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Cookie Policy

Effective Date: 1 April 2026 Last Updated: 1 April 2026

This Cookie Policy explains how GTMSAI Ltd (trading as Pebbles Ai) uses cookies and similar tracking technologies on our website (www.trypebbles.ai) and application (app.trypebbles.ai). It should be read alongside our Privacy Policy.


1. What Are Cookies

Cookies are small text files that are stored on your device (computer, tablet, or mobile phone) when you visit a website. They are widely used to make websites work efficiently, to remember your preferences, and to provide information to the website owner.

Cookies may be "first-party" (set by the website you are visiting) or "third-party" (set by a service other than the website you are visiting). Cookies may also be "session" cookies (deleted when you close your browser) or "persistent" cookies (remaining on your device for a set period or until you delete them).

Similar technologies — such as web beacons, pixels, and local storage — may also be used for the same purposes. References to "cookies" in this policy include these similar technologies.


2. How We Use Cookies

We use cookies for the following purposes:

  • Essential operation — To ensure the Service functions correctly, maintain security, and protect against bots and abuse
  • Analytics and performance — To understand how visitors use our website and application, identify areas for improvement, and measure the effectiveness of our features
  • Marketing and attribution — To track the effectiveness of our marketing campaigns, attribute leads to their source, and deliver relevant content
  • Functionality — To support integrations and features that enhance your experience

3. Cookies We Use

The table below lists the cookies used on our website and application.

Essential Cookies

These cookies are necessary for the Service to function and cannot be disabled without affecting core functionality.

Cookie Name Provider Purpose Duration First-party / Third-party
__cf_bm Cloudflare Bot management and protection. Distinguishes between humans and bots to protect the Service from malicious traffic. 30 minutes Third-party
pebbles_session Pebbles Ai Maintains your authenticated session while you use the application. Session First-party

Analytics Cookies

These cookies help us understand how visitors interact with the Service by collecting and reporting information.

Cookie Name Provider Purpose Duration First-party / Third-party
_ga Google Analytics Distinguishes unique users by assigning a randomly generated identifier. Used to calculate visitor, session, and campaign data for site analytics reports. 2 years Third-party
_gid Google Analytics Distinguishes unique users. Used to store and count page views. 24 hours Third-party
_clck Microsoft Clarity Persists the Clarity user identifier and preferences. Used to associate page views and actions with a single user for heatmap and session replay analysis. 1 year Third-party
_clsk Microsoft Clarity Connects multiple page views by a user into a single Clarity session recording. Used for session replay and heatmap generation. 1 day Third-party

Marketing Cookies

These cookies are used to track marketing campaign effectiveness and attribute leads to their source.

Cookie Name Provider Purpose Duration First-party / Third-party
__hssc HubSpot Tracks the current session. Used to determine whether HubSpot should increment the session number and timestamps in the __hstc cookie. 30 minutes Third-party
__hssrc HubSpot Determines whether the visitor has restarted their browser. Used to calculate the duration of a session. Session Third-party
__hstc HubSpot Tracks a visitor's identity. Contains the domain, initial timestamp (first visit), last timestamp (last visit), current timestamp (this visit), and session number. 6 months Third-party
hubspotutk HubSpot Tracks a visitor's identity. This cookie is passed to HubSpot on form submission and used when de-duplicating contacts. Contains an opaque GUID to represent the current visitor. 6 months Third-party
utm_source HubSpot Stores the UTM source parameter from the URL that brought the visitor to the site. Used for lead attribution and campaign reporting. Session First-party
utm_medium HubSpot Stores the UTM medium parameter from the URL that brought the visitor to the site. Used for lead attribution and campaign reporting. Session First-party
utm_campaign HubSpot Stores the UTM campaign parameter from the URL that brought the visitor to the site. Used for lead attribution and campaign reporting. Session First-party

Functional Cookies

These cookies support additional features and integrations.

Cookie Name Provider Purpose Duration First-party / Third-party
slack_session_id Slack Supports internal Slack integrations used by the Pebbles Ai platform. Session Third-party

4. How to Manage Cookies

When you first visit our website, a cookie consent banner will appear allowing you to accept or reject cookies by category. Non-essential cookies (analytics, marketing, and functional) are not set until you have made your choice. You can change your preferences at any time via the 'Cookie Preferences' link in the website footer.

You have the right to decide whether to accept or reject non-essential cookies.

Browser Settings

Most web browsers allow you to control cookies through their settings. You can typically find these in the "Settings", "Preferences", or "Privacy" section of your browser. Common browsers provide the following guidance:

You can opt out of specific analytics and tracking services directly:

Do Not Track

Some browsers offer a "Do Not Track" (DNT) signal. We currently do not respond to DNT signals, but you can use the cookie management options described above to control tracking.

We honour Global Privacy Control (GPC) signals as opt-out preference signals where required by applicable law, including for California residents under the California Privacy Rights Act.


5. Impact of Disabling Cookies

If you choose to disable or reject certain cookies, some parts of the Service may not function as intended:

  • Disabling essential cookies will prevent you from logging in and using the application
  • Disabling analytics cookies will not affect your use of the Service, but will limit our ability to understand and improve the user experience
  • Disabling marketing cookies will not affect your use of the Service, but may result in less relevant communications from us
  • Disabling functional cookies may limit the availability of certain integrations and features

6. Third-Party Cookies

Some cookies on our site are set by third-party services. We do not control how these third parties use their cookies. For more information about their data practices, please refer to their respective privacy policies:


We may update this Cookie Policy from time to time to reflect changes in our use of cookies or for legal, operational, or regulatory reasons. When we make changes, we will update the "Last Updated" date at the top of this page.

We review our cookie inventory at least annually and after any significant changes to the technologies used on our website, to ensure this policy remains accurate.

We encourage you to review this policy periodically.


8. Contact

If you have any questions about our use of cookies or this Cookie Policy, please contact:

Data Protection Officer: data@trypebbles.ai

Postal address: GTMSAI Ltd 82 Wandsworth Bridge Road London, SW6 2TF United Kingdom