-Privacy Policy-
 Coaching Metronome

Last updated: May 31, 2026

​

This Privacy Policy explains how Coaching Metronome (the “Extension”) collects, uses, and protects information when you use the Extension in Google Chrome.

By installing or using the Extension, you agree to the collection and use of information in accordance with this Privacy Policy.

​

1. Who we are

Coaching Metronome is a browser extension designed to provide guided breathing and focus sessions. It is developed and operated by an individual developer (“we”, “us”, or “our”). You can contact us at:

​

Email: david.harts.breakthrough@gmail.com

​

2. Information we collect

​

2.1 Information you provide

​

When you use the Extension, you may provide:

• Email address

  • Collected when you:

    • Purchase a license for the Extension

    • Unlock the Extension using a license code

    • Contact support or request help with license recovery

• License code

  • Collected when you unlock the Extension with a purchased license code.

​

2.2 Information stored locally in your browser

​

The Extension stores some data locally in your browser using Chrome’s storage:

• Unlock status (whether your copy is licensed)

• Your licensed email and license code (for keeping the Extension unlocked)

• Some user preferences, such as:

  • Visual and animation settings

  • Session duration settings

  • Resolution and layout preferences

  • Notes or configuration related to the Extension’s UI

This data is stored only on your device and is not automatically sent to our servers.

​

2.3 Information we do not collect

​

The Extension does not:

• Collect your breathing data, usage analytics, or detailed behavior tracking for advertising

• Track your browsing history

• Read or modify the content of websites you visit (other than what is necessary for the Extension to display its own UI)

We do not intentionally collect any sensitive categories of data (such as health data, financial information, or government IDs).

​

3. How we use your information

​

We use your information only for the purposes below:

• License verification and unlocking

  • To verify that a license code is valid and associated with the email you provide

  • To keep the Extension unlocked on your device

• Payment and purchase-related communication

  • To send you your license code after purchase

  • To help you recover or re-send your license if you contact support

• Support and communication

  • To respond when you email us for help or feedback

  • To understand and fix issues you report

We do not use your information for targeted advertising, profiling, or selling your data.

​

4. Where and how your data is stored

​

4.1 On your device

​

The following is stored locally in your browser via Chrome’s storage:

• Unlock status

• Licensed email and license code

• Visual, resolution, and session preference settings

• Any notes or configuration stored by the Extension

You can clear this data at any time by:

• Removing the Extension from Chrome, and/or

• Clearing extension data via Chrome’s settings.

​

4.2 On our backend services

​

To support licensing and payments, we may store some information in backend services such as:

• Supabase or a similar database service

  • Your email address

  • Your license code

  • License status (active, revoked, etc.)

  • Basic metadata needed to detect duplicate or fraudulent licenses

• Payment processor (e.g., Stripe)

  • Email and basic purchase details required to process payment

  • We do not see or store your full credit card number. Payment information is handled by the payment processor.

• Email communication

  • If you email us directly, your message and address are stored in our email account (e.g., Gmail).

We use reputable third-party providers that apply standard security practices to help protect your data.

​

5. How we share your information

​

We do not sell or rent your personal information. We may share your information only in these limited ways:

• Service providers

  • Payment processors (for example, Stripe) to process your purchase

  • Backend/database hosting providers (for example, Supabase) to store licenses

  • Email providers (for example, Gmail) to send and receive support emails

These providers are only allowed to use your information to operate the services we rely on (for example, sending your license or processing payments).

• Legal requirements

  • We may disclose information if required to do so by law or in response to valid legal requests.

We do not:

• Share data with advertisers or data brokers

• Use your data to build advertising profiles

• Transfer your data for creditworthiness or lending decisions

​

6. Data security

​

We take reasonable steps to help protect your information, including:

• Using well-known providers for payments, storage, and email

• Limiting stored data to what is necessary for licensing and support

• Avoiding storage of payment card details on our own systems

However, no method of transmission or storage is 100% secure. You use the Extension and provide information at your own risk.

​

7. Data retention

​

We keep your information only as long as needed for:

• Maintaining valid licenses

• Providing support

• Meeting legal or accounting obligations

If you ask us to delete your information and we have no legal requirement to keep it, we will delete or anonymize it within a reasonable time.

​

8. Your choices and rights

​

Depending on your location, you may have the right to:

• Access the personal information we hold about you

• Correct inaccurate or incomplete information

• Request deletion of your personal information

• Object to or restrict certain processing

You can also:

• Clear local extension data by removing the Extension or clearing extension data in Chrome

• Contact us by email to ask about, update, or delete your data

• ​

To exercise any of these rights, email us at:

Email: david.harts.breakthrough@gmail.com

​

Please contact us from the same email address you used to purchase or register the Extension, so we can verify ownership.

​

9. Children’s privacy

The Extension is not intended for children under 13. We do not knowingly collect personal information from children under 13. If you believe a child has provided us with personal information, contact us so we can delete it.

​

10. Changes to this Privacy Policy

We may update this Privacy Policy from time to time. When we do, we will update the “Last updated” date at the top of this page.
Continued use of the Extension after any changes means you accept the updated policy.

​

11. Contact

If you have any questions about this Privacy Policy or how your information is handled, contact:

​

Email: david.harts.breakthrough@gmail.com