Cookie Policy
Last updated: 26 May 2026
What are cookies
Cookies are small text files that websites store on your device to remember things like your login state, preferences, or analytics. Some are essential; others are optional and require your consent under the EU ePrivacy Directive.
Cookies chartgrade uses
Essential (no consent required)
| Name | Purpose | Lifetime |
|---|---|---|
| sb-access-token | Supabase auth session | 1 hour, refreshed |
| sb-refresh-token | Supabase auth refresh | 30 days |
| iron-session | Encrypted server-side state | Session |
Functional (consent-based)
| Name | Purpose | Lifetime |
|---|---|---|
| chartgrade:account_equity | Remember your account equity input for position sizer | Persistent (localStorage, your device only) |
| chartgrade:risk_pct | Remember your risk % preference | Persistent (localStorage) |
| chartgrade:day_mode | Remember your Day Trade Mode setting | Persistent (localStorage) |
Note: these are localStoragevalues, not technically cookies — they don't leave your device or transmit to our servers. Disclosed here for transparency.
Analytics (consent-based)
We use privacy-friendly analytics (Vercel Analytics or Plausible) which do not set tracking cookies and do not transmit personal data. If we add behavioral analytics in the future we will update this policy and request consent.
Third-party
| Provider | Used for | Their policy |
|---|---|---|
| Stripe | Payment processing (only during checkout) | stripe.com |
Managing cookies
You can disable cookies in your browser settings. Note that disabling essential cookies will prevent login from working. For functional localStorage values, you can clear them via your browser's "clear site data" tool.
Contact
Questions: privacy@chartgrade.app