ProLightX Terms of Service

Last updated: October 5, 2026 · Applies to ProLightX v0.1.0+

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These Terms of Service ("Terms") govern your use of ProLightX ("the App"), a macOS photo editor published by yutao ("we", "our", "us"). By downloading, installing, or using the App, you agree to these Terms. If you do not agree, do not use the App.

1. The App

ProLightX is a photo editing and library management application for macOS 14 Sonoma or later, running on Apple Silicon Macs. It imports, organizes, and edits RAW and JPEG photos. All image processing happens locally on your Mac; see our Privacy Policy for details.

The App is offered in two tiers:

• Free tier — full library management, basic color editing (Basic panel, tone curve, HSL, detail, lens, crop, geometry), 3 built-in film simulation stocks, histogram and comparison tools, and full-resolution export (JPEG/HEIC/TIFF).
• ProLightX Pro — a paid auto-renewable subscription that unlocks additional features: all 15 film stocks and the Film Workshop, color grading wheels, local adjustments, parallel nodes, the node graph editor, professional scopes (vectorscope, sphere histogram), silver-halide grain and film emulsion effects, XMP sidecar export, and future Pro features.

2. License

We grant you a personal, non-exclusive, non-transferable, revocable license to install and use ProLightX on Apple-branded computers that you own or control, for personal or professional use, subject to these Terms and:

• If obtained from the Mac App Store — the Apple Media Services Terms and the App Store Usage Rules.
• If obtained as a direct download from our website — these Terms alone.

You may not: copy, modify, or distribute the App; reverse engineer or decompile it (except where such restriction is prohibited by applicable law); rent, lease, sell, or sublicense it; remove or alter any proprietary notices; or use it to violate any law or third-party rights.

3. ProLightX Pro subscription

• Plans and pricing — ProLightX Pro is offered as a monthly subscription (US $2.99/month), a yearly subscription (US $24.99/year), or a one-time lifetime purchase (US $99). Prices are shown in your local currency in the App Store at the time of purchase and may vary by region.
• Billing — Payment is charged to your Apple ID account at confirmation of purchase. The subscription renews automatically unless you cancel at least 24 hours before the end of the current billing period. Your account is charged for renewal within 24 hours prior to the end of the current period.
• Free trial — New subscribers may be offered a 14-day free trial. At the end of the trial, the subscription converts to a paid plan unless you cancel before the trial ends. Any unused portion of a free trial is forfeited when you purchase a subscription.
• Managing and cancelling — You can manage or cancel your subscription at any time in System Settings → Apple ID → Subscriptions. Cancellation takes effect at the end of the current billing period; no partial-period refunds are provided by us.
• Refunds — All billing is handled by Apple. Refund requests are subject to Apple's refund policy and must be submitted to Apple.
• Restore purchases — You can restore your subscription on any Mac signed in with the same Apple ID using the "Restore Purchases" button in the App. Family Sharing is supported where enabled in the App Store.
• Price changes — If we change subscription pricing, Apple will notify you in advance and your continued subscription after the change constitutes acceptance of the new price.

4. When a subscription ends

When your Pro subscription expires or is cancelled:

• Pro feature entry points are locked; the free tier remains fully functional.
• Your photos, catalog, ratings, and all existing edits are preserved in full. Photos previously edited with Pro features continue to render exactly as before — you never lose work because a subscription lapses.
• Re-subscribing at any time restores access to Pro features immediately.

5. Your content

You retain all rights to your photos and edits. We claim no ownership, license, or other rights over any image you import, edit, or export with ProLightX. Because the App processes everything locally on your Mac, your content is never transmitted to us in the first place.

You are solely responsible for your content and for ensuring you have the rights to edit and export it.

6. Updates

We may release updates that add, change, or remove features. The Mac App Store version is updated through the App Store; the direct-download version updates via the built-in Sparkle mechanism (which can be disabled in Settings). These Terms apply to all updates unless an update is accompanied by separate terms.

7. Intellectual property

ProLightX, including its code, design, film simulation profiles, and documentation, is owned by us and protected by applicable intellectual property laws. These Terms do not grant you any rights to our trademarks or branding.

8. Disclaimer of warranties

ProLightX is provided "as is" and "as available", without warranties of any kind, express or implied, including but not limited to warranties of merchantability, fitness for a particular purpose, and non-infringement. We do not warrant that the App will be uninterrupted, error-free, or that all RAW formats from every camera will be supported.

You are responsible for backing up your photos and catalog. We recommend keeping independent backups of your original files.

9. Limitation of liability

To the maximum extent permitted by applicable law, in no event shall we be liable for any indirect, incidental, special, consequential, or punitive damages, or any loss of data, profits, or revenue, arising out of or related to your use of the App. Our total aggregate liability for any claim arising from these Terms or the App shall not exceed the amount you paid us for the App in the twelve months preceding the claim (or US $50 if you paid nothing).

Nothing in these Terms excludes or limits liability that cannot be excluded or limited under applicable law, including statutory consumer rights.

10. Termination

You may stop using the App at any time by uninstalling it. We may terminate or suspend your license if you breach these Terms. Sections 5, 7, 8, 9, and 11 survive termination.

11. Governing law

These Terms are governed by the laws of the People's Republic of China, without regard to conflict-of-law principles. If you are a consumer, you retain the protection of any mandatory provisions of the law of your country of residence.

12. Changes to these Terms

If we make material changes to these Terms, we will update the "Last updated" date at the top of this page and show an in-app notice on the next launch. Your continued use of the App after the changes take effect constitutes acceptance of the revised Terms.

13. Contact