UPDATED 29 SEPTEMBER 2026
Privacy
Feature Library is a beta project by Evidenso. You can browse the public demo without providing an email address.
When you open checkout
Stripe collects your checkout email and payment details. If you are already signed in, we send your verified email to Stripe to prefill checkout. This action does not subscribe you to marketing or add you to an early-access list. Previously submitted early-access records remain stored until deleted under the retention policy below.
Waitlist
The waitlist saves your email and referral source to send news about new releases, including our launch. It does not collect a card, create a subscription or authorize a future charge.
How we understand the demo
Unless you turn analytics off, we send visits, referral domains, campaign labels, opened examples and plan interest to PostHog. If you haven’t made a choice, analytics is on; the cookie bar on the home page says so. If you submit an email while analytics is enabled, we associate that email with your visitor profile. We do not record sessions, form keystrokes, card data, full referral URLs or raw search text. Signups and checkout openings are recorded to operate the beta. We do not store the text of your searches in analytics. When you use a form or checkout, we set a first-party browser identifier for up to 30 days; with analytics on, we also store a campaign label such as Reddit or X. Cookie settings, in the home page footer, lists every cookie and lets you turn analytics off at any time. PostHog events are sent through our server, only while analytics is on. No advertising pixels or session-replay scripts are loaded.
Member access
Google sign-in shares your verified email and account identifier with us. We store these with a 30-day login session to provide access. We also store your Stripe customer and subscription identifiers, billing email, subscription status and paid-through date. Stripe verifies payments; a browser redirect alone does not grant access. You can manage or cancel your subscription from the library. Inside the library we count searches by tab and category, whether a search found anything, which flows are opened and one visit per day. These counts use a coded member key instead of your email, never include what you type in the search box and are deleted after 90 days.
Storage and access
The launch data is stored on Google Cloud and is accessible only to the Evidenso team operating the beta. It is not published with the feature dataset. We do not sell your contact information. When you join the waitlist or become a member, we also copy your email to a private Google Sheet and send it to our team on Slack. We review the beta list after 90 days and delete entries that are no longer needed, including in the sheet.
Payments
Stripe handles checkout and payment information under its own privacy notice. We do not collect card details on this website. Opening checkout does not charge you; payment is confirmed on Stripe.
Your choices
You can request access to or deletion of your signup data, or ask us to stop contacting you, by emailing arman@evidenso.com. Include the email address you used to sign up. You can also clear the demo’s cookies in your browser.