AI/ML model or competing product.

7.4 Apple EULA. The Apple EULA is incorporated by reference.

7.5 Reservation of rights. All rights not expressly granted are reserved.

8. Updates to the App

From time to time, the Company may release updates. Updates are distributed through the Apple App Store. We do not guarantee that the App will continue to function on all iOS versions indefinitely.

9. User Content

9.1 Device-local data. The App does not upload or transmit your information to the Company's servers. Any data you enter is stored on your Device.

9.2 No user uploads. The App does not allow you to upload content to the Company or to other users.

9.3 Your responsibility for your data. You are solely responsible for the accuracy of any information you enter into the App and for maintaining backups.

9.4 Feedback. If you send us feedback, you grant the Company a worldwide, royalty-free, perpetual, irrevocable license to use that feedback for any purpose.

10. Acceptable Use

You will not use the App to violate any applicable law; attempt to gain unauthorized access; interfere with the integrity of the App; distribute malware; impersonate any person; or use the App in any way that could facilitate unsafe breath-hold practices.

11. Intellectual Property

11.1 Ownership. The App, all Content, and all associated intellectual property rights are owned by the Company or its licensors.

11.2 Trademarks. "Deep Breath," "James Montgomery Design," "Satellite Design Studio," and associated logos and marks are trademarks of the Company.

11.3 No implied licenses. Except for the limited license in Section 7.1, nothing in these Terms grants you any rights.

12. Third-Party Services

12.1 Apple platform. The App is distributed through the Apple App Store and runs on Apple's iOS operating system.

12.2 No third-party SDKs. The App does not incorporate third-party analytics, advertising, crash-reporting, or tracking SDKs.

12.3 External links. The App may include links that open external websites in your system browser.

13. Privacy

13.1 Privacy Policy. Our handling of information is described in our Privacy Policy below.

13.2 Device-local design. The microphone input used for live breath-amplitude measurement is analyzed in real time on your Device and is not recorded, retained, or transmitted.

14. Health and Safety Disclaimers

READ THIS SECTION CAREFULLY. YOUR USE OF THE APP IS CONDITIONAL ON YOUR ACCEPTANCE OF THE DISCLAIMERS AND ACKNOWLEDGMENTS IN THIS SECTION.

14.1 "AS IS" and "AS AVAILABLE". THE APP AND ALL CONTENT ARE PROVIDED "AS IS" AND "AS AVAILABLE," WITHOUT WARRANTY OF ANY KIND.

14.2 Health and wellness disclaimer. The App provides breathwork exercises for wellness and self-practice purposes only. The App does not provide medical advice, diagnosis, or treatment.

14.3 Breath-hold and diving disclaimer. Breath-hold practices carry serious and potentially fatal risks, including shallow water blackout, hypoxic blackout, hyperventilation-induced syncope, cardiac events, loss of consciousness, brain injury, and death.

14.4 Medical conditions. You must consult a qualified physician before using the App if you have any of the following:

  • cardiovascular disease, arrhythmia, hypertension, or history of heart attack or stroke;
  • respiratory disease, asthma, COPD, or other pulmonary condition;
  • pregnancy;
  • history of seizures, epilepsy, or fainting;
  • panic disorder, anxiety disorder, or post-traumatic stress disorder;
  • ear, nose, throat, or sinus conditions that could be affected by equalization;
  • any condition for which you have been advised to avoid breath-holding.

14.5 Physical environment. You agree to use the App only in a safe, stable seated or lying position, and never while in or near water, at height, driving, operating machinery, or in any environment where loss of consciousness could cause injury.

14.6 Binding safety acknowledgments. Before first use, the App requires you to affirmatively acknowledge four safety statements which are incorporated into these Terms.

14.7 Assumption of risk. You knowingly and voluntarily assume all such risks arising from your use of the App.

15. Limitation of Liability

15.1 Exclusion of indirect damages. IN NO EVENT WILL THE COMPANY BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, PUNITIVE, OR EXEMPLARY DAMAGES.

15.2 Exclusion of liability for personal injury. THE COMPANY WILL NOT BE LIABLE FOR ANY PERSONAL INJURY, ILLNESS, DISABILITY, EMOTIONAL DISTRESS, OR DEATH ARISING FROM YOUR PRACTICE OF BREATHWORK.

15.3 Aggregate cap. THE AGGREGATE LIABILITY OF THE COMPANY WILL NOT EXCEED THE GREATER OF: (A) THE AMOUNT YOU ACTUALLY PAID TO APPLE FOR THE APP; OR (B) ONE HUNDRED CANADIAN DOLLARS (CAD $100).

15.4 Basis of the bargain. The disclaimers and limitations are a fundamental basis of the bargain.

15.5 Failure of essential purpose. The limitations apply even if any limited remedy fails of its essential purpose.

15.6 Jurisdictional exceptions. Some jurisdictions do not allow the exclusion of certain warranties or damages.

16. Indemnification

You agree to defend, indemnify, and hold harmless the Company from any claims arising out of your breach of these Terms, your use of the App, your violation of any law, your practice of breathwork, any injury sustained, or your reliance on the App for any medical or training decision.

17. Termination

You may terminate by uninstalling the App. We may suspend or terminate your license at any time. Upon termination, your right to use the App ends immediately.

18. Dispute Resolution

PLEASE READ THIS SECTION CAREFULLY. IT REQUIRES DISPUTES TO BE RESOLVED BY INDIVIDUAL, BINDING ARBITRATION AND CONTAINS A CLASS ACTION WAIVER. YOU MAY OPT OUT UNDER SECTION 18.7.

18.1 Informal resolution. Before initiating any formal dispute-resolution procedure, the parties agree to attempt to resolve any dispute through informal negotiation for thirty (30) days.

18.2 Binding arbitration. If the Dispute is not resolved informally, the Dispute will be resolved by final and binding arbitration.

18.3 Arbitration body and rules. Arbitration will be administered by the ADR Institute of Canada, Inc. (ADRIC).

18.4 Seat, language, and arbitrator. The seat of arbitration will be Vancouver, British Columbia, Canada.

18.5 Small claims exception. Either party may bring an individual claim in any small claims court with jurisdiction.

18.6 Class action waiver. ANY DISPUTE WILL BE BROUGHT IN THE PARTIES' INDIVIDUAL CAPACITY AND NOT AS A PLAINTIFF OR CLASS MEMBER.

18.7 Opt-out. You may opt out of the arbitration provisions by sending written notice to hello@jamesmontgomerydesign.com within thirty (30) days of first acceptance.

18.8 Confidentiality. The parties will keep arbitration proceedings confidential.

18.9 Time limit. Any Dispute must be commenced within one (1) year after the cause of action arose.

19. Governing Law and Jurisdiction

These Terms are governed by the laws of the Province of British Columbia and the federal laws of Canada. The exclusive jurisdiction is the courts of Vancouver, British Columbia, Canada.

20. Changes to These Terms

We may modify these Terms from time to time. Your continued use of the App after the effective date of any change constitutes your acceptance.

21. Apple-Specific Terms

This Section applies solely to the extent you obtained the App through the Apple App Store. These Terms are between you and the Company only, not Apple. The Company is solely responsible for the App.

22. General Provisions

Entire agreement, severability, no waiver, assignment, force majeure, notices, headings, and language clauses apply.

23. Contact Information

James Montgomery Design Inc. (operating as Satellite Design Studio). Legal and general support: hello@jamesmontgomerydesign.com

© James Montgomery Design Inc. All rights reserved.

Privacy Policy

Nothing leaves your device.

The App stores everything you enter on your device. We do not run a backend, do not collect analytics, and do not include any third-party tracking. The full Privacy Policy is below.

Privacy Policy — Deep Breath

Effective Date: May 5, 2026 Last Updated: May 5, 2026

This Privacy Policy describes how James Montgomery Design Inc. (operating as Satellite Design Studio) handles information in connection with the Deep Breath mobile application for iOS (the "App").

We have designed the App so that your information stays on your device. We do not run a backend server, we do not use analytics, and we do not transmit your usage data.

1. Summary

  • We do not operate a backend server.
  • We do not collect analytics, telemetry, crash reports, or behavioural data.
  • We do not use third-party advertising, tracking, or marketing SDKs.
  • The microphone is used only to measure live breath amplitude on your device. No audio is recorded, retained, or transmitted.
  • The App's only outbound network call is opening this website in your system browser.
  • Apple receives standard purchase metadata when you buy the App.

2. Scope

This Privacy Policy applies to your use of the Deep Breath mobile application for iOS. It does not apply to third-party services, future websites, or information you share with us directly.

3. Information You Enter Into the App

The App does not require an account. If you choose to use optional features, you may enter:

  • Profile information — name, age, gender, height, and weight, used only for on-device estimates of vital capacity and gas consumption.
  • Session settings — your preferred breathing modes, timer durations, sound preferences.
  • Session history — records of breathing exercises you complete.
  • Streak and progress data — your training streak and unlocked aquarium creatures.

All of the above is stored locally on your device. None of it is transmitted to us or to any third party.

4. Microphone

The App uses your device's microphone to measure live breath amplitude. The audio buffer is processed in real time on your device and discarded immediately. We do not record, save, store, or transmit any audio. Microphone access can be revoked at any time in Settings → Privacy & Security → Microphone.

5. Information We Collect

We do not operate a server. We therefore do not collect: usage analytics, crash reports, device identifiers, IP addresses, location data, contacts, photos, audio recordings, HealthKit data, or iCloud data.

6. Network Activity

The App makes one type of outbound network call: when you tap a legal-links button, iOS opens this website in your system browser. We do not run analytics on this website.

7. Apple App Store

When you purchase or download the App through the Apple App Store, Apple receives the information necessary to process the transaction. That information is governed by Apple's Privacy Policy.

8. Children's Privacy

The App is intended for users 16 years of age or older. Because the App does not collect or transmit information to us at all, we do not maintain databases of user information of any age.

9. Your Choices and How to Delete Your Data

Because all data is local to your device, you control it directly. To remove all data, delete the App from your device.

10. Security

Because no data is transmitted to us, there is no server-side data of yours to secure. On-device data is protected by the security of your iOS device.

11. International Users

The App may be downloaded from anywhere the Apple App Store operates. Because we do not collect or transmit your information, no cross-border transfer takes place.

12. Third-Party Services

The App does not incorporate any third-party SDKs, analytics services, advertising networks, attribution providers, or social-media integrations.

13. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. Your continued use of the App after a revised policy takes effect constitutes your acceptance.

14. Contact

James Montgomery Design Inc. (operating as Satellite Design Studio). Privacy and legal: hello@jamesmontgomerydesign.com

© James Montgomery Design Inc. All rights reserved.