Cookie Policy
Last updated: April 6, 2026
1. What Are Cookies?
Cookies are small text files that are stored on your device (computer, tablet, or mobile phone) when you visit a website. They allow websites to recognize your device, remember your preferences, and provide a personalized experience. Cookies are essential for many modern website features.
2. How We Use Cookies
KYFS Finance uses cookies and similar technologies for the following purposes:
3. Types of Cookies We Use
Authentication Cookies
These are strictly necessary for the website to function securely. They manage your login session, ensuring you stay authenticated while navigating between pages. These cookies cannot be disabled without impacting core functionality.
Cookie Names: sb-access-token, sb-refresh-token, supabase-auth-token
Duration: Session / Up to 7 days
Purpose: Secure user authentication via Supabase
Preference Cookies
These cookies remember your preferences and settings, such as your chosen theme (light/dark mode) and display preferences. They improve your experience by not requiring you to reconfigure settings on each visit.
Cookie Names: theme
Duration: Up to 1 year
Purpose: Remember theme preference (light/dark)
Analytics Cookies
We use Vercel Analytics to understand how visitors interact with our website. This data is anonymous and does not identify individual users. It helps us improve the user experience and understand which calculators are most popular.
Provider: Vercel Analytics
Duration: Session
Data Collected: Page views, referrer, device type (anonymized)
Personal Data: No personally identifiable information is collected
4. Local Storage
In addition to cookies, we may use your browser's local storage to save your calculator inputs between sessions for your convenience. This data is stored entirely on your device, is not transmitted to our servers, and can be cleared at any time by clearing your browser's local storage or site data.
5. Third-Party Cookies
We use the following third-party services that may set their own cookies:
- Supabase: Our backend authentication provider. Subject to Supabase's Privacy Policy.
- Vercel: Our hosting provider for anonymized analytics. Subject to Vercel's Privacy Policy.
We do not use advertising cookies, tracking pixels, or any third-party marketing services. We do not sell your personal information to third parties.
6. Managing Cookies
You can control and manage cookies in several ways:
- Browser Settings: Most browsers allow you to refuse cookies or delete specific cookies through your browser settings. Note that disabling essential cookies will prevent you from logging in.
- Clearing Site Data: You can clear all cookies and local storage for our site in your browser's developer tools under the "Application" or "Storage" tab.
- Logging Out: Logging out of your account will clear your authentication cookies.
7. Security of Authentication Cookies
Our authentication cookies are secured with industry-standard protections:
- Transmitted only over HTTPS (encrypted connections)
- Set with the
Secureflag to prevent transmission over insecure channels - JWTs (JSON Web Tokens) are time-limited and automatically expire
- Session tokens are invalidated upon logout
8. Changes to This Policy
We may update this Cookie Policy from time to time to reflect changes in our practices or applicable laws. We will indicate the date of last update at the top of this page. Your continued use of our Service after changes constitutes acceptance of the updated policy.
9. Contact Us
If you have any questions about our use of cookies or this policy, please contact us: