Legal
This website
This site is run by Neul Space Ltd, registered in England and Wales, number 15195236, and is served through Cloudflare. It sets no cookie, runs no script, and loads nothing from anyone else. It holds no journal and no account: nothing you do here is tied to anything you might later write in the app.
Like any website, requests to it are logged by the host. Cloudflare keeps a sample of individual requests, each with the address it came from, the page asked for and the browser's name, and it is kept for 31 days. Daily totals, with no address in them, are kept for 365 days. We read the totals. Nothing is added to the page to make any of this happen, and it sets no cookie.
The app
Journal with Marcus is not yet public. Its privacy policy, terms and the account of what data is held and how to ask about it will be published here when it is, and not before.