slumbercard does not collect, transmit, or store your CPAP therapy data. Everything is parsed in your browser and stored on your device. There is no server-side database, no analytics on therapy data, and no third-party data sharing.
Cloudflare's edge network logs standard HTTP request metadata (IP address, user agent, requested URL, response status) for abuse prevention and aggregate traffic measurement. Cloudflare Web Analytics gives us cookieless, aggregate visitor counts. We do not set tracking cookies, do not run third-party advertising trackers, and do not have a Google Analytics integration.
Your CPAP therapy data. Your SpO₂ data. The contents of your SD card. Your name, email, or any identifier (other than messages you choose to send to [email protected]).
The gated demo at demo.slumbercard.com uses Cloudflare Access email-OTP. The email address you use is recorded in Cloudflare's Access logs for the duration of your session. We do not send marketing email.
Privacy questions: [email protected]. Last updated 2026-04-30.