Terms of use

Accurate about the product, not yet reviewed by a lawyer. Do not treat it as final.

zer0 is a place to write down what you think will happen and be scored on it. It is not financial, investment, legal or tax advice, and nothing here is a recommendation to buy or sell anything. Prediction markets can go to zero.

You cannot place a bet, hold a balance, deposit or withdraw money through zer0. We take no custody of funds and we never hold a private key. Market prices shown here are read from Polymarket's public API; trading happens on Polymarket, under Polymarket's terms, not ours.

XP, levels and Proof Scores are reputation. They are not currency, they have no cash value, and they cannot be bought, sold or transferred.

You must be 18 or over. One person, one account. You are responsible for what is posted from your account.

Some handles are reserved — the ones that would let an account read as staff or as zer0 itself. Changing your handle has a cooldown, and a handle you release is held for a while before anyone else can take it, so that a name people have linked to cannot change hands the moment you let it go.

• Impersonate anyone — a person, zer0, or any organisation — in your handle, display name or posts.
• Harass, threaten, or post another person's private information. Attempting to identify the human behind a wallet address is a ban.
• Run more than one account to inflate your own reputation, endorse yourself, or vote on your own work.
• Post spam, invite links, scams, or anything designed to move a market you have not disclosed a position in.
• Scrape, automate against, or overload the service; work around rate limits; or attempt to reach data you have not been given access to.

You can report any message, profile, label, argument or club from the app, and you can block any account — a block hides each of you from the other and severs any follow between you in both directions.

Reports reach a moderation queue. We may remove content or suspend an account for breaking the rules above. Removal is a soft delete: the content stops being shown but the record of the decision is kept, so that moderation itself can be reviewed. Club owners and officers can remove posts inside their own club.

Wallet labels describe public on-chain behaviour and are open to challenge: they can be voted on, reported and removed. A label is somebody's opinion about an address, never a statement of fact about a person.

What you write stays yours. You give us permission to show it inside zer0 — that is what posting means. If you delete your account, your posts stop being shown, but predictions that have already been scored stay in the record with no author attached, because other people's results are measured against them. The privacy page explains this in full, and you should read it before deleting.

zer0 is provided as-is, with no warranty. It is a small product run by one person and it depends on a third party's market data. It can be wrong, late or down. We may change or stop it.

Questions, data requests, and anything about moderation: reach the founder at the address published on the App Store listing for this app.