Supabase keeps the database, the logins and the photos; Cloudflare serves the website; Brevo sends the emails; Cloudflare Turnstile checks that a person, not a program, sends the join request, booking and removal forms when you are not signed in (it sees your internet address and details of your browser and device, only for this check); Sentry (its data kept in the EU, in Frankfurt) gets a short report when something breaks in the app or on our server: what went wrong, on which page or server function, the name of the browser and system, and the app version, never your name, email, phone number, internet address or what you typed; Better Stack checks every few minutes that the website and the database answer, and sees no personal data. They handle data only to run swtspot. We show no ads, sell no data and do no tracking for advertising. Your browser keeps your sign-in, language and the logins on this device; there are no advertising cookies. Some of them are companies outside the European Union (Supabase, Cloudflare and Sentry are American); data sent outside the EU is protected by the EU's standard contract clauses.