Cookie Policy

Effective Date: March 21, 2026
Last Updated: March 21, 2026

1. What Are Cookies?

Cookies are small text files stored on your device when you visit a website. They help websites remember your preferences and provide essential functionality.

2. How We Use Cookies

Ariel uses a minimal set of cookies, limited to what is strictly necessary to operate the Service. We do not use cookies for advertising, tracking, or profiling.

3. Cookies We Use

Essential Cookies

These cookies are required for the Service to function. They cannot be disabled.

Cookie	Purpose	Duration
`auth_token`	JWT authentication — keeps you signed in	Session / 7 days
`csrf_token`	CSRF protection for form submissions	Session
`lang`	Stores your language preference (EN/ES)	1 year

Functional Cookies

Cookie	Purpose	Duration
`theme`	Stores your light/dark theme preference	1 year

Analytics Cookies

We do not use analytics cookies. We do not use Google Analytics, Mixpanel, Hotjar, or any third-party analytics service that sets cookies.

Marketing Cookies

We do not use marketing or advertising cookies.

4. Third-Party Cookies

Ariel integrates with third-party services for payment processing and authentication:

Stripe may set cookies during the checkout and billing process to prevent fraud. See Stripe’s Cookie Policy.
Google/GitHub OAuth may set cookies during the sign-in flow if you choose OAuth authentication. These are governed by Google’s and GitHub’s respective privacy policies.

We do not control third-party cookies. Review each provider’s policies for details.

Browser Controls

All modern browsers allow you to view, manage, and delete cookies through their settings:

Chrome: Settings > Privacy and Security > Cookies
Firefox: Settings > Privacy & Security > Cookies
Safari: Preferences > Privacy > Manage Website Data
Edge: Settings > Cookies and Site Permissions

Impact of Disabling Cookies

Since we only use essential cookies, disabling them will prevent you from:

Signing in to your account
Submitting forms (CSRF protection will fail)
Retaining your language and theme preferences

The Service cannot function without essential cookies enabled.

6. Do Not Track

We respect Do Not Track (DNT) browser signals. Since we do not perform cross-site tracking, no changes to our behavior are necessary when DNT is enabled.

7. Updates to This Policy

We may update this Cookie Policy if we change how we use cookies. Material changes will be noted on this page with an updated effective date.

8. Contact Us

For questions about our cookie practices:

Email: privacy@ariel.donostia.ai
General Support: support@ariel.donostia.ai
Company: Donostia OÜ
Jurisdiction: Estonia

Last Updated: March 21, 2026