The agreement.

Last updated: 28 September 2026

This End-User Licence Agreement (the "Agreement") is between you and [Placeholder: seller's legal name], of [Placeholder: seller's registered address] ("Seasill", "we", "us" or "our"). It covers the Seasill desktop software for macOS and Windows, its updates, and the wallpapers it lets you use from Seasill's catalogue (together, the "Software").

By installing, activating or using the Software, you accept this Agreement. If you do not accept it, do not install or use the Software.

1. Definitions

"Account" means the Seasill account — an email address and a password — that you use to sign in to the Software and to seasill.com.

"Catalogue" means the collection of wallpapers that Seasill makes available through the Software, and "Catalogue Wallpaper" means any wallpaper you obtain from it.

"Computer" means one Mac or Windows computer on which the Software is activated with your Account.

"Plan" means the level of the Software you are entitled to — Free, Seasill or Seasill Pro — as described at seasill.com/pricing/.

"Subscription" means a paid Plan.

"Your Content" means videos, images and other media that you add to the Software yourself, including media you add from a link.

2. The licence

2.1 Subject to this Agreement, we grant you a personal, non-exclusive, non-transferable, revocable licence to install and use the Software, in the form in which we provide it, for your own use, on the number of Computers your Plan allows:

• (a) Free: one Computer;
• (b) Seasill: one Computer;
• (c) Seasill Pro: three Computers, in any combination of Mac and Windows.

2.2 You may move the licence from one Computer to another: deactivate the first (by signing out in the Software, or by removing the Computer from your account at seasill.com), then activate the second.

2.3 The Software is licensed, not sold. We and our licensors keep every right that this Agreement does not expressly grant to you.

3. What each Plan includes

3.1 The Free Plan is provided without charge. On the Free Plan, one display plays a wallpaper live at a time and every other display shows a still of its wallpaper; Catalogue Wallpapers play at up to 1080p (1920 × 1080, or 1080 × 1920 in portrait) with a small Seasill mark in a corner; and your library can hold at most five Catalogue Wallpapers at a time.

3.2 Seasill and Seasill Pro remove those limits on the Computers they cover.

3.3 Your Content is never limited by your Plan: it has no resolution cap, no mark and no count.

3.4 We may improve the Software and the Plans. We will not reduce what a Subscription includes during a period you have already paid for.

4. Your Account and activation

4.1 Saving Catalogue Wallpapers, and using a Subscription, require an Account. You must give us a valid email address, keep your password secure, and tell us promptly at support@seasill.com if you believe someone else has used your Account. You are responsible for what happens under your Account.

4.2 When you activate a Computer, the Software sends us your sign-in, a one-way fingerprint derived from the Computer's hardware identifier (the identifier itself never leaves the Computer), the Computer's name and platform, and the Software's version. We return a signed statement of your Plan, which the Software keeps in your operating system's secure storage.

4.3 The Software re-checks your Plan with us from time to time. If it cannot reach us, it keeps your Plan for a limited period (currently up to 14 days after its last successful check), after which it uses the Free Plan until a check succeeds. The Catalogue needs an internet connection.

4.4 How we handle this information is described in our Privacy Policy at seasill.com/privacy/.

5. Free trial, Subscription and renewal

5.1 A Subscription may begin with a free trial of 7 days. A valid payment card is needed to start a trial. Unless you cancel before the trial ends, the Subscription begins when the trial ends and the first yearly fee is charged.

5.2 Subscriptions are billed yearly in advance and renew automatically for further years unless you cancel before the renewal date. A renewal is charged at the price then in effect; we will tell you about a price change before it applies to your renewal.

5.3 You may cancel at any time. Cancellation takes effect at the end of the period you have paid for, and your Plan continues until then. Refunds are described in our Refund Policy at seasill.com/refund/.

5.4 Each paid year includes the updates to the Software that we release during it.

5.5 Prices are shown in US dollars, and taxes may be added where they apply. Payments are processed by our payment provider; we do not receive or store your full card number.

6. When a Subscription ends

6.1 If your Subscription is cancelled or expires, or a payment fails and is not put right within a short grace period, every Computer activated with your Account moves to the Free Plan.

6.2 Nothing in your library is deleted. Catalogue Wallpapers you saved while subscribed stay on your Computer and play within the Free Plan's limits. If your library holds more than five Catalogue Wallpapers, you keep them all, but you cannot save another until it holds fewer than five. They play in full again if you subscribe again.

7. The Catalogue

7.1 Each Catalogue Wallpaper is licensed to you, not sold, for your personal use as a wallpaper — on your desktop and, where the Software offers it, on your lock screen or as your screen saver — inside the Software, on Computers activated with your Account.

7.2 You may not copy Catalogue Wallpapers out of the Software for use elsewhere; redistribute, publish, share, sell, rent or sublicense them; use them in other products, in advertising or for any commercial purpose; or use them to train or improve machine-learning models.

7.3 The Catalogue changes over time. We may add, change or withdraw Catalogue Wallpapers, and a wallpaper that is available today may not be available later.

7.4 All rights in Catalogue Wallpapers remain with Seasill and its licensors.

8. Your Content

8.1 You are responsible for Your Content and for having the right to use it. Some websites and services, YouTube among them, do not allow their videos to be downloaded; when you add media from a link, you must respect the terms of the site it comes from.

8.2 Your Content stays on your Computer. The Software does not upload it to us.

9. Restrictions

Except as this Agreement or applicable law expressly allows, you must not:

• (a) copy the Software, except as needed to install and use it as this Agreement allows;
• (b) sell, rent, lend, share, sublicense or otherwise transfer the Software, your Account or a Plan to anyone else;
• (c) modify, adapt, translate or create derivative works of the Software;
• (d) reverse engineer, decompile or disassemble the Software, except to the extent that applicable law permits it despite this restriction;
• (e) remove, bypass, disable or interfere with the Software's activation, its licence checks, its Plan limits or its corner mark, or use a Plan or an entitlement that you have not been granted;
• (f) use the Software or the Catalogue in a way that places an unreasonable load on our service, or reach the Catalogue by any means other than the Software, including by scraping or automated downloading;
• (g) remove or alter any notice of copyright, trade mark or other rights in the Software; or
• (h) use the Software unlawfully, or to infringe anyone's rights.

10. Third-party software

The Software includes third-party components, each under its own licence; their notices are in NOTICE.md and, on Windows, NOTICE-WINDOWS.md, which are installed with the Software. Those licences govern those components. Nothing in this Agreement limits the rights those licences give you — including, where the GNU Lesser General Public License applies (as it does to libmpv on Windows), your right to modify and relink that component, and to reverse engineer the Software as far as needed to debug such modifications.

11. Updates

We may provide updates, fixes and new versions of the Software. Some may be needed to keep using the Catalogue or to keep your Plan working. This Agreement applies to every update unless the update comes with terms of its own.

12. Ending this Agreement

12.1 You may end this Agreement at any time by uninstalling the Software and, if you wish, deleting your Account.

12.2 We may suspend or end your licence if you breach this Agreement in a material way, and we will tell you why where we reasonably can.

12.3 When this Agreement ends, you must stop using the Software and delete it. Sections 7.2, 9 and 13 to 16 continue to apply.

12.4 When a Subscription ends but this Agreement does not, you may keep using the Software on the Free Plan (section 6).

13. No warranty

The Software and the Catalogue are provided "as is" and "as available". To the fullest extent the law allows, we disclaim all warranties, express or implied, including warranties of merchantability, fitness for a particular purpose, title and non-infringement, and we do not promise that the Software will be uninterrupted or free of errors, or that a particular wallpaper will remain available. Some jurisdictions do not allow these exclusions, so some of them may not apply to you.

14. Limitation of liability

14.1 To the fullest extent the law allows, we are not liable for any indirect, incidental, special, consequential or punitive damages, or for any loss of data, profits or goodwill, arising out of or in connection with the Software or this Agreement.

14.2 To the fullest extent the law allows, our total liability arising out of or in connection with the Software or this Agreement is limited to the amount you paid us for the Software in the twelve months before the event that gave rise to the claim or, if you have paid nothing, fifty US dollars (US$50).

14.3 Nothing in this Agreement limits or excludes any liability that cannot be limited or excluded by law, and nothing in it affects your statutory rights as a consumer.

15. Governing law

This Agreement is governed by the laws of [Placeholder: governing law and courts, to be set with counsel], without regard to their conflict-of-laws rules. If you are a consumer, you also keep the protection of the mandatory laws of the country where you live.

16. General

16.1 Changes. We may update this Agreement. If a change is material, we will tell you in the Software or by email before it takes effect, and using the Software after that means you accept the change.

16.2 Entire agreement. This Agreement, with our Terms of Service and our Privacy Policy, is the entire agreement between you and us about the Software.

16.3 Severability. If any part of this Agreement is found unenforceable, the rest of it remains in effect.

16.4 No waiver. Not enforcing a part of this Agreement is not a waiver of it.

16.5 Transfer. You may not transfer this Agreement. We may transfer it to a successor to our business.

16.6 Export. You must comply with the export control and sanctions laws that apply to your use of the Software.

17. Contact

Questions about this Agreement: support@seasill.com, or by post to [Placeholder: seller's legal name and postal address].