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Terms of Service

Effective date: September 29, 2026Last updated: September 29, 2026

These terms govern your use of CH-UI, operated by Caio Ricciuti (“CH-UI”, “we”, “us”). They cover this website, the CH-UI software (open-source core and commercial Pro modules), and Pro license purchases through our license service. By using any of these, you agree to these terms.

1. The software & licensing

  • CH-UI core (open source) is licensed under the Apache License 2.0. You may use, modify, and distribute it under those terms, including commercially.
  • CH-UI Pro modules are source-available under the Business Source License 1.1. Using them in production requires a valid Pro license, purchased under the terms in Sections 3 and 4.
  • The license service at license.ch-ui.com handles Pro license purchases, trials, and license delivery. It is the only hosted service we operate; CH-UI itself always runs on your infrastructure.

2. Self-hosting

  • You are responsible for your own deployment, data, backups, security, and legal compliance.
  • The software is provided “as is” without warranty (Section 8).

3. Pro licenses & billing

  • Price & currency. The price is shown on our pricing page in US dollars (USD), per instance, per year. Taxes may apply; the total you will be charged, including any tax, is shown at checkout before you pay.
  • Payment. Payment is taken in advance through Stripe Checkout. We never see or store your full card details.
  • Automatic renewal. A Pro license is a yearly subscription. It renews automatically every year, at the then-current price, and is charged to the payment method on file until you cancel.
  • How to cancel. Use “Manage subscription” on the license page: enter your purchase email and the license service at license.ch-ui.com emails you a secure link to the Stripe customer portal, where you can cancel online. You can also email us at the address in Section 12. Cancelling stops future renewals; your license stays valid until the end of the period you have paid for.
  • Delivery. Your license is a signed file emailed to you right after payment. It is verified offline by your deployment; no connection to our servers is required to use it. You can have it re-sent at any time from the license page.
  • Validity. Each license file carries its own expiry date. Because it is verified offline, we cannot deactivate a license file once it has been delivered: it stays technically valid until that date. What we can do is decline to renew it or to issue a new one.
  • Trials. We may offer time-limited trial licenses, one per person. Trial licenses expire automatically and are not renewed.
  • Refunds & chargebacks. Apart from the withdrawal right below and anything else required by law, fees already paid are non-refundable. If a payment is refunded or reversed (including a chargeback), your right to use Pro modules in production under that license ends, and we may decline to renew it or issue further licenses to you.
  • Price changes. We may change prices. A change applies from your next renewal, and we will tell you by email before that renewal is charged, so you can cancel first.

4. If you buy as a consumer

This section applies if you buy as a consumer, that is, for purposes outside your trade, business or profession. Nothing in these terms takes away rights you have under the mandatory consumer law of the country where you live.

  • 14-day right of withdrawal. EU consumers may withdraw from a purchase within 14 days of it, without giving a reason, by telling us so by email at the address in Section 12. We refund the payment within 14 days of receiving your notice, using the same payment method.
  • When the right is lost. A Pro license is digital content supplied immediately. The withdrawal right ends once delivery of the license has begun only if, before paying, you expressly agreed to immediate delivery and acknowledged that you would lose the right to withdraw. If you did not give that consent at checkout, you keep the full 14 days.
  • Complaints. Send any complaint to the address in Section 12. We reply by email and within 15 days at most.

5. Acceptable use

You agree not to:

  • Use CH-UI to violate any law or third-party rights, or to store or process data you are not authorized to handle.
  • Attempt to disrupt, overload, gain unauthorized access to, or probe the security of the license service.
  • Share, resell, or misrepresent Pro licenses, or circumvent or tamper with license verification.

If a license is obtained or used in material or repeated breach of these terms, your right to use it ends and we may decline to renew it or to issue further licenses to you.

6. Your data & ownership

  • Your data is yours. CH-UI runs on your infrastructure; we claim no ownership of, and receive none of, the content you connect, query, or create.
  • For license purchases, we handle only your name, email, and purchase records, as described in the Privacy Policy, which forms part of these terms.
  • Name and logo. The CH-UI name and logo belong to Caio Ricciuti. The Apache 2.0 and Business Source License 1.1 licenses cover the code, not the name or logo. A fork or redistribution may say it is based on CH-UI, but must not present itself as the official CH-UI or use the logo as its own.

7. Availability

We aim for high availability of the license service, but it is provided without a formal uptime SLA. Because licenses are verified offline, availability of the license service never affects your running CH-UI deployment. Enterprise agreements may include specific SLA and support commitments.

8. Disclaimer of warranty

THE SOFTWARE AND SERVICE ARE PROVIDED “AS IS” AND “AS AVAILABLE”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NONINFRINGEMENT.

9. Limitation of liability

To the maximum extent permitted by law, CH-UI shall not be liable for any indirect, incidental, special, consequential, or punitive damages, or any loss of profits, revenue, or data. Our total liability for any claim relating to the service is limited to the amount you paid us for it in the 12 months preceding the claim. None of this limits liability that cannot be limited by law, or the statutory rights of consumers.

10. Termination

You may stop using CH-UI at any time. For material breaches of these terms we may end your right to use a Pro license and decline to renew it; as licenses are verified offline, this is a contractual step, not a remote switch-off. Termination does not affect your rights to the open-source core under the Apache License 2.0. On request, we will delete your contact details as described in the Privacy Policy.

11. Changes

We may update these terms. Material changes will be posted here with a new “last updated” date; continued use after changes constitutes acceptance.

12. Contact

Questions about these terms: me@caioricciuti.com. The operator’s tax ID and the other details Spanish law requires are in the legal notice.