What we collect. What we don’t.

When you join early access, your email is sent to POST /api/waitlist on this site. The server saves it to a local waitlist file (best-effort — ephemeral on free hosting) and dual-writes a durable copy to PostHog as a waitlist_signup event (distinct id = your email).

We use that address for invite / waitlist updates only — not a newsletter drip, not a sales sequence. If you already signed up, a duplicate submit is ignored.

spawnapp.org uses PostHog (US cloud) for product analytics: pageviews, pageleave, and custom spawnTrack events. Person profiles are identified_only — we don’t build rich profiles for anonymous browsers by default.

Waitlist signup is also captured server-side so the list survives redeploys. Analytics help us see what pages convert and what’s broken — not to resell audiences.

We load the Sentry browser SDK (deferred until the page is idle) in the production environment with a low traces sample rate. That catches client-side errors so we can fix the site — not track you across the web.

Apps you build in Spawn stay on your machine until you choose to publish. Secrets and domain settings you configure in the builder are yours — they are not scraped from this marketing site.

This page covers spawnapp.org (the public marketing / waitlist site). The builder’s local data stays local until you Go Live.

On-site Build is different: apps you make there (their files and undo history) are stored in Spawn’s database so they survive site updates. They are tied to a random token kept in your browser’s local storage — we keep only a hash of it, no name or email. Delete a build from My builds to remove it, or download a zip to keep your own copy.

PostHog may set analytics cookies so visits and events work reliably. The waitlist itself is an email POST — this marketing site does not use HttpOnly account-session cookies for waitlist signup.

If Spawn adds account auth on this site later, we’ll update this page to describe those cookies honestly.

• We do not sell your data.
• We do not run a newsletter / pitch-deck drip off the waitlist.
• We do not claim fake “compliance badges” or invent a legal entity for theater.
• We do not hold your Spawn project files on this marketing host.

Privacy questions about this site or the waitlist: use early access or the paths on the site — we’ll respond through the same invite channel. For product privacy on your machine, see the FAQ Privacy & machine section.