Last updated: February 2026
Cookies are small text files stored on your device when you visit a website. They are widely used to make websites work more efficiently, provide a better user experience, and give site owners useful information. This policy explains what cookies Helmwise uses and how you can manage them.
These cookies are strictly necessary for the Service to function. They cannot be disabled without breaking core functionality.
| Cookie | Purpose | Duration |
|---|---|---|
| sb-auth-token | Authentication session token via Supabase. Keeps you signed in securely. | Session |
| sb-refresh-token | Refresh token for maintaining your authenticated session. | 7 days |
| csrf-token | Cross-Site Request Forgery protection. Prevents unauthorized actions on your behalf. | Session |
These cookies remember your settings and preferences to provide a more personalized experience.
| Cookie | Purpose | Duration |
|---|---|---|
| theme | Stores your preferred color theme (light or dark mode). | 1 year |
| locale | Stores your preferred language and unit system (nautical miles, knots, etc.). | 1 year |
| vessel-defaults | Remembers your default vessel selection for quicker passage planning. | 1 year |
These cookies help us understand how the Service is used so we can improve it. All analytics data is collected anonymously.
| Cookie | Purpose | Duration |
|---|---|---|
| sentry-trace | Anonymous error tracking and performance monitoring via Sentry. Helps us identify and fix issues. | Session |
| usage-session | Anonymous session identifier for understanding usage patterns (features used, navigation flows). | 30 days |
We do not use cookies for advertising purposes. We do not use third-party advertising cookies or tracking pixels.
Most web browsers allow you to control cookies through their settings. You can typically find cookie management options in your browser's “Settings,” “Preferences,” or “Privacy” section.
Common browser cookie settings:
Please note: Blocking essential cookies will prevent you from signing in and using core features of Helmwise. Blocking preference cookies will reset your settings to defaults on each visit.
For questions about our use of cookies, contact us at privacy@helmwise.co. For more information about how we handle your data, see our Privacy Policy.