Privacy Policy for Waifu
Last Updated: April 2026
Introduction
Waifu ("we," "our," or "us") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our AI companion application.
Information We Collect
Personal Information
- Account Information: Email address and username when you create an account
- Profile Data: Optional profile preferences and customization settings
- Device Information: Device ID, operating system, and app version
Conversation Data
- Messages you exchange with your AI companion are stored only on your device — we do not upload or store them on our servers
- Conversation preferences and settings
Usage Data
- App features you use and frequency of use
- Session duration and interaction times
- Error logs and performance data
How We Use Your Information
We use the collected information to:
- Provide and maintain the Waifu service
- Personalize your AI companion experience
- Send important updates about the service
- Ensure safety and prevent abuse
- Comply with legal obligations
Data Storage and Security
Your chat history is stored locally on your device only. We do not upload, store, or back up your conversations on our servers. When you clear the app data or uninstall the app, your conversation history is permanently deleted.
For the limited account-level information we do store (such as your email and profile), we implement industry-standard security measures including:
- Encryption in transit (HTTPS/TLS) for all network requests
- Regular security audits and updates
- Limited access controls for our staff
- Secure data centers with physical security measures
Data Sharing
We do not sell or rent your personal information. We may share data only in these circumstances:
- With your explicit consent
- To comply with legal obligations or court orders
- To protect our rights, privacy, safety, or property
- With service providers who assist in operating our app (under strict confidentiality agreements)
Your Rights and Choices
You have the right to:
- Access your personal data
- Request correction of inaccurate data
- Delete your account and associated data
- Export or delete your conversation history directly from your device
- Opt-out of promotional communications
AI and Machine Learning
Waifu uses AI to generate responses. Please note:
- AI responses are generated in real-time and not pre-scripted
- Your conversations are not used to train or improve AI models — since chat history is stored only on your device, we have no access to it
- We use automated systems to detect and prevent inappropriate content
- AI companions cannot access external websites or your device data
Children's Privacy
Waifu is not intended for users under 17 years of age. We do not knowingly collect personal information from children under 17. If you believe we have collected information from a minor, please contact us immediately.
International Data Transfers
Your information may be transferred to and processed in countries other than your own. We ensure appropriate safeguards are in place to protect your data in accordance with this Privacy Policy.
Changes to This Policy
We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page and updating the "Last Updated" date.
Contact Us
If you have questions about this Privacy Policy, please contact us at:
- Email: wei@weic.ai
- Address: Run aWei Inc.
- Support: In-app support chat
California Privacy Rights
California residents have additional rights under the CCPA, including the right to know what personal information is collected, used, shared, or sold. For more information about your CCPA rights, please contact us.
European Privacy Rights
If you are located in the European Economic Area (EEA), you have additional rights under GDPR, including the right to data portability and the right to lodge a complaint with your local supervisory authority.