Version: v1.5 | Effective: October 19, 2026
Din Academy ("we", "us", or "our") is an AI-powered personalized learning platform available through www.dincat.ai and our mobile PWA application. Our service is designed for users in Japan, English-speaking regions worldwide, and overseas Chinese-speaking communities.
We are committed to protecting your personal information and handle it in accordance with Japan's Act on the Protection of Personal Information (APPI) and other applicable data protection laws. Please read this policy carefully before using our service.
Collected at registration: email address (Magic Link login) or Google account information (OAuth login), your chosen nickname, and age group.
Your conversation history with Din Cat (including your input messages and AI-generated responses), capability assessment records, learning memories (summaries of your learning preferences and progress), and learning project data.
Payment processing is handled by a third-party service (Stripe). We do not store your credit card numbers, CVV, or bank account information. We only retain transaction records (order numbers, amounts, and subscription status).
Minor's personal information: Learning data, conversation content, and capability assessment results for Seedling (ages 6–12) and Planner (ages 13–18) users.
Family background information: If you voluntarily share information about your family's financial situation during conversations, Din Cat may record it as a structured summary to provide more personalized learning guidance. Such information is stored in encrypted form.
To troubleshoot login/trial issues and monitor product health, we collect through server logs and product analytics: browser User-Agent (used to distinguish device/browser type, not for device fingerprinting or ad tracking), a country/region inferred from your network location (we do not collect precise geolocation or retain your full IP address), the page path and language you visited, the website you came from (only its domain name, e.g. google.com — not the full address or any search terms), and an anonymous device identifier (stored locally in your browser, used to de-duplicate behavior for signed-out sessions).
This data is used only for product analytics, troubleshooting, and security purposes (such as detecting automated abuse). It is never used for advertising and is not linked to your account identity for profiling.
If you sign up in the app to test the Android version (Google Play), we collect the Google account email address you enter. Nothing is collected if you do not sign up.
We use your personal information to: provide, maintain, and improve Din Academy's services; deliver personalized AI learning experiences (including cross-session memory, capability assessment, and learning path recommendations); process payments and manage subscriptions; ensure platform security (including content moderation and anomaly detection); register users who sign up as Google Play testers; and fulfill legal obligations.
Din Academy uses multiple AI large language model providers to power Din Cat's intelligent conversation capabilities. When you interact with Din Cat, your message content, related learning memories, and system prompts are sent to the corresponding AI provider for processing.
When you use the Deep Analysis feature, the learning data needed to generate your report is sent to Anthropic (Claude). Nothing is sent to Anthropic if you do not use this feature.
| Provider | Processing Location | Data Sent | Restrictions |
|---|---|---|---|
| DeepSeek | China | Conversation content, system prompts, learning memory summaries, RAG results | Used only for generating responses. Not for model training |
| Google Gemini | USA / Global | Same as above | Same as above |
| Anthropic Claude | USA | Only when you use Deep Analysis: nickname, age group, capability assessment records, learning projects and milestones, messages from your most recent conversation (up to 30), and any note you add | Used only for generating analysis reports. Not for model training |
Your personal information may be transferred to and processed in the following countries/regions:
| Service Type | Location | Provider | Purpose |
|---|---|---|---|
| Database Storage | AWS (overseas) | Supabase | User data, conversation history, capability records |
| AI Conversation | China / USA | DeepSeek / Google | Intelligent conversation generation |
| Deep Analysis | USA | Anthropic | Generating Deep Analysis reports |
| Android Tester Registration | USA / Global | Google (Google Play) | Only if you sign up: adding the Google account email you enter to the tester list |
| Payment | USA / Global | Stripe | Subscriptions and payments |
| Web Hosting | Global edge | Vercel | Web hosting and server-side processing |
In accordance with APPI Article 28, before providing your personal data to third parties in foreign countries, we will provide you with information about the personal information protection systems of those countries and obtain your explicit consent.
United States (Supabase/AWS, Google Gemini, Google Play, Anthropic Claude, Stripe, Vercel): The US does not have a comprehensive federal personal information protection law, but each provider has committed to appropriate data protection measures through their terms of service or DPAs.
China (DeepSeek): China has enacted the Personal Information Protection Law (PIPL), establishing a comprehensive personal information protection framework. DeepSeek, as a Chinese domestic company, is subject to this law. We further constrain their data processing behavior through our DPA.
For users outside Japan, we will comply with the applicable laws of your region. Regardless of your location, we will clearly inform you of data transfer destinations during registration and obtain your consent.
Din Academy's Seedling (ages 6–12) and Planner (ages 13–18) services are designed for minors. We implement the following special protections:
Users under 16 must have a parent or guardian create their account and explicitly consent to this privacy policy. Parental verification is conducted via Magic Link authentication sent to the parent's email address. Users aged 16–18 may register on their own, but we recommend and provide a parental linking feature.
For minor users, we collect only the minimum information necessary to provide learning services. We do not proactively collect sensitive information such as family financial status or health conditions. If voluntarily shared during conversations, related memories are stored in encrypted form.
Din Cat performs real-time content moderation for conversations with minor users. When potential psychological crisis signals are detected, the system layer automatically displays a professional mental health resource card. This mechanism completely bypasses AI judgment to ensure timeliness and accuracy.
To exercise any of these rights, please contact us at [email protected]. We will respond within 14 business days of receipt.
We use essential technical cookies to maintain your login status and language preference. We do not use advertising cookies or third-party tracking cookies. Specifically: Supabase authentication cookies (HttpOnly + Secure + SameSite=Lax) and NEXT_LOCALE language preference cookie.
We may update this privacy policy from time to time. When significant changes occur, we will notify you via in-app notification or email. Updates to the AI provider list (Appendix A) will also be communicated in the same manner. Your continued use of our service constitutes acceptance of the updated policy.
If you have any questions about this privacy policy or wish to exercise your personal information rights, please contact us:
Email: [email protected]
Website: https://www.dincat.ai