Fight Klub

Privacy Policy

Last updated: November 11, 2026

The short version. Fight Klub sends the prompts you write to outside AI companies so their models can answer, and we ask your permission before the first fight. We keep your account and fight history so you can come back to them. We do not sell your personal information, we do not show ads, and you can delete your account and its data from inside the app.

1. Who we are

Fight Klub is operated by Fight Klub LLC, 1212 New York Ave NW, Suite 1000, Washington, DC 20005, United States (“Fight Klub”, “we”, “us”). This policy covers the Fight Klub apps for iPhone and Android, the Fight Klub web app, and this website (together, the “Service”). Fight Klub LLC is the controller of the personal information described here.

2. What we collect

InformationWhat it isWhere it comes from
AccountYour email address and a protected (hashed) password; or, if you sign in with Google, your name, email address and Google account identifier.You, or Google at your request
Fight contentThe prompts you write, the fighters and fight type you choose, the answers the models return, the Referee’s verdicts, and your saved fight history.You, and the AI providers
SubscriptionWhether you have a paid plan, which plan, and its renewal or expiry date. We do not receive or store your card number.Apple, Google or Stripe
Usage and deviceHow many fights you run (to apply usage limits), app version, device type, operating system, language, IP address, and crash or error reports.Your device
Messages to usSupport emails and reports you send about AI-generated content, including the content you report.You

We do not ask for your contacts, photos, precise location, microphone or camera. Please do not put sensitive personal information (health, financial, government ID numbers, or other people’s private details) into a prompt.

3. How we use it

  • To run fights: send your prompt to the models you chose, show you their answers and the Referee’s verdict, and keep your history.
  • To run your account: sign you in, keep your subscription in step across phone and web, and apply usage limits.
  • To keep the Service safe and working: prevent abuse, review reported content, fix bugs and measure reliability and cost.
  • To talk to you: answer support requests and send service notices, such as changes to these terms.
  • To meet legal obligations.

We do not use your prompts or fight history for advertising, and we do not use them to train AI models of our own. We do not track you across other companies’ apps or websites.

Where the law asks for a legal basis (for example in the EEA and the UK), we rely on: performing our contract with you (running fights and your account); your consent (sending prompts to AI providers, which you can withdraw); our legitimate interests (security, abuse prevention and improving the Service); and legal obligations.

4. AI providers

A fight works by sending your prompt to the companies whose models you chose. Before your first fight, the app names these providers and asks for your explicit permission. If you do not give it, no prompt is sent and you cannot run a fight.

FighterProviderProvider’s privacy policy
ClaudeAnthropic, PBCanthropic.com/legal/privacy
GPTOpenAI, L.L.C.openai.com/policies/privacy-policy
GeminiGoogle LLCpolicies.google.com/privacy
GrokX.AI Corp.x.ai/legal/privacy-policy

What is sent: the text of your prompt and, where a fight needs it, the other models’ answers (for example, so the Referee can compare them). We do not send your name, email address or payment details with a prompt. The requests are made from our servers using Fight Klub’s own accounts with each provider, so the provider sees the request as coming from Fight Klub, not from your device.

Each provider handles what it receives under its own terms and privacy policy. If we add a provider, we will update this list and ask for your permission again before your prompts go to it.

5. Who else receives data

  • Payment and store providers. Apple (App Store), Google (Google Play) and Stripe (web checkout) process your purchase and tell us your subscription status.
  • Sign-in. Google, if you choose to sign in with Google.
  • Service providers. Companies that host our servers and database, deliver email and collect crash reports, acting on our instructions.
  • Legal and safety. When the law requires it, or to protect the rights and safety of our users, the public or Fight Klub.
  • A change of ownership. If Fight Klub is merged or sold, your information may transfer to the new owner, under this policy.

We do not sell personal information, and we do not share it for cross-context behavioral advertising.

6. How long we keep it

  • Account and fight history: until you delete the fight or your account.
  • After you delete your account: removed from our live systems within 30 days, and from backups within a further 60 days.
  • Server logs and crash reports: up to 90 days.
  • Purchase records: as long as tax and accounting law requires.
  • Reports of AI-generated content: as long as needed to act on the report.

7. Your choices and rights

Wherever you live, you can ask us to tell you what we hold about you, correct it, give you a copy, or delete it. You can also withdraw your permission for sending prompts to AI providers at any time in the app’s settings; fights will stop working until you give it again.

Depending on where you live, the law may give you more: in the EEA, the UK and Switzerland, the rights to restrict or object to processing and to complain to your data protection authority; in California and other US states, the rights to know, delete and correct, and not to be treated differently for using them.

To use any of these, email support@fightklub.ai from the address on your account. We answer within 30 days, and we never charge for it.

8. Deleting your account

You can delete your account from inside the app, in the account settings. This deletes your account, your saved fights and your prompts from our systems on the schedule above. If you cannot use the app, email support@fightklub.ai from the account’s address and we will delete it for you.

Deleting your account does not cancel a subscription bought through Apple or Google. Cancel it in your App Store or Google Play subscriptions first; the support page shows how.

9. Children

Fight Klub is for adults. You must be at least 18 to use it. We do not knowingly collect personal information from anyone under 18; if you believe a child has given us information, tell us and we will delete it.

10. Security

Data is encrypted in transit. Passwords are stored hashed, never in plain text. Fight Klub’s keys for the AI providers are kept on our servers and are never placed inside the app. No system is perfectly secure; if a breach affects your information, we will tell you as the law requires.

11. International use

Fight Klub is run from the United States, and the AI providers process data in the United States and other countries. If you use the Service from elsewhere, your information is transferred to and processed in the United States. Where the law requires a transfer safeguard, we rely on the standard contractual clauses or an equivalent.

12. This website

This website sets no cookies of its own, runs no analytics and loads nothing from advertising or social networks. Like every website, the servers that deliver it keep standard access logs (IP address, browser type, the page requested and the time) for security and reliability.

13. Changes

If we change this policy we will post the new version here and change the date at the top. If a change is significant, we will also tell you in the app or by email before it takes effect.

14. Contact

Fight Klub LLC
1212 New York Ave NW, Suite 1000
Washington, DC 20005, United States
support@fightklub.ai