Privacy Policy

Effective: April 10, 2026

This Privacy Policy explains how yaku ("we", "us", or "our") collects, uses, and protects information when you use our translation service at yakulang.com and the yaku command-line tool (collectively, the "Service").

Information We Collect

Account Information

When you sign in via a third-party provider (such as GitHub or Google), we receive your name, email address, and profile image from that provider. We do not access your password or other credentials stored with the provider.

Usage Data

We record aggregate usage metrics such as the number of requests you make per day and month. This data is used for enforcing usage limits and improving the Service.

Technical Data

When you interact with the Service, we may collect your IP address, browser user-agent string, and a device identifier. This information is used for security, abuse prevention, and rate limiting.

Translation Content

Text you submit for translation is sent to third-party AI service providers for processing. We do not permanently store the content of your translation requests after processing is complete.

How We Use Your Information

We use the information we collect to:

• Provide, operate, and maintain the Service
• Enforce usage limits and prevent abuse
• Protect the security and integrity of the Service
• Understand how the Service is used and improve it
• Communicate with you about service-related matters

Information Sharing

We do not sell your personal information. We share data only in the following circumstances:

• With third-party AI service providers to process your translation requests. These providers receive only the text you submit and necessary processing instructions — not your account information.
• With authentication providers (such as GitHub and Google) as part of the sign-in process.
• With our cloud infrastructure provider to host and deliver the Service.
• When required by law, or to protect the rights, safety, or property of yaku, our users, or the public.

Cookies

We use essential cookies solely for authentication and session management. We do not use tracking cookies, advertising cookies, or third-party analytics cookies.

Data Retention

Account information is retained for as long as your account is active. Aggregate usage data is retained for service operation purposes. Session data expires automatically. You may request deletion of your account and associated data at any time.

Your Rights

Depending on your jurisdiction, you may have the right to:

• Access the personal information we hold about you
• Request deletion of your account and personal data
• Request a copy of your data in a portable format
• Withdraw consent for optional data processing

To exercise any of these rights, please contact us at the address below.

Children's Privacy

The Service is not directed to children under 13. We do not knowingly collect personal information from children under 13. If you believe a child has provided us with personal information, please contact us so we can take appropriate action.

Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of material changes by posting the updated policy on this page with a revised effective date.

Contact Us

If you have questions about this Privacy Policy, please contact us at contact@yakulang.com.