Your solves are yours.

Cubeathon is local-first. Your solve times, scrambles, sessions, penalties, theme preference, and learning progress are stored in your browser's local storage on your own device. This data never leaves your device unless you create an account and sign in to sync.

Clearing your browser's site data removes it permanently — so we recommend using the built-in JSON export on the timer page as your own backup.

If you create an account, we store your username, an optional email address, and a securely hashed password — never the password itself. Signing in lets Cubeathon copy your solves to our server so they follow you across devices. Your sign-in token is kept in your browser's local storage, not in cookies.

Synced data is used for exactly one purpose: showing you your own solves, sessions, and statistics. We do not sell, share, or monetize your data.

Cubeathon currently sets no cookies and includes no analytics, advertising, or third-party tracking scripts of any kind. Fonts are self-hosted, so pages load without calling third-party services. Like any website, our server processes the technical details of requests (such as your IP address) transiently in order to respond to them.

You can export all of your solve data as a JSON file from the timer page at any time, and import it back later — this works with or without an account. To delete your account and all synced data, email [email protected] from the address associated with your account and we will remove it.

If this policy changes, we will update this page and the date above. Material changes will be called out plainly — no silent rewrites.

Questions about privacy? Reach us at [email protected] or via the contact page.