Terms of Service
Last updated November 11, 2026
These terms apply to everyone who uses Hardset (“we”, “us”), with or without an account. By using Hardset you agree to them and to our privacy policy. If you don't agree, please don't use Hardset.
Who can use Hardset
You must be at least 13, or older if your country sets a higher minimum age for using online services without a parent's consent. We delete accounts we learn belong to someone under 13.
Your account
- One account per person. Don't create extra accounts to get more attempts or to boost a ranking.
- Keep the email, Google or GitHub account you sign in with secure: anyone who controls it can get into your Hardset account.
- You can delete your account at any time in Settings.
Play fair
- No bots, scripts, solvers or outside help on ranked problems, and don't share answers to a day's problems before that day ends.
- Don't scrape Hardset, overload it, or try to get around its security, rate limits or anti-cheat checks.
- Answers faster than a person could plausibly give score zero and are reviewed by a person. If we believe you've cheated, we may remove scores, hide you from leaderboards, or suspend or delete your account.
Names and messages
Display names, party nicknames and anything you send us must not impersonate anyone, include someone else's personal information, or be offensive or unlawful. We may change a display name that breaks this rule; you'll see a notice in the app when we do.
Sharing
You're welcome to share your results, challenge links and result images anywhere. They show your time and points, never your name or email.
Our content
Hardset's puzzles, design and software belong to us or the people we license them from. You may use them for your own, non-commercial play. Don't copy, republish or sell the puzzles or the puzzle bank. Quotations used in puzzles belong to their authors.
The service
Hardset is free. We may add, change or remove features, correct scores, ratings and rankings, or stop offering Hardset, at any time. Puzzles are for practice and enjoyment: we make no claims about intelligence, cognitive or health benefits.
No warranty
Hardset is provided “as is” and “as available”. As far as the law allows, we don't promise that it will always be available, free of errors, or that puzzles, scores or rankings will be correct.
Limits on liability
As far as the law allows, we aren't liable for indirect, incidental or consequential losses, or for lost data, arising from your use of Hardset, and our total liability to you for any claim is limited to US$50. Nothing in these terms limits liability that can't be limited by law, such as for fraud or for injury caused by negligence.
Governing law and international users
Hardset is run from the United States. These terms are governed by the laws of the United States and of the U.S. state where Hardset's operator is based, and disputes go to the courts there.
If you live outside the United States, you keep any consumer protections that the law of your country gives you and that can't be waived by agreement, including, where that law allows, the right to bring a claim in your local courts.
Changes to these terms
If we change these terms, we'll update the date at the top. For significant changes, we'll tell you in the app before they take effect. If you keep using Hardset after that, the new terms apply.
Contact
Questions about these terms: use our contact form.