Terms of Service

By downloading, installing, or using Zentro, or by starting a Pro trial or subscription, you agree to be bound by these Terms of Service and our Privacy Policy. If you do not agree, please do not install or use Zentro.

Zentro is a desktop SQL IDE that runs locally on your machine. A cloud backend operated by Zentro manages license validation and subscription status. Zentro does not host your databases, store your queries, or have access to your data.

The app is currently available for Windows, macOS, and Linux. Features and availability may change between releases.

Zentro's core is open source (GPL-3.0-only). A Community Edition built from that source is a separate build that does not contact Zentro's license backend; these Terms apply to the official Zentro build and the services around it.

• Free — Core SQL IDE features are available to all users at no cost, with no time limit and no payment required. The Free tier is not a trial; it does not expire.
• Pro trial — All Pro features are available at no cost for 30 days, once per verified email address and installation. An email address is required to start the trial. When it ends, Pro features require a paid subscription; the Free tier is unaffected.
• Pro — $9.9 per user per month, billed monthly via Polar. Subject to the pricing shown in the app at the time of subscription. Pro includes priority email support, which means Pro requests are answered ahead of the general queue; it is not a guaranteed response time.

You agree not to:

• Reverse engineer, decompile, or disassemble the proprietary Pro components of the Zentro application
• Circumvent, disable, or interfere with license enforcement mechanisms
• Resell, sublicense, or transfer Pro access to others
• Use Zentro for any unlawful purpose or in violation of applicable law
• Attempt unauthorized access to Zentro's backend systems or infrastructure
• Use Zentro to damage, disrupt, or interfere with any database or system you do not have permission to access

Pro subscriptions are processed by Polar, a third-party payment processor. Zentro does not store or process your payment card information. All billing, invoicing, and refund inquiries for paid subscriptions are handled through Polar's customer portal.

The Pro trial is free. No charge will occur unless you explicitly start a paid subscription.

Zentro is provided "as is" and "as available" without warranty of any kind, either express or implied, including warranties of merchantability, fitness for a particular purpose, or non-infringement. Zentro may contain bugs, incomplete features, or breaking changes between releases. We do not guarantee uninterrupted service, uptime, or data integrity.

To the maximum extent permitted by applicable law, Zentro and its developer shall not be liable for any indirect, incidental, special, consequential, or punitive damages arising out of or related to your use of or inability to use Zentro, even if advised of the possibility of such damages.

Our total liability to you for any claim arising from these Terms or your use of Zentro shall not exceed the amounts you have paid for Zentro in the twelve months preceding the event giving rise to the claim. For the Free tier and the Pro trial, this cap is zero.

Zentro's core source code is open source and licensed under GPL-3.0-only. The proprietary Pro components, design assets, and the Zentro name and logos are the property of Nguyen Hoai Nam and are not covered by that license. Third-party components included in Zentro retain their respective licenses. Use of Zentro does not transfer ownership of any intellectual property to you.

Your data — including the databases you connect to, the queries you write, and any results — belongs entirely to you. Zentro claims no rights over your data.

We may suspend or terminate your access to Zentro if you materially breach these Terms. You may stop using Zentro at any time by uninstalling the application.

Provisions that by their nature should survive termination — including limitation of liability, intellectual property, and governing law — will do so.

These Terms are governed by the laws of Vietnam, without regard to conflict of law principles. Any disputes shall first be attempted to be resolved by direct negotiation between the parties.

We may update these Terms from time to time. When we do, we will update the effective date at the top of this page and note material changes in the Zentro changelog. Continued use of Zentro after changes are posted constitutes your acceptance of the revised Terms.

Questions about these Terms: support@zentro-ide.com