Privacy Policy

Ren Shinkai ("Company," "we," "us," or "our") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use the Kuramo mobile application (the "Service").

Please read this Privacy Policy carefully. By using the Service, you agree to the collection and use of information in accordance with this Privacy Policy.

1. Information We Collect

We collect information that you provide directly to us, information we obtain automatically when you use the Service, and information from third-party sources.

1.1 Information You Provide

Account Information:

• Anonymous login: Unique user ID (UID) automatically generated by Firebase Auth
• Google Sign-In: Email address, display name, profile photo URL
• Apple Sign-In: Email address (optional), display name (optional)

User Content:

• Shopping lists (list names, item names, categories)
• Recipes (title, ingredients, instructions, genre, main ingredients, features, URLs, images)
• Templates (template names, item names, categories)
• Favorites (favorited items)
• Category settings (custom category names, sort order)

Subscription Information:

• Plan type (Free/Premium)
• Subscription status (active/expired/cancelled)
• Purchase date and expiration date
• Auto-renewal status
• Purchase platform (App Store/Play Store)

1.2 Information Collected Automatically

Usage Data:

• AI feature usage (number of uses, input/output tokens)
• Feature usage patterns (recipe analysis, categorization, etc.)
• App launch frequency and session duration

Device Information:

• Device type (iOS/Android)
• Operating system version
• App version
• Language settings

Firebase Analytics Data:

• Statistical information about app usage
• Crash reports
• Performance data

Advertising Data (Free Plan users only):

• Advertising identifiers (iOS: IDFA, Android: AAID)
• Ad impressions and clicks
• Ad performance metrics

2. How We Use Your Information

2.1 Service Provision and Operation

• User authentication and account management
• Storing and displaying shopping lists, recipes, templates, and other data
• Providing AI features (recipe analysis, automatic categorization)
• Enabling family sharing functionality
• Managing subscriptions and processing payments

2.2 Service Improvement and Development

• Analyzing usage patterns to improve service quality
• Developing and testing new features
• Optimizing user experience
• Detecting and fixing bugs

2.3 Customer Support

• Responding to inquiries
• Providing troubleshooting and technical support
• Sending important service notifications

2.4 Advertising (Free Plan users only)

• Displaying personalized ads via Google AdMob
• Measuring and optimizing ad effectiveness

3. How We Share Your Information

3.1 General Principle

We do not share your personal information with third parties except in the following circumstances:

• With your consent
• To comply with legal obligations
• To protect rights, property, or safety
• In connection with a business transfer (merger, acquisition, etc.)

3.2 Third-Party Service Providers

Firebase (Google LLC)

Purpose: Authentication, database, storage, analytics

Privacy Policy: https://firebase.google.com/support/privacy

OpenAI (OpenAI, Inc.)

Purpose: AI features (recipe analysis, automatic categorization)

Privacy Policy: https://openai.com/policies/privacy-policy

RevenueCat (RevenueCat, Inc.)

Purpose: Subscription management and payment processing

Privacy Policy: https://www.revenuecat.com/privacy

Google AdMob (Google LLC)

Purpose: Ad delivery (Free Plan users only)

Privacy Policy: https://policies.google.com/privacy

3.3 Important Principle

4. Data Security

We implement appropriate technical and organizational measures to protect your personal information:

• Secure authentication via Firebase Authentication
• Encrypted communications using TLS/SSL
• Data access control via Firebase Security Rules
• Strict database access permission management

5. Data Retention

• Account information: Until account deletion
• User content: Until deleted by user or account deletion
• Subscription information: 7 years from last transaction (legal requirement)
• Usage data: 2 years from collection
• Log data: 90 days from collection

6. Your Rights and Choices

6.1 Account Deletion

You may delete your account at any time. Deleting your account will permanently remove all your data.

How to Delete Account: Service → Settings → Account → Delete Account

6.2 Opt-Out of Personalized Ads

iOS: Settings → Privacy → Advertising → Enable "Limit Ad Tracking"

Android: Settings → Google → Ads → Enable "Opt out of Ads Personalization"

6.3 Ad-Free Experience

Upgrading to Premium Plan removes all ads and stops AdMob data collection.

7. Children's Privacy

The Service is not intended for children under 13 years of age. We do not knowingly collect personal information from children under 13.

8. International Users

The Service is primarily intended for users in Japan but is available internationally. Your information may be transferred to and stored in Japan, the United States, or other countries where our service providers operate.

8.1 European Economic Area (EEA) Users

If you are located in the EEA, you have certain rights under the GDPR including rights to access, rectification, erasure, and data portability.

8.2 California Users

If you are a California resident, you have rights under the CCPA. We do not sell your personal information.

9. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. We will notify you of material changes by posting the updated Privacy Policy in the Service at least 30 days before changes take effect.

10. Contact Us

Additional Resources

• Firebase (Google): https://firebase.google.com/support/privacy
• OpenAI: https://openai.com/policies/privacy-policy
• RevenueCat: https://www.revenuecat.com/privacy
• Google AdMob: https://policies.google.com/privacy
• Apple Privacy Policy: https://www.apple.com/legal/privacy/