1. What Are Cookies?
Cookies are small text files placed on your device by a website. They allow websites to remember information about your visit — such as whether you're logged in, your preferences, and how you interact with the site.
We also use browser localStorage, which is similar to cookies but stores data only in your browser without transmitting it to our servers. The controls below apply to both.
2. Essential Cookies
Essential cookies are strictly necessary for the Service to function. Without them you cannot log in or use the application. They do not track you for advertising or analytics purposes.
| Cookie / Key | Provider | Purpose | Duration | Required? |
|---|---|---|---|---|
sb-*-auth-token | Supabase | Stores your authentication session so you stay logged in between page loads | Session / 1 hour | Yes |
sb-*-auth-token-code-verifier | Supabase | PKCE code verifier for secure OAuth flows | Session | Yes |
__stripe_mid | Stripe | Fraud prevention and security for payment processing | 1 year | Yes |
__stripe_sid | Stripe | Stripe session identifier for payment processing | 30 minutes | Yes |
3. Functional Storage (localStorage)
These items are stored in your browser's localStorage — they never leave your device and are never transmitted to Kyndium servers. They remember your application preferences.
| Cookie / Key | Provider | Purpose | Duration | Required? |
|---|---|---|---|---|
kyndium_theme | Kyndium | Remembers your selected colour theme (Ocean, Forest, Midnight, etc.) | Persistent | Yes |
kyndium_custom_theme | Kyndium | Stores your custom theme colour values for instant restoration on load | Persistent | Yes |
kyndium_cookie_consent | Kyndium | Records your cookie consent choices and the policy versions you accepted, so the banner doesn't re-appear unnecessarily | Persistent | Yes |
4. Analytics Cookies
Analytics cookies help us understand how visitors use the Service — which features are most used, where users encounter friction, and how the product is growing. We only activate analytics cookies after you grant consent through the cookie banner.
We use Google Analytics 4 (GA4). With GA4, IP addresses are anonymized before storage and data is processed in accordance with Google's privacy policy. We do not use GA4 for advertising or remarketing.
| Cookie / Key | Provider | Purpose | Duration | Required? |
|---|---|---|---|---|
_ga | Google Analytics | Distinguishes unique users. Used to calculate visit, session, and campaign data | 2 years | Consent |
_ga_* | Google Analytics | Persists session state for Google Analytics 4 data streams | 2 years | Consent |
_gid | Google Analytics | Distinguishes users — used to throttle request rate and store session information | 24 hours | Consent |
_gat | Google Analytics | Throttles request rate — limits data collection on high-traffic sites | 1 minute | Consent |
We also use Vercel Analytics, which is cookieless and collects no personally identifiable information. It measures page views and Core Web Vitals using privacy-preserving methods and does not require consent.
5. Payment Cookies
These cookies are set by Stripe when you interact with payment features. They are necessary for fraud prevention and secure payment processing and cannot be disabled if you use paid Subscription features. If you use only the free Starter plan, these cookies may not be set.
See Stripe's Cookie Policy ↗ for the authoritative list of Stripe cookies.
6. How to Control Cookies
Cookie banner. When you first visit Kyndium, a banner allows you to choose between “Accept All,” “Essential Only,” or “Customize” (granular toggles per category). You can change your choice at any time from the cookie settings link in the page footer.
Browser settings. All modern browsers let you view, manage, and delete cookies and localStorage data. Note that blocking essential cookies will prevent you from staying logged in.
Browser instructions: Chrome ↗ · Firefox ↗ · Safari ↗ · Edge ↗
Google Analytics opt-out. You can opt out of Google Analytics across all websites by installing the Google Analytics Opt-out Browser Add-on ↗.
7. Changes to This Policy
We may update this Cookie Policy when we add or change the cookies or tracking technologies we use. When we do, we will update the “Effective” date above and, where the changes are material, re-trigger the consent banner for returning visitors.
8. Contact
If you have questions about our use of cookies, email privacy@kyndium.com.