DisplayHelper Pro End User License Agreement

Effective date: June 18, 2026.

This End User License Agreement ("Agreement") governs your use of DisplayHelper Pro (the "Software"), a macOS utility provided by Xintech LLC ("Xintech", "we", "us", or "our").

By installing, copying, or using the Software, you agree to this Agreement. If you do not agree, do not install or use the Software.

1. License Grant

Xintech grants you a limited, non-exclusive, non-transferable, revocable license to install and use the Software on Mac computers that you own or control, solely for your personal or internal business use.

2. Restrictions

You may not:

sell, rent, lease, sublicense, or commercially host the Software;
redistribute the Software except through an official Xintech-approved release channel;
modify, adapt, translate, or create derivative works of the Software;
reverse engineer, decompile, or disassemble the Software, except where applicable law expressly permits it;
remove or alter copyright, license, or proprietary notices; or
use the Software in a way that violates applicable law.

3. Ownership

The Software is licensed, not sold. Xintech and its licensors retain all rights, title, and interest in and to the Software, including all intellectual property rights. No rights are granted except as expressly stated in this Agreement.

4. macOS Display, Keyboard, and Wi-Fi Behavior

Compatibility note: This app depends on macOS display, keyboard backlight, and network behavior that may change in future macOS updates.

The Software is intended to help manage Mac display behavior, including MacBook built-in display dimming, mirroring-related controls, display adjustments, keyboard backlight control where supported, and optional Wi-Fi switching. Because display configuration, keyboard backlight behavior, Wi-Fi details, security permissions, and hardware support are controlled by macOS and the Mac hardware, Xintech does not guarantee uninterrupted, error-free, or consistent behavior on every Mac or macOS version.

Do not rely on the Software for safety-critical, accessibility-critical, medical, emergency, or other high-risk uses.

5. Updates, Services, and Availability

Xintech may provide updates, but is not obligated to do so. Updates may be subject to this Agreement or to updated terms provided with the update.

To the maximum extent permitted by law, Xintech does not promise that the Software, any particular feature, any update, any download or re-download, any update feed, any license activation or validation service, any third-party integration, or any distribution channel will remain available for any particular period of time. Xintech may modify, suspend, discontinue, remove, or stop distributing the Software or any related feature, update, service, download, distribution channel, or support resource at any time.

Some Software features may depend on macOS, Apple services, third-party services, network connectivity, hardware capabilities, or security permissions. Xintech is not responsible for changes, outages, removals, restrictions, review decisions, or discontinuation by Apple or any third party.

If the Software or a related service is discontinued, copies you already have may continue to function only to the extent they remain compatible with your Mac, macOS version, license status, security settings, and any required third-party services or tools.

6. Privacy

The Software is designed as a local utility. It does not require a Xintech account, does not include analytics, and does not track usage.

Some features may make network requests for actions such as update checks, license activation, license validation, license deactivation, or support email drafts that you explicitly start. Except as described in the Privacy Notice, the Software does not collect, sell, share, or transmit personal information to Xintech.

For more information, see the Privacy Notice provided with the Software.

7. Disclaimer of Warranty

THE SOFTWARE IS PROVIDED "AS IS" AND "AS AVAILABLE", WITHOUT WARRANTIES OF ANY KIND, WHETHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE. TO THE MAXIMUM EXTENT PERMITTED BY LAW, XINTECH DISCLAIMS ALL WARRANTIES, INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NONINFRINGEMENT, QUIET ENJOYMENT, CONTINUED AVAILABILITY, AND UNINTERRUPTED OR ERROR-FREE OPERATION.

8. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, XINTECH WILL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, EXEMPLARY, OR PUNITIVE DAMAGES, OR FOR ANY LOSS OF DATA, PROFITS, REVENUE, GOODWILL, OR BUSINESS OPPORTUNITY, ARISING OUT OF OR RELATED TO THE SOFTWARE OR THIS AGREEMENT, EVEN IF XINTECH HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

TO THE MAXIMUM EXTENT PERMITTED BY LAW, XINTECH'S TOTAL LIABILITY FOR ALL CLAIMS ARISING OUT OF OR RELATED TO THE SOFTWARE OR THIS AGREEMENT WILL NOT EXCEED THE AMOUNT YOU PAID TO XINTECH FOR THE SOFTWARE, OR USD $10 IF YOU PAID NOTHING.

9. Termination

This Agreement terminates automatically if you violate it. Upon termination, you must stop using the Software and delete all copies in your possession or control.

10. Governing Law

This Agreement is governed by the laws of the State of California, excluding its conflict-of-law rules, unless applicable law requires otherwise.

11. Contact

For questions about this Agreement, contact Xintech LLC at admin@xintechllc.com.