// LEGAL
Privacy Policy
Last updated: 2026
What we collect
Nothing, on our end. There are no user accounts, no sign-up forms, and no server-side database. This site does not run analytics or tracking scripts and does not use cookies to identify you.
Where your designs live
Everything you build — nodes, connections, sticky notes, annotations, and saved projects — is stored locally in your browser's localStorage, on your device only. Nobody else can see it, and it never touches a server.
Share links
The Share button encodes your current design into the URL itself (as a compressed, encoded parameter). Anyone with that link can open and view the design it contains. Don't share a link to a design you consider private.
Clearing your data
Clearing your browser's site data for this app removes everything: your saved designs, onboarding state, and preferences. There is no account to delete because there is no account.
Third-party links
The footer links to other independent projects (Byoos, ReactMastery, psachno.vercel.app, SprintMagic). Those sites are not operated by us and have their own privacy practices — this policy only covers System Design Simulator.
Changes
If this project ever adds accounts, analytics, or server-side storage, this page will be updated to say so plainly before that data collection begins.