Terms of Use

You must be at least 13 years old (or the minimum age in your country) to use FlexiChess. If you use it on behalf of an organization, you represent that you are authorized to accept these Terms for it.

You can use the core workstation without an account. If you create one, you are responsible for keeping your login credentials secure and for activity under your account. Authentication is provided by Clerk.

FlexiChess is offered on an evolving basis and some features are in beta. Features may change, be added, or be removed. We aim for high availability but do not guarantee uninterrupted or error-free operation.

Core preparation tools are free. Paid plans (“Pro”) are available as a recurring subscription; the terms in this section apply to Pro and any future paid tiers.

Pro is offered as a recurring monthly or annual subscription. Payments are processed by Polar, which acts as our Merchant of Record — the seller of record responsible for billing, payment processing, and any applicable sales tax or VAT. By subscribing, you authorize recurring charges to your payment method until you cancel. Prices are shown on the pricing page and may change with notice for future billing periods.

Cancellation & refunds: you can cancel anytime from your account or via Polar’s customer portal (linked from your receipt). Cancellation stops future renewals; your subscription remains active until the end of the current paid period. Payments are non-refundable except where required by law.

You retain all rights to the games, PGN/FEN files, annotations, and repertoire you create or upload (“Your Content”). You grant us only the limited license needed to store, process, and sync Your Content to provide the service to you. You are responsible for having the rights to any content you upload.

FlexiChess includes plan-based usage limits to keep the service sustainable — for example, monthly AI coach generations, cloud game storage, collections, and share links. Current limits are shown on the pricing page and in your account summary when signed in. We may adjust limits with reasonable notice as the product evolves.

You agree not to:

• break the law or infringe others’ rights using the service;
• use automated scripts or bots to scrape, hammer, or bulk-query the API;
• circumvent rate limits, plan limits, or authentication — including by creating multiple accounts to evade caps;
• resell or redistribute AI output or the service at scale except as permitted;
• attempt to disrupt, overload, reverse-engineer, or gain unauthorized access to the service; or
• upload malicious code or content you have no right to share.

If your use exceeds fair limits or appears intended to evade them, we may rate-limit, throttle, require an upgrade, or suspend access to protect the service and other users.

FlexiChess, its branding, and its original software are owned by us or our licensors. The service includes open-source software and licensed chess data; those are credited and governed by their own licenses on the Credits & licenses page. Trademarks of other products (including ChessBase) belong to their respective owners; FlexiChess is not affiliated with or endorsed by them.

The service is provided “as is” and “as available,” without warranties of any kind, whether express or implied, including merchantability, fitness for a particular purpose, and non-infringement, to the maximum extent permitted by law.

To the maximum extent permitted by law, FlexiChess will not be liable for any indirect, incidental, special, consequential, or punitive damages, or for loss of data or profits. Our total liability for any claim relating to the service is limited to the greater of the amount you paid us in the 12 months before the claim or USD 50.

Your local data lives in your browser — keep your own backups of anything important. We are not responsible for data lost from clearing browser storage or device failure.

You may stop using FlexiChess at any time. We may suspend or terminate access if you breach these Terms or to protect the service. Sections that by their nature should survive termination (such as content ownership, disclaimers, and liability limits) will survive.

We may update these Terms as the product evolves. Material changes will be reflected by the “Last updated” date above; continued use after changes means you accept them.

These Terms are governed by the laws of Queensland, Australia, without regard to conflict-of-laws rules, and any disputes will be handled in the courts of that jurisdiction, except where local consumer law gives you other rights.

Questions about these Terms: support@flexichess.com.