Privacy Policy
This policy explains how Kenta Yamamoto, a sole proprietor in Japan ("we" or "us"), handles personal information in Exact 3D Video at exact3dvideo.com (the "Service"). We try to hold as little personal information as we can. We do not sell your personal information, and we do not share it for targeted advertising.
1. Information we collect
We get this information from you, from your browser or device, from the login service you use, and from Stripe.
- Login information: the login service you used (such as Google or Microsoft) and the identifier it issues. We do not store your name, email address, or profile picture in our database. At sign-in we may compare your email address with our administrator and invitation lists without recording it. If we give credits limited to one per person, we keep a hash made from your email address, not the address itself, so the same person does not receive them twice.
- Your content: chat messages, attached documents, CAD files, images, and text, and the storyboards, production data, and videos made from them.
- Support messages: what you write in the support form and our replies, with your Account ID and, if you send it from a chat, its Chat ID.
- Payment records: amounts, dates, credits purchased, and the country of your billing address, linked to your Account ID. Stripe handles your card details, and we do not hold them. The email address you enter for a receipt goes to Stripe, and we may use it to handle a payment inquiry or refund.
- Usage history and server logs: what you ran and the credits used. Server logs include your IP address and browser type.
- How you first reached us: the referring site's name, ad or campaign identifiers (UTM), the first page you opened, any invite code, and the analytics identifier described below. We record this once, when you sign up.
- Public page analytics (our own): the page viewed, referring site's name, device type (such as phone or computer), language setting, your browser's time zone (we use it and your language setting to estimate your country, and we do not use your IP address for this), time on the page, how far you read, how much of a sample video you watched, the buttons you pressed, and a random identifier stored on your device. Public pages are our landing, example, use case, guide, legal, and shared video pages. These records do not include your IP address or browser type. If you sign in, we link them to your sign-up source in our totals.
- Google Analytics (only when we have it turned on): pages viewed, referring site, device and browser type, approximate region, and cookie identifiers, collected on public pages.
- Invitations, referrals, and sharing: which invite link you signed up through, the account that referred you, referral rewards, the share links you create, and their play counts.
We do not ask for sensitive personal information. If you include it in a chat or attachment, it is processed like your other content, so please leave it out unless the video truly needs it.
2. How we use it
- To make and deliver videos, calculate and bill charges, and provide invitations, referral rewards, and share links.
- To prevent abuse, investigate defects, answer inquiries, and comply with the law.
- To improve the Service, analyze usage, compare page versions (A/B tests), and measure advertising. We total this information in a form that does not identify individuals.
3. Who receives it
These companies receive information so we can provide the Service.
| Google LLC (Google Cloud) | Purpose: AI processing, data storage, usage analysis, attachment conversion, and 3D rendering. Location: US company. Data is stored in Japan (Tokyo), and rendering runs in the Netherlands or Belgium. AI processing runs automatically in a region where the model is available, so the country cannot be specified in advance (the US, Europe, Asia, and others). Information: chat content, attachments, narration scripts, production data, videos, and usage records (for analysis, stored in Japan with your Account ID replaced by a code). Handling: processed only under our instructions and not used to train AI. When Claude runs on Google Cloud, this data is not shared with Anthropic. |
|---|---|
| Google LLC (Firebase Authentication) | Purpose: login. Location: United States. Information: what the login service sends. For Google and Microsoft, this includes your email address and name. Handling: processed and recorded only to provide login. Our own database keeps only the login identifier and login method. |
| Anthropic, PBC | Purpose: AI processing when we use Claude directly from Anthropic. Location: United States (requests may be processed in other regions). Information: chat content and attachments. Handling: generally deleted within 30 days, or kept up to 2 years if flagged for a possible usage policy violation. Not used to train AI. |
| Stripe, Inc. | Purpose: payments. Location: United States. Information: what is needed for payment. Your card details go directly to Stripe and do not pass through us. Handling: under Stripe's terms and privacy policy. |
| Google LLC (Google Analytics), when turned on | Purpose: analytics for public pages, not shared video pages or signed-in screens. Location: United States. Information: page URL, referring site, device and browser type, approximate region, and cookie identifiers. We do not send login information, chat content, or video titles. Handling: under Google's policies. Advertising cookies are turned off. See Section 7. |
We may also disclose information when the law or legal process requires it, to protect people's rights or safety, or to a successor if we transfer the Service. We do not share personal information with third parties for their direct marketing.
4. Where your information goes
We are in Japan, and Japan's Act on the Protection of Personal Information applies to our handling of personal data, including data about people outside Japan. Your information is stored in Japan and may be processed in the United States, the Netherlands, Belgium, and the other countries described in Section 3, whose laws may differ from those where you live. When you start using the Service, we ask for your consent to these transfers. To support that consent:
- United States: there is no comprehensive federal privacy law. Privacy is protected by federal laws for specific sectors and by state laws, such as California's consumer privacy law.
- European Union: the General Data Protection Regulation applies. Japan and the EU recognize each other's level of data protection as adequate.
- Our vendors: their terms limit use to the agreed purposes and require safeguards such as encryption and access controls, and they hold third-party security certifications such as ISO/IEC 27001 and SOC 2.
- Japan's Personal Information Protection Commission publishes information on foreign legal systems (in Japanese).
5. How long we keep it
| Attachments and outputs (videos, review images, production data) | Deleted automatically 30 days after they are saved |
|---|---|
| Videos you choose to keep (video file and thumbnail) | Until the date you chose, then deleted automatically. You can delete a video at any time. |
| Chats and project records | Kept to provide the Service, and deleted when you ask or when you close your account |
| Support messages | Until you close your account |
| Public page analytics records | 25 months, then deleted automatically. Daily totals that do not identify anyone remain. |
| Server logs, including IP address and browser type | 30 days, for troubleshooting and preventing unauthorized access |
| Credit purchase and usage records | 7 years as required by law, without names, email addresses, or titles |
When you close your account from the Account page, we immediately delete your projects, conversations, attachments, videos (including kept videos), share links, support messages, and login account.
6. Security
- We encrypt data in transit and in storage.
- We limit who can access personal data and what they can do, and we log that access.
- Each production and rendering run takes place in its own separate environment.
- We take into account the data protection systems of the countries where data is handled.
No system is perfectly secure, and we cannot promise that a breach will never happen.
7. Analytics, cookies, and browser signals
- Our own analytics stores a random identifier and a visit marker in your browser's local storage. It does not use cookies.
- Do Not Track and Global Privacy Control: if your browser sends either signal, our own analytics does not use an identifier and only counts the visit.
- Google Analytics, when turned on, uses cookies. If your browser sends either signal, we do not load it. You can also stop it by blocking cookies in your browser or using Google's opt-out add-on.
- When Google Analytics is turned on, Google may collect information about your activity over time and across different websites under its own policies. We do not otherwise allow other parties to collect that kind of information through the Service. Login services and Stripe collect information on their own pages under their own policies.
8. Your choices and rights
- Export: use Export data on the Account page to get your profile, credit and usage history, projects, conversations, and lists of attachments and videos as a file.
- Delete: delete a video at any time, or use Close your account on the Account page.
- Other requests: you can ask us to tell you how we use your personal data, give you access to it, correct or add to it, delete it, stop using it, stop providing it to third parties, or show our records of providing it to third parties. Email service@3dcgdouga.com.
- Verification: because we do not store your email address, we confirm your identity using your Account ID, Chat ID, login method, or payment receipt.
- Timing and appeals: we respond without undue delay and within 45 days. We may extend that once by 45 days if we tell you why. If we decline, you can appeal by emailing us within 60 days, and we will answer in writing within 60 days. If your appeal is denied, you can contact your state attorney general.
- Selling and targeted advertising: we do neither, so there is nothing to opt out of. We will not treat you differently for using these rights.
We offer these rights to all users, wherever they live.
9. When we look at your data for support
When you send us a Chat ID, we check that chat's production records (status, errors, and credits used). When needed to find the cause of a defect, and only to that extent, we also check the chat conversation and the AI's work records.
10. Share links
A share link makes that video public to anyone with the link, without signing in. Share pages are not listed in search engines. You can stop sharing at any time.
11. Children
The Service is for people 18 and older. We do not knowingly collect personal information from anyone under 18, including children under 13. If we learn that we have, we will delete it. If you believe a minor has used the Service, please email us.
12. Changes to this policy
We will post any change on this page and update the effective date. We will tell you about a material change in the Service, and we will ask for your consent again where the law requires it.
13. Contact
Kenta Yamamoto (sole proprietor)
Grand-K Kyoto Ekimae Bldg. 201, 85-2 Koinari-cho, Shimogyo-ku, Kyoto 600-8208, Japan
Email: service@3dcgdouga.com
For questions about the Service, use Contact Support at the bottom of the chat screen or on the Account page. We reply in the app.
Effective date: November 9, 2026