Cookie Policy

Effective Date: March 6, 2026

Last Updated: March 7, 2026

Harmonize LLC ("Harmonize," "we," "us," or "our") uses cookies and similar tracking technologies on the Harmonize platform. This Cookie Policy explains what cookies and related technologies are, how we use them, and how you can manage your preferences.

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1. What Are Cookies?

Cookies are small text files stored on your device when you visit a website. They help websites remember your preferences, understand how you use the site, and improve your experience.

In addition to cookies, we use related technologies including:

• Local storage and session storage — Browser-based storage mechanisms that retain data on your device
• IndexedDB — A browser database used for storing structured data such as authentication tokens
• Tracking pixels and similar technologies — Small code snippets used to collect usage information

Throughout this policy, "cookies" refers to all of these technologies unless otherwise specified.

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2. Cookies and Technologies We Use

Essential (Cannot Be Disabled)

These cookies and technologies are necessary for the Service to function.

Cookie / Technology	Provider	Purpose	Storage Type	Duration
Authentication tokens	Firebase	Keep you signed in, verify session	IndexedDB / localStorage	Persistent (until logout)
App Check tokens	Firebase / ReCaptcha V3	Verify legitimate traffic, prevent abuse	sessionStorage	Auto-refreshed
Cookie consent	Harmonize	Remember banner dismissal	localStorage	Persistent
Security cookies	Stripe	Fraud prevention during payment processing	Cookie	Session

Analytics

These cookies help us understand how users interact with the Service so we can improve it.

Cookie / Technology	Provider	Purpose	Storage Type	Duration
Product analytics	PostHog	Feature usage, page views, user journeys	localStorage	Persistent

• PostHog is configured with person_profiles: 'always' — stores profiles for all users
• PostHog data is processed in the United States
• Analytics cookies can be managed via browser settings (see Section 5)

Error Monitoring and Session Replay

Cookie / Technology	Provider	Purpose	Storage Type	Duration
Error monitoring	Sentry	Capture error reports, performance data, device/browser info	sessionStorage	Session
Session replays	Sentry	Record anonymized screen recordings for debugging	sessionStorage + cloud	90 days (Sentry retention)

• Sentry session replays capture user interactions to help diagnose errors
• Replays are stored in Sentry's cloud infrastructure (United States)
• Text content is not masked in replays; media content is not blocked
• See our Privacy Policy for more on session replay data

Marketing (Future)

We may use marketing cookies and tracking technologies — such as tracking pixels, conversion APIs, and retargeting tags — to measure advertising campaign performance and reach prospective users. These tools may share anonymized or pseudonymized data with advertising platforms.

Marketing cookies will require your consent and can be managed through browser settings or opt-out mechanisms provided at that time.

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3. Local Storage and Similar Technologies

In addition to cookies, we use browser local storage and session storage:

• Authentication state — Firebase stores auth tokens in IndexedDB to maintain your session
• User preferences — Interface settings and preferences stored in localStorage
• Session data — Temporary data stored in sessionStorage, cleared when you close your browser

These technologies function similarly to cookies but are not transmitted with every request to our servers.

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4. Third-Party Cookies

Some cookies are set by third-party services integrated into the platform. We do not control these cookies. Third-party providers include:

Provider	Purpose	Privacy Policy
Stripe	Payment processing, fraud prevention	Stripe Privacy Policy
Google (ReCaptcha V3)	Bot detection, abuse prevention	Google Privacy Policy
PostHog	Product analytics	PostHog Privacy Policy
Sentry	Error monitoring, session replays	Sentry Privacy Policy
Vercel	Website hosting and performance	Vercel Privacy Policy

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5. Managing Your Cookie Preferences

• Disclosure Banner: When you first visit our website, a banner informs you about our use of cookies. Click "Got it" to dismiss
• Browser Settings: Most browsers allow you to block or delete cookies through their settings. Note that blocking essential cookies may prevent the Service from functioning properly

Note: Essential cookies and technologies (authentication, security) cannot be disabled as they are required for the Service to function.

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6. Changes to This Policy

We may update this Cookie Policy from time to time. If we make material changes, we will update the effective date at the top of this page and, where appropriate, notify you through the Service.

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7. Contact Us

If you have questions about our use of cookies, contact us at:

• Privacy inquiries: privacy@harmonize.app
• Legal inquiries: legal@harmonize.app