Cookies
StackSignal by Compound 30™ · not affiliated with Substack · Last updated 7 October 2026
StackSignal uses only the cookies it needs to sign you in. Nothing else.
| Name | Purpose | Lasts |
|---|---|---|
ss_session | Keeps you signed in. Secure, HTTP-only, first-party. | 90 days, renewed as you use it |
__Host-ss_oauth | Only if you choose Google sign-in: a one-time security check that the sign-in started here. Secure, HTTP-only. | 10 minutes, deleted after use |
No analytics, tracking or advertising cookies. When you pay, Stripe's own checkout page sets its own cookies under Stripe's policy, Google's sign-in page does the same under Google's, and the Compound 30 sign-up box from Substack on the join page under Substack's.
Your theme (light, dark or auto) and the platform and time period you last viewed are remembered in your own browser's storage, not in cookies, and never leave your device.
StackSignal is run by A Roll Media (FZE), United Arab Emirates. Questions: hello@compound30.com.