Cookies and local storage

Degree Margins uses the minimum browser storage it needs to work. There are no advertising, analytics, social media or tracking cookies, so we do not ask you to accept any.

Cookies

Name	Purpose	How long
dm_ref	Set only if you follow someone's invite link. It remembers their referral code so it can be applied when you create an account, and is deleted once you sign up.	Up to 30 days
__Secure-companion_sid	Keeps you signed in, across the main site and every subject site, and protects forms against cross-site request forgery. It holds a random session identifier, not your password or any content.	Until you sign out, or up to 30 days

These cookies are strictly necessary to provide what you ask for (signing in, or applying the invite you followed), so they do not need consent under the Privacy and Electronic Communications Regulations. If you block the session cookie, you will not be able to sign in.

Local storage and offline copies

Your browser also keeps some data on your device so the app is fast and works when your connection drops:

• Preferences: your theme (light or dark) and text size.
• Offline copies of the app itself and of pages you have recently opened, saved by a service worker so they can be read without a connection.
• Unsaved drafts, briefly, so you do not lose what you were typing if the connection drops, and quick captures made while offline, which are sent to your notebook when you reconnect.
• Tool lists some subject tools keep on your device, such as a law reference list you are building.

This data stays on your device and is not used to track you. Signing out does not remove it; you can clear it at any time in your browser's settings (look for "site data" or "cookies and site data"). On a shared computer, use a private window or clear site data after use.

Other sites

Links to other websites, such as Stripe's payment pages or ProtocolDock Write, take you to services with their own cookie policies.

Last updated 19 October 2026.