Privacy
Flossmark is being made by Shadowmark Ltd, a company registered in England and Wales (company number 17533305), registered office Level 30, The Leadenhall Building, 122 Leadenhall Street, London EC3V 4AB. We are the controller of the data described here. Questions or removal requests: hello@shadowmark.net.
The waitlist
- If you join, we keep your email address, the date, your country as our host sees the connection, which link brought you (the
srctag), and the optional answers you give (device, current app, tester, launch-price reservation). - We use it only to email you about Flossmark's testing and launch. Our lawful basis is your consent, which you can withdraw at any time by emailing us or using the link in any email we send.
- It's stored privately in the EU with Cloudflare, never sold or shared, and deleted if you ask or if Flossmark doesn't launch.
- Pressing "Reserve the £9.99 launch price" records an anonymous click (and which link brought you). Nothing is charged.
- We count page visits by link anonymously. There are no cookies, no adverts and no third-party trackers.
Your charts
When the app is out, your PDF charts and progress stay on your device. We never upload, see or share them.
You can complain to the Information Commissioner's Office (ico.org.uk). Last updated 1 November 2026.