Last updated: September 2026
To understand how the site is used, PennySignal measures page visits with PostHog: which pages are viewed, the referring site, the browser and device type, and an approximate location derived from the IP address. This relies on a cookie that identifies a browser, not a person. No visitor profile is created unless you sign in, and this data is never sold or used for advertising.
Members sign in with their ClusterSignal account (email address and a one-time code); that account is described in ClusterSignal's privacy policy.
PennySignal members use the same account as ClusterSignal. That account (your email address, language preference and subscription status) and the payment of your subscription through Stripe are managed by ClusterSignal and described in ClusterSignal's privacy policy.
PennySignal uses your email address only to send you its alerts, and, if you turned them on, push notifications on your device. Every alert email includes a link to unsubscribe in one click. Your email address is never sold, rented or shared for marketing purposes.
PennySignal uses the following services to operate:
Each of these services has its own privacy policy.
You can block the statistics cookie in your browser settings without losing access to the site. To access, correct or delete data tied to your account, or for any other question, reach out using the contact below.
For any question about this policy: contact@clustersignal.io