Privacy Policy
Version 1.0 · Effective 2026-04-24
1. Introduction
Welcome to Honmani Japanese(the “Service”), operated by Ryusei Maeda (Honmani!, sole proprietor, Japan)(“we,” “us,” or “our”). This Privacy Policy explains how we collect, use, share, and protect your personal information when you use our Service. By using Honmani Japanese, you agree to the practices described in this policy.
Effective date: 2026-04-24
Last updated: 2026-04-24
2. Information We Collect
2.1 Information you provide
- Account data: email address, display name, password (hashed)
- Payment data: billing information processed by Stripe (we do not store your credit card number)
- User-generated content: saved vocabulary, bookmarks, notes, quiz responses
2.2 Information collected automatically
- Usage data: articles read, quiz scores, time spent, streak data
- Technical data: IP address, browser type, device type, operating system, referring URL
- Cookies and tracking technologies: see Section 6
2.3 Information from third parties
- OAuth login providers (Google): email, name, profile picture if you sign in via Google
3. How We Use Your Information
We use your data to:
- Provide the Service: account creation, content delivery, progress tracking
- Communicate with you: service updates, marketing (opt-in), responses to inquiries
- Improve the Service: analytics on content usage, feature testing
- Process payments: via Stripe
- Display advertising: for Free tier users, served via Google AdSense (when enabled)
- Comply with legal obligations: tax, consumer protection, data protection law
4. Third-Party Services
We share limited data with the following trusted partners:
| Service | Purpose | Data shared |
|---|---|---|
| Supabase | Database, auth, storage | Email, account, usage data |
| Stripe | Payment processing | Billing, transactions |
| Vercel | Hosting | IP, usage logs |
| Google Analytics | Usage analytics (when enabled) | Anonymized usage, IP |
| Google AdSense | Ads (Free tier, when enabled) | Cookies, device info |
| Resend | Transactional email | Email address |
5. International Data Transfer
Honmani Japanese may transfer your data to servers located outside your country (e.g., United States, EU). We use services with Standard Contractual Clauses (SCCs) and appropriate safeguards compliant with GDPR, APPI (Japan), and CCPA (California).
6. Cookies & Tracking
We use the following types of cookies:
- Essential cookies: for login sessions (cannot be disabled)
- Analytics cookies: Google Analytics (when enabled)
- Advertising cookies: Google AdSense (Free tier only, when enabled)
EU/UK users will see a cookie consent banner on first visit. You can withdraw consent at any time.
7. Data Retention
- Account data: retained while your account is active + 30 days after deletion
- Payment records: retained for 7 years for tax compliance (Japanese Commercial Code)
- Usage data: retained for 24 months (then aggregated or anonymized)
- Email lists: retained until you unsubscribe
8. Your Rights
Depending on your jurisdiction, you have the right to:
- Access: request a copy of your data
- Rectification: correct inaccurate data
- Deletion: the right to be forgotten
- Portability: receive your data in machine-readable format
- Object: opt out of marketing or certain processing
- Restrict: pause data processing
- Lodge a complaint: with your local data protection authority
To exercise any right, email us at privacy@honmanijapanese.com.
9. Children's Privacy
Honmani Japanese is not intended for children under 13 (or 16 in certain EU countries). We do not knowingly collect data from minors. If you believe a minor has provided information, please contact us and we will delete it promptly.
10. Security
We use industry-standard security measures:
- TLS/SSL encryption for all traffic
- Password hashing (bcrypt or equivalent)
- Role-based access controls
- Regular security audits
However, no system is 100% secure. In the event of a data breach, we will notify affected users and authorities as required by law.
11. Changes to This Policy
We may update this Privacy Policy. Material changes will be notified via email or in-app notice at least 30 days before taking effect. Continued use after the effective date constitutes acceptance.
12. Contact Us
Questions, concerns, or requests?
- General email: hello@honmanijapanese.com
- Privacy requests: privacy@honmanijapanese.com
- Operator: Ryusei Maeda (Honmani!, sole proprietor, Japan)
- Postal address: Available on request via hello@honmanijapanese.com