Privacy Policy

Last Updated: September 12, 2025

1. Information We Collect

1.1 Account Information

When you create an account, we collect:

• Email address (for authentication and account recovery)
• Username or display name (optional)
• Profile preferences and settings
• Subscription status and billing information (processed securely through Google Play)

1.2 Conversation Data

To provide personalized AI companion services with memory capabilities:

• Messages you send to your AI companion
• Memories and facts extracted from conversations
• Mood indicators and emotional context
• Roleplay scenarios and story continuations
• Preferences and personality settings for your AI companion

1.3 Usage Information

We automatically collect:

• Device information (type, operating system, app version)
• Usage patterns and feature interactions
• Session duration and frequency
• Error logs and performance data
• Firebase Analytics data (screen views, app usage patterns) - used for testing and improving app experience

1.4 Payment Information

For premium subscriptions through Google Play Billing:

• Google Play account identifier
• Purchase tokens for subscription verification
• Subscription tier and status
• Transaction IDs (no credit card details are stored by us)

2. How We Use Your Information

2.1 Core Service Functionality

• Provide personalized AI companion interactions
• Maintain conversation context and memories
• Enable mood detection and dynamic responses
• Support immersive roleplay experiences
• Process natural language and generate responses

2.2 Service Improvement

• Enhance AI response quality and relevance
• Improve memory and context understanding
• Fix bugs and optimize performance
• Develop new features based on usage patterns

2.3 Account Management

• Authenticate your access to the service
• Manage subscription and billing through Google Play
• Send important service updates and notifications
• Provide customer support

3. Google Play Integration

Nyther uses Google Play Billing for subscription management. This means:

• Payment processing is handled entirely by Google Play
• We never receive or store your credit card information
• Google Play manages subscription renewals and cancellations
• Refunds are processed according to Google Play policies
• Your Google account is used for purchase authentication

4. Data Storage and Security

4.1 How We Protect Your Data

• End-to-end encryption for sensitive conversation data
• Secure cloud storage with regular backups
• Access controls and authentication requirements
• Regular security audits and updates
• Compliance with industry-standard security practices

4.2 Data Retention

• Active account data is retained while your account is active
• Deleted conversations are permanently removed within 30 days
• Account deletion requests are processed within 30 days
• Some anonymized usage data may be retained for analytics

5. AI and Machine Learning

Your conversations with Nyther involve AI processing:

• We use OpenAI GPT and Google Gemini APIs for response generation
• Conversations are processed to extract memories and context
• Mood detection algorithms analyze emotional tone
• Your data is not used to train external AI models
• AI processing is done in real-time and not stored by third parties

6. Your Privacy Rights

6.1 You Have the Right To:

• Access: Request a copy of your personal data
• Correct: Update or correct inaccurate information
• Delete: Request deletion of your account and data
• Export: Download your conversation history and memories
• Control: Manage privacy settings and data sharing preferences
• Opt-out: Disable specific features or data collection

6.2 Memory Controls

Nyther provides granular control over your AI companion's memory:

• Toggle memory on/off for specific conversations
• Delete individual memories or facts
• Clear all memories while keeping your account
• Export memories for personal backup

7. Data Sharing and Third Parties

7.1 We Do Not Sell Your Data

Nyther never sells, rents, or trades your personal information to third parties for marketing purposes.

7.2 Limited Sharing Scenarios

We may share data only in these specific circumstances:

• Service Providers: With trusted partners who help operate our service (hosting, analytics)
• Legal Requirements: When required by law or to protect rights and safety
• Business Transfers: In case of merger, acquisition, or asset sale
• With Consent: When you explicitly authorize sharing

7.3 Third-Party Services

Nyther integrates with:

• Google Play Services: For authentication and billing
• OpenAI: For GPT model API (conversations are not stored by OpenAI)
• Google Cloud: For Gemini API and cloud infrastructure
• Analytics Providers: For app performance monitoring (anonymized data only)

8. Children's Privacy

Nyther is not intended for users under 18 years of age. We do not knowingly collect personal information from children. If we discover that a child under 18 has provided us with personal information, we will delete such information from our systems.

9. International Data Transfers

Your information may be transferred to and processed in countries other than your country of residence. These countries may have data protection laws different from your country. We ensure appropriate safeguards are in place to protect your information.

10. California Privacy Rights (CCPA)

California residents have additional rights under the California Consumer Privacy Act (CCPA):

• Right to know what personal information is collected
• Right to know if personal information is sold or disclosed
• Right to opt-out of the sale of personal information
• Right to non-discrimination for exercising privacy rights

11. European Privacy Rights (GDPR)

If you are in the European Economic Area (EEA), you have additional rights under GDPR:

• Legal basis for processing your data
• Right to data portability
• Right to restriction of processing
• Right to object to processing
• Right to lodge a complaint with supervisory authorities

12. Updates to This Policy

We may update this Privacy Policy from time to time. We will notify you of any material changes by:

• Posting the new Privacy Policy on this page
• Updating the "Last Updated" date
• Sending an email notification for significant changes
• Displaying an in-app notification

13. Contact Us

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