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    Cookie Policy

    Last updated: December 24, 2025

    1. What Are Cookies

    Cookies are small text files that are placed on your computer or mobile device when you visit a website. They are widely used to make websites work more efficiently and to provide information to the owners of the site.

    We also use similar technologies including localStorage, sessionStorage, and web beacons. localStorage persists data between browser sessions, while sessionStorage clears when you close your browser. Web beacons are small graphic images that help us understand how you interact with our service.

    2. How We Use Cookies

    We use cookies for the following purposes:

    • Authentication: We use cookies to keep you logged in and maintain your session securely across page visits.
    • Preferences: We store your settings such as theme (light/dark mode), language preference, and unit preferences (metric/imperial).
    • Security: Cookies help protect against cross site request forgery (CSRF) and other security threats.
    • Analytics: We use error tracking to understand and fix issues with the application.
    • Performance: Cookies help us cache data appropriately to improve loading times and reduce server load.

    3. Types of Cookies We Use

    Essential Cookies

    These cookies are strictly necessary for the website to function and cannot be switched off. They are usually only set in response to actions you take, such as logging in or filling out forms.

    Cookie NamePurposeDuration
    sb-*-auth-tokenAuthentication session managementSession / 1 year
    sb-*-auth-token-code-verifierOAuth PKCE security verificationSession

    Functional Cookies

    These cookies enable enhanced functionality and personalization, such as remembering your preferences. If you do not allow these cookies, some or all of these services may not function properly.

    Storage KeyPurposeDuration
    themeStores your light/dark mode preferencePersistent
    i18nextLngStores your language preferencePersistent
    cookie-consentRemembers your cookie consent choicePersistent
    ally-chat-*Caches chat conversation data for offline accessPersistent

    Analytics Cookies

    These cookies help us understand how visitors interact with our website by collecting and reporting information. This helps us improve our service.

    Cookie NamePurposeDuration
    sentry-*Error tracking and performance monitoringSession

    4. Third Party Cookies

    In addition to our own cookies, we may also use various third party cookies to report usage statistics and deliver content:

    • Sentry: Error monitoring and performance tracking to help us identify and fix issues quickly.Privacy Policy
    • Google AI (Gemini): Powers our AI chat assistant and water test analysis features. Data is processed according toGoogle's Privacy Policy
    • OpenAI: Alternative AI provider for certain features.Privacy Policy

    5. Your Cookie Choices

    You have several options for managing cookies:

    • Cookie Banner: When you first visit our site, you can accept or reject non-essential cookies through our cookie consent banner.
    • Cookie Preferences: You can manage your cookie preferences at any time through our Cookie Preferences center.
    • Browser Settings: You can configure your browser to refuse cookies or alert you when cookies are being sent.

    Note: If you choose to disable essential cookies, some features of Ally may not function properly, particularly authentication and session management.

    6. Managing Cookies in Your Browser

    Most web browsers allow you to control cookies through their settings. Here are links to instructions for popular browsers:

    For mobile devices, please refer to your device manufacturer's instructions for managing cookies.

    7. Updates to This Policy

    We may update this Cookie Policy from time to time to reflect changes in our practices or for legal, operational, or regulatory reasons. We will notify you of any material changes by posting the new policy on this page and updating the "Last updated" date. For significant changes, we may also display a notice in the app.

    We encourage you to review this Cookie Policy periodically to stay informed about how we use cookies.

    8. Contact Us

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

    Legal Notice

    This Cookie Policy complies with the EU General Data Protection Regulation (GDPR), the ePrivacy Directive (Cookie Law), and the California Consumer Privacy Act (CCPA). For users in the European Economic Area, we obtain consent before placing non-essential cookies on your device. For California residents, you have the right to opt out of the "sale" of personal information, though we do not sell personal data collected through cookies.

    For more information about your privacy rights, please see our Privacy Policy and Your Privacy Rights page.