Cookie Policy
Last updated: July 6, 2026
Contents
1. Introduction
This Cookie Policy explains how ADHD Harmony B.V. ("ADHD Harmony,""we," "us," or "our") uses cookies and similar technologies (including browser local storage) on our website at adhdharmony.com and our application at app.adhdharmony.com (collectively, the "Service"). This policy provides information about what cookies are, what types we use, and how you can manage them.
This Cookie Policy should be read together with our Privacy Policy and Terms of Service.
2. What Are Cookies?
Cookies are small text files that are placed on your device (computer, smartphone, or tablet) when you visit a website. They are widely used to make websites work efficiently, provide a better user experience, and provide information to website owners. We also use browser local storage, which works similarly but stays on your device and is not sent with every request.
Types of Cookies by Duration
- Session Cookies: Temporary cookies that expire when you close your browser. These are essential for features like keeping you logged in during your session.
- Persistent Cookies: Remain on your device for a set period or until you delete them. These remember your preferences for future visits.
Types of Cookies by Origin
- First-party Cookies: Set by our website directly
- Third-party Cookies: Set by external services we use (e.g., analytics or security)
3. Cookies and Storage We Use
We use a minimal set of cookies and local storage to provide our Service. We do NOT use advertising or marketing cookies anywhere on our Service.
3.1 Essential Cookies (Strictly Necessary)
These cookies are necessary for the Service to function properly. They cannot be disabled. Without these cookies, services you have asked for cannot be provided.
| Cookie Name | Provider | Purpose | Duration |
|---|---|---|---|
sb-*-auth-token | Supabase (First-party) | Authentication token to keep you logged in securely. Contains encrypted session data. | 7 days (refreshed on activity) |
sb-*-auth-token-code-verifier | Supabase (First-party) | Security token for OAuth authentication flow (PKCE) | Session |
cf_* (Turnstile) | Cloudflare | Bot protection during signup to prevent automated abuse | Session / short-lived |
Legal Basis: These cookies are necessary for the performance of our contract with you (providing the Service you signed up for) and for securing the Service. They do not require consent under GDPR/ePrivacy rules as they are strictly necessary.
3.2 Analytics
We use privacy-friendly analytics to understand how visitors use our Service, allowing us to improve functionality and user experience.
| Name | Provider | Purpose | Duration |
|---|---|---|---|
| Vercel Analytics | Vercel | Collects anonymous usage data including page views, session duration, and navigation patterns. No cross-site tracking; no personally identifiable information is collected. | Anonymized, aggregate |
Consent: On our public pages we show a consent banner and only enable analytics after you accept. Your choice is stored in your browser (see Section 3.3). Within the logged-in application, anonymized analytics run on the basis of our legitimate interest in maintaining and improving the Service; no advertising identifiers are used.
3.3 Functional Storage (Local Storage)
These items enable enhanced functionality and remember your preferences. They stay on your device.
| Name | Provider | Purpose | Duration |
|---|---|---|---|
theme | First-party | Stores your light/dark theme preference | Until deleted |
harmony_analytics_consent | First-party | Remembers whether you accepted or declined analytics on our public pages | Until deleted |
What We Don't Use
- No advertising or marketing cookies: we do not use advertising pixels or marketing trackers anywhere on our Service
- No cross-site tracking: we do not track your activity on other websites
- No sale of data: we never sell data collected through cookies or similar technologies
4. Third-Party Services
Our Service uses minimal third-party services that may set their own cookies or use similar technologies:
4.1 Vercel Analytics
We use Vercel Analytics to understand how visitors use our site. Vercel Analytics is privacy-focused and:
- Does not use cookies for tracking individual users
- Collects only anonymized, aggregate data
- Does not share data with third parties
- Is GDPR compliant
For more information, see Vercel's Privacy Policy.
4.2 Supabase
Supabase powers our authentication system. Their cookies are strictly necessary for login functionality.
For more information, see Supabase's Privacy Policy.
4.3 Cloudflare Turnstile
We use Cloudflare Turnstile on our signup page to protect against bots and automated abuse. Turnstile may use cookies or similar technologies strictly for security verification. For more information, see Cloudflare's Privacy Policy.
4.4 LiveKit (Body Doubling Feature)
When you use our body doubling feature with voice/video, LiveKit may use temporary session data to facilitate real-time communication. This data is not stored after your session ends.
5. Managing Your Cookie Preferences
5.1 Our Consent Banner
On our public pages, we ask for your consent before enabling analytics. You can decline with one click, and we remember your choice. To change your choice later, clear your browser's local storage for our site (or clear site data), and the banner will appear again.
5.2 Browser Settings
Most browsers allow you to control cookies through their settings. You can:
- View what cookies are stored
- Delete cookies individually or entirely
- Block third-party cookies
- Block all cookies
- Set preferences for specific websites
Browser-Specific Instructions:
5.3 Opting Out of Analytics
You can decline analytics via our consent banner on public pages. Vercel Analytics also respects browser-level privacy settings. If you enable "Do Not Track" in your browser or use privacy-focused browsers, analytics data will not be collected.
6. Consequences of Disabling Cookies
If you choose to disable cookies, please note that:
- Essential cookies cannot be disabled. They are required for the Service to function. Blocking them will prevent you from logging in.
- Disabling functional storage: Your theme preference and consent choice may not be remembered between sessions.
- Declining analytics: This won't affect your experience, but it helps us improve the Service.
7. Do Not Track
Some browsers offer a "Do Not Track" (DNT) setting. Our Service respects this setting:
- If DNT is enabled, Vercel Analytics will not collect usage data
- Essential cookies (authentication) will still function as they are necessary for the Service
8. Changes to This Cookie Policy
We may update this Cookie Policy from time to time to reflect changes in:
- The cookies we use
- Legal requirements
- Our business practices
We will notify you of significant changes by posting a notice on our Service. The "Last updated" date at the top indicates when the policy was last revised.
9. Contact Us
If you have questions about our use of cookies or this Cookie Policy, please contact us:
10. More Information About Cookies
For more general information about cookies, you can visit:
By using Harmony AI, you acknowledge that you have read and understood this Cookie Policy.