Privacy Policy

Effective date: August 21, 2026

Hanasu² ("us", "we", or "our") operates the Hanasu² website and the Hanasu² mobile application (the "Service"). This page explains what information the Service handles, why, and the choices you have.

Hanasu² is a language practice app. You speak with an AI character and receive coaching from an AI tutor. Making that work requires processing your voice and your conversation text, and this policy describes exactly how that happens.

What We Collect and Why

Voice Recordings

When you record a message, your audio is sent to our server and forwarded to a speech recognition provider to be converted into text. Recordings are processed to provide this transcription and are not used to build a voice profile of you or to train our own models.

Conversation Content

The text of your conversations, including transcripts of what you said, is sent to our server and forwarded to third-party AI providers to generate the character's replies, the tutor's feedback, and the spoken audio you hear. Your conversation history is stored on your device, not on our servers. If you delete a chat in the app, or delete the app, that history is gone.

Settings

Your language choices and app preferences are stored on your device so the app works the way you set it up.

Usage and Diagnostic Data

Like most online services, our server may log basic technical information such as IP address, request timestamps, and diagnostic data. We use these logs to keep the Service running, prevent abuse, and fix problems. On the website, we use privacy-friendly analytics to understand aggregate traffic.

What We Do Not Do

• We do not require an account, and we do not collect your name, email address, or contacts to use the app.
• We do not sell your personal data.
• We do not show third-party advertising.
• We do not listen to your microphone in the background. Audio is only captured while you are actively recording a message.

Service Providers

We rely on third-party AI providers for speech recognition, language model responses, and speech synthesis, and on hosting providers for our server and website. These providers process your data only to deliver their part of the Service. All AI requests go through our server, so providers receive the conversation content needed to respond but not your identity.

Transfer of Data

Your information may be transferred to and processed on servers located outside of your state, province, or country, where data protection laws may differ from those in your jurisdiction. We take reasonable steps to ensure your data is treated securely and in accordance with this policy wherever it is processed.

Security of Data

Data sent between the app and our server is encrypted in transit. No method of transmission or storage is completely secure, and while we use commercially reasonable safeguards, we cannot guarantee absolute security.

Disclosure of Data

We may disclose data in the good faith belief that doing so is necessary to comply with a legal obligation, protect the rights or property of Hanasu², prevent or investigate possible wrongdoing in connection with the Service, protect the personal safety of users or the public, or protect against legal liability.

Children's Privacy

The Service is not directed at anyone under the age of 13. We do not knowingly collect personal data from children. If you are a parent or guardian and believe your child has provided us with personal data, please contact us and we will take steps to remove it.

Your Choices

• You can delete any conversation in the app at any time, which removes it from your device.
• You can revoke microphone access in your device settings, though the app cannot function as a voice practice tool without it.
• You can contact us with any question or request about your data at the email below.

Changes to This Privacy Policy

We may update this Privacy Policy from time to time. We will post the new policy on this page and update the effective date at the top. You are advised to review this page periodically. Changes are effective when posted.

Contact Us

If you have any questions about this Privacy Policy, please contact us:

• By email: hi.pol.chen@gmail.com