Privacy

0 Club is the controller of the personal data described here. Contact support@0club.io. The same address is in Settings → Help & Support.

• Your account. You sign in through Privy with an email one-time passcode. We store the identifier Privy gives us, the handle and display name you choose, an optional bio, and the time you accepted the Terms. Ordinary sign-in does not give us a password. The App Review demo account is the one exception: that account uses a user name and password so Apple can sign in.
• Wallet addresses you link. Public blockchain addresses only, and only ones Privy has already verified are yours. We never hold a private key and never ask for a signature ourselves.
• Your X account, if you link one. We store X's numeric user id and your @handle so the badge on your profile stays correct after a rename. The link is authorised by Privy, not by what you type.
• What you write and do. Predictions, arguments, wallet labels, club posts, room messages, follows, watchlists, reports and blocks.
• Push tokens, if you turn on lock-screen flag alerts. We store the device token so Apple Push Notification service can deliver those alerts. Turning alerts off deletes the token.
• Your email, if you joined the waitlist.
• Device preferences stored as cookies on your device: theme, haptics, onboarding, and whether flag alerts are on. These are not advertising cookies.
• Ordinary server logs, including your IP address, which is what rate limiting is measured against.

If you tap Save image on a share card, iOS may ask for add-only Photos access. The image is written to your camera roll on the device. We do not upload that photo.

Your handle, display name, bio, join date, linked X badge, XP, published predictions and their outcomes, public wallet labels, and your follower count. This is a reputation product: a track record nobody can check is not a track record.

What is not public: your email, your watchlist, who you follow, who you block, your unpublished drafts, and your private or club-scoped labels. Only the follower count is public — never the list.

We do not sell your data and we run no advertising. These processors help us run the service:

• Privy — email sign-in and optional wallet or X linking.
• Apple Push Notification service — flag alerts, only if you enable them.
• Polymarket public APIs — market questions, odds, public comments, and public trader records. We read that data. We do not send them your 0 Club account.
• OpenRouter (Anthropic models) — server-side only. It matches public news headlines to markets and extracts an argument from a public market comment for the deck. The app has no chatbot. We do not send your private messages to a model.
• LibreTranslate — translation of non-English public text, on our own server.

We process account and UGC data to perform the service you asked for. We process waitlist email on your consent. We process logs and abuse records for security and to meet App Store safety rules. Account data is kept until you delete the account. Server logs are rotated. A scored prediction is kept without your name, as explained below.

You can delete your account from Settings → Account, in the app, at any time. Read this part before you do, because it is not a simple erase and we would rather you knew that first.

Removed immediately: your handle, display name, bio, the identifier Privy gave us, every linked wallet and X account, everyone you follow, every block, and your club memberships. Your posts, labels, shared trades and arguments stop being shown.

Kept, with no author attached: predictions that have already been scored, and the ledger rows recording that they were. We cannot remove these, and the reason is not convenience. Every other forecaster's accuracy is measured relative to the same resolved markets. Deleting your scored predictions would silently change other people's published results to honour your request. What stays cannot be connected to you by anyone reading our database.

Signing in again after deletion creates a genuinely new account. There is no way for us to reconnect it to the old one.

Submitting the waitlist form is your consent to be emailed about the launch, and we record when you gave it. Every email carries an unsubscribe link. Unsubscribing keeps your address on a suppression list rather than deleting it, because a list we have thrown away is one we would mail again by accident. To have it removed entirely, write to support@0club.io.

You can see everything public about yourself on your own profile, edit your handle, name and bio in Settings → Account, and delete your account in the app without asking anyone. If you are in the UK, the EEA or California, you may also ask for a copy of your data, a correction, or a restriction. Write to support@0club.io. We do not sell personal information.

0 Club is not for under-18s. We do not knowingly collect anything from a child. If you believe a child has an account, tell us and we will remove it.