Privacy Policy
& Terms of Service

Privacy Policy

This Privacy Policy describes how Download SIU ("we", "us", "our") collects, uses, stores, and protects information when you use the Download SIU desktop application (the "App", built with Electron and protected by our custom security system) and the website downloadsiu.com (the "Site"). By using the App or the Site, you accept the practices described here.

1. Information We Collect

We collect only the minimum information required to deliver your license, keep it tied to your computer, and prevent fraud:

• Identity and contact data: your name, email address, and phone number, provided by you when you purchase a plan or write to us through the contact form. We use it to deliver your license code by email and to provide support. The free trial collects none of this: it is activated from inside the App and sends only your computer's hardware code, so no name, email or phone is involved.
• Hardware identifiers: a 16-character hardware code (HW-ID) and a list of your computer's hardware components (such as CPU, motherboard, and memory). The App generates this locally and sends it only when activating or validating your license. It is used exclusively to bind your license to one (1) PC and to detect unauthorized sharing.
• Security and anti-abuse records: your IP address, security events reported by the App (for example, tampering attempts against the protected application files), and rate-limit records used to block brute-force attacks against our servers.
• Purchase and license history: the plan you bought (trial, monthly, annual, or lifetime), the amount paid, dates of purchase and expiration, and Stripe session identifiers used for payment verification and accounting.

2. What We Do NOT Collect

This is the most important part of our privacy promise:

• We never collect the URLs you paste into the App. The links you download from are processed 100% locally on your own computer by the open-source tools yt-dlp and FFmpeg embedded in the App. They are never sent to our servers.
• We never collect your download history, the titles, names, or content of the videos, series, or audio files you download.
• We never scan, read, or upload your personal files, documents, or media. Downloaded files are saved directly by you to the folder you choose.
• We do not use analytics, advertising trackers, or third-party tracking cookies on the Site.

3. How We Use Your Information

• To generate, deliver, and validate your license code.
• To bind each license to a single computer, as described in our Terms of Service.
• To add purchased time to your existing license when you renew (your remaining time is always respected and added to — never reduced).
• To send transactional emails: license delivery, purchase confirmation, and support replies.
• To prevent fraud, brute-force attacks, and unauthorized use of the App or our servers.
• To check for and deliver software updates from downloadsiu.com (when the App checks for updates, your IP address may appear in standard web server logs, like any visit to any website).

4. Legal Bases for Processing

We process your data because: (a) it is necessary to perform our contract with you (delivering and validating your license); (b) you gave consent by submitting the trial, purchase, or contact forms; (c) we have a legitimate interest in preventing fraud and protecting our software; and (d) we must meet legal and tax obligations for purchase records.

5. Who We Share Data With

We do not sell, rent, or trade your personal information. We share it only with the service providers strictly needed to operate:

• Stripe — payment processing (receives your email and payment details at checkout, under Stripe's own privacy policy; Stripe may set its own cookies during checkout).
• Our email/SMTP provider — to deliver license and confirmation emails.
• Our web hosting provider — which stores the license database and server logs on infrastructure located in the United States.

We may also disclose information if required by law, court order, or to protect our legal rights.

6. Cookies

The Site is a static website: it does not use tracking cookies, advertising cookies, or analytics cookies. The only third-party cookies you may encounter are those set by Stripe on its own checkout pages for fraud prevention, which are governed by Stripe's policies.

7. Data Retention

• License and purchase records are kept while your license is active and afterwards for the period required by tax and accounting laws.
• Security and rate-limit logs (including IP addresses) are rotated and deleted periodically; they exist only to protect the service.
• Contact form messages are kept only as long as needed to answer you.

8. How We Protect Your Data

• All traffic between the App, the Site, and our servers uses HTTPS encryption.
• License records are stored on a hardened server with strict access rules; configuration files and credentials are never publicly accessible.
• The App itself is protected by our custom security system: its program files are encrypted and integrity-verified. This system only manages the App's own protected and temporary files — it never deletes, modifies, or uploads your personal files.
• Payment data is handled exclusively by Stripe under PCI-DSS standards.

9. Your Rights

You may request at any time: access to the data we hold about you, correction of inaccurate data, deletion of your data (note: deleting license records makes your license unusable), or a copy/export of your data. Users in the European Economic Area (GDPR), the United Kingdom, and California (CCPA/CPRA) have these and additional statutory rights, which we honor for all users equally. To exercise any right, write to us through our Contact page.

10. Age Requirement

Download SIU is intended only for persons 18 years of age or older. We do not knowingly collect data from minors. If you believe a minor has provided us personal data, contact us and we will delete it.

11. International Users

Our servers and providers are located in the United States. By using the App or the Site from another country, you consent to the transfer and processing of your data in the United States as described in this policy.

12. Changes to This Policy

We may update this Privacy Policy from time to time. The "Last updated" date at the top of this page always shows the current version. Continued use of the App or Site after a change means you accept the updated policy.

Terms of Service

These Terms of Service (the "Terms") govern your use of the Download SIU desktop application and the downloadsiu.com website. By downloading, installing, activating, or using the App, you agree to these Terms. If you do not agree, do not use the App.

1. The Service

Download SIU is a desktop application for personal computers that allows you to download video and audio content from publicly accessible sources on the internet, process it locally on your own machine (using the embedded open-source tools yt-dlp and FFmpeg), and save it to a folder of your choice. The App is built with Electron and protected by a custom security system that encrypts and integrity-checks its own program files.

2. Eligibility

You must be 18 years of age or older to use the App or purchase a plan. By using the service you declare that you meet this requirement.

3. License Plans and Activation

• We offer paid plans (monthly, annual, and lifetime), as described on our Plans page.
• We also offer a free 5-day trial, activated from a button inside the App. It requires no account, no email and no payment card: the App sends only your computer's hardware code. Each computer may activate the trial once, after which a paid plan is required.
• Each purchase generates one unique, non-transferable license code, delivered instantly to your email.
• Each license may be activated on one (1) computer only. The license is bound to that computer's hardware identifier. A code already activated on another PC cannot be reused.
• You are responsible for keeping your license code confidential. Do not share it with anyone.

4. Payments

• Prices are shown in US dollars on the Plans page and are processed securely by Stripe.
• We never see or store your card details (see our Privacy Policy above).
• Your license code is delivered by email immediately after Stripe confirms your payment.

5. Refund Policy

Because licenses are digital goods delivered instantly by email, refund requests are reviewed on a case-by-case basis, at our sole discretion. If you experience a genuine problem — for example, a payment completed without receiving your license, or a technical issue that we cannot resolve — write to us through the Contact page and we will review your case individually and fairly.

6. Acceptable Use and Copyright

• The App is a neutral tool. You are solely responsible for the content you choose to download and for complying with the laws of your country and the terms of the websites you download from.
• Only download content that you have the legal right to download and store: your own content, content in the public domain, content with a license that permits downloading, or content for which you have the rights holder's permission.
• You may not use the App to infringe copyright, to illegally distribute protected content, or to circumvent technological protection measures where prohibited by law.
• We do not host, store, provide, or have any knowledge of the content you download — all downloads happen directly between your computer and the source site.

7. Prohibited Conduct

• Sharing, reselling, or publishing your license code.
• Attempting to activate one license on multiple computers.
• Reverse-engineering, decompiling, bypassing, or attacking the App's security system, the license system, or our servers.
• Using the App for any unlawful purpose.

Violation of these rules may result in license revocation without refund, and where appropriate, legal action.

8. Software Security System and Your Files

To protect the App from tampering and piracy, its program files are encrypted and verified at runtime. If the security system detects manipulation of the App itself, it may refuse to run and may delete only the App's own protected and temporary working files. The security system never deletes, modifies, reads, or uploads your personal files, downloads, or documents.

9. Updates

The App can automatically check downloadsiu.com for new versions. Updates may add features, fix bugs, or adjust how the App works. Continuing to use the App after an update means you accept these Terms as they read at that time.

10. Disclaimer of Warranties

The App is provided "as is" and "as available", without warranties of any kind, express or implied, including merchantability, fitness for a particular purpose, or uninterrupted operation. Third-party websites change constantly, and we do not guarantee that downloading will work on every site at all times.

11. Limitation of Liability

To the maximum extent permitted by law, we shall not be liable for any indirect, incidental, special, or consequential damages — including lost profits, lost data, or claims by third parties — arising from your use or inability to use the App. Our total liability shall never exceed the amount you actually paid for your current plan.

12. Indemnification

You agree to indemnify and hold us harmless from any claim, damage, or expense arising from your misuse of the App, your violation of these Terms, or your infringement of any third party's rights (including copyright).

13. Governing Law

These Terms are governed by the laws of the United States of America, without regard to conflict-of-law principles. Any dispute arising from these Terms or the service shall be resolved before the competent courts of the United States.

14. Changes to These Terms

We may update these Terms at any time. The version published on this page, with its "Last updated" date, is the one in force. Continued use of the App after a change constitutes acceptance.

WaterClean-SIU — App Notice & Responsible Use

This section applies specifically to WaterClean-SIU, our desktop application for Windows that removes watermarks and logos from video. WaterClean-SIU is published by the same team as Download SIU, and the Privacy Policy and Terms of Service above apply to it in full. The points below clarify how they apply to a watermark-removal tool. By installing, activating, or using WaterClean-SIU you accept both the general terms above and this section.

1. Your Videos Stay on Your Computer

WaterClean-SIU processes video 100% locally on your own PC, using the embedded open-source tool FFmpeg and, for AI Mode, a neural network (LaMa) run locally with ONNX Runtime. We never receive, upload, scan, or store:

• the videos you open, mark, or export;
• their file names, contents, thumbnails, or metadata;
• the watermarks or logos you remove or the ones you add.

2. One License, Shared With Download SIU

WaterClean-SIU uses the same license system as Download SIU. Activation sends only your computer's 16-character hardware code (HW-ID) and your license key, exactly as described in the Privacy Policy above. Because the license is tied to your PC, a single license activates both WaterClean-SIU and Download SIU on the same computer — there is no separate purchase and no separate personal data collected for WaterClean. The free 5-day trial is activated from inside the App and, as with Download SIU, sends only the hardware code — no name, email, or phone.

3. Updates

To keep you on the latest version, WaterClean-SIU periodically checks https://downloadsiu.com/updates/water-clean/ for a newer release and, with your confirmation, downloads and installs it. As with any web request, your IP address may appear in standard server logs during that check. The App does not send any information about your videos during an update.

4. Responsible Use — Your Responsibility

WaterClean-SIU is a neutral editing tool. A watermark, logo, or channel bug is often a mark of ownership or attribution, and removing it can have legal consequences. You are solely responsible for how you use the App and for the videos you edit with it.

• Use WaterClean-SIU only on material you own or have permission to edit: your own recordings, footage you have licensed, videos carrying your own former logo, or content for which you hold the rights owner's explicit permission.
• Do not remove watermarks, logos, or attribution from someone else's video in order to re-upload, redistribute, monetize, or pass it off as your own. Doing so may infringe copyright, trademark, moral rights, or unfair-competition laws in your country.
• Do not use the App to remove security marks, forensic watermarks, or notices whose removal is prohibited by law or by the terms under which you received the content.
• You are responsible for complying with the laws of your country and with the terms of any platform or agreement that applies to the content you edit.

5. Age and Acceptance

WaterClean-SIU is intended only for persons 18 years of age or older. By using it you confirm that you meet this requirement and that you accept this section together with the Privacy Policy and Terms of Service on this page.