Plain-language summary first; the detail follows.
You are responsible for your pool: for the rules you set, for collecting what players owe, for paying prizes, and for complying with the law where you and your players are located. Squares pools are treated differently in different places; some jurisdictions restrict them. It is your call whether running one is lawful for you.
You must confirm your email address before publishing a pool. That requirement exists so nobody can create a pool in your name.
If you enable card payments, you do so through your own Stripe account and are bound by Stripe's terms. Payouts, chargebacks and tax reporting for those payments are between you and Stripe.
Claiming a square is a commitment to pay for it. Before you send money to someone you met through this site, remember you are paying a stranger on the internet — the same caution that applies to any peer-to-peer transfer applies here.
A square is only yours once the host confirms payment. Claims can be released if payment never arrives.
When a board is published, the app fixes the random 0–9 rows and publishes a SHA-256 commitment to the seed that produced them. The seed is revealed when the board is locked. Anyone can hash the revealed seed and compare it to the commitment, which proves the digits were not chosen after the squares were sold. We cannot change that after the fact, and neither can a host — the commitment is also written to an append-only audit log.
Keep your password to yourself. We may suspend an account or a pool that appears to be fraudulent, abusive, or used to harass people.
This software is provided as-is, without warranty of any kind. We are not liable for money you lose, prizes that go unpaid, or a game result you disagree with. If that is not acceptable, do not use the service.
These terms may change. Continued use after a change means you accept the updated version.