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Privacy Policy for NihongoFlow.com

Effective Date: July 27, 2025 Last Updated: July 27, 2025

1. Introduction

Welcome to NihongoFlow.com ("NihongoFlow," "we," "us," or "our"). We are committed to protecting your privacy. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our website and services (collectively, the "Platform"). Our goal is to provide an effective AI-powered Japanese language learning experience while being transparent about our data practices.

Please read this Privacy Policy carefully. By using our Platform, you agree to the collection and use of information in accordance with this policy. If you do not agree with the terms of this privacy policy, please do not access the site.

2. Information We Collect

We may collect information about you in a variety of ways. The information we may collect on the Platform includes:

A. Information You Provide to Us

  • Account Information: When you register for an account, we collect personal information such as your name, email address, and a hashed password. If you register using a third-party service like Google, we will collect the information provided by that service, such as your name, email address, and public profile information.
  • User-Generated Content: We collect the data you create and manage on our Platform. This includes:
    • Skills: Titles and tags for skills.
    • Vocabulary Lists: Titles, tags, and the words.
    • Folders: The organizational structure you create for your content.
  • AI Interaction Data: We collect the content you generate while using our AI-powered practice features:
    • Chat Conversations: Text-based messages you send to and receive from our AI chat assistant.

B. Information We Collect Automatically

  • Usage Data: We automatically collect information when you access and use the Platform. This may include your IP address, browser type, operating system, device information, the pages you visit, the features you use, the time and date of your visits, and other diagnostic data.
  • Progress and Statistics: We track your learning activity to provide you with progress metrics. This includes skill-specific progress, the number of chat messages sent/received, and the total number of conversations.
  • Cookies and Tracking Technologies: We use cookies and similar tracking technologies to track activity on our Platform and hold certain information. You can instruct your browser to refuse all cookies or to indicate when a cookie is being sent. However, if you do not accept cookies, you may not be able to use some portions of our Platform.

3. How We Use Your Information

We use the information we collect for various purposes, including to:

  • Provide, Operate, and Maintain our Platform: Authenticate users, display your learning content, and enable core features.
  • Power and Personalize Your Learning Experience: Use your selected skills and vocabulary lists to tailor AI chat conversations.
  • Track and Display Your Progress: Provide you with statistics and visualizations of your learning journey.
  • Improve and Develop the Platform: Analyze usage data to understand how our users interact with the Platform, identify areas for improvement, and develop new features. This data is typically used in an aggregated and anonymized form.
  • Communicate With You: Send you service-related emails, such as account verification, technical notices, updates, and support responses.
  • Ensure Security and Prevent Fraud: Monitor for suspicious activity and enforce our terms of service.

4. How We Share Your Information

We do not sell your personal information. We may share your information with third parties only in the circumstances described below:

  • AI Service Providers: To provide our core AI-powered features (Contextual Chat, Sentence Translation), we send certain data to third-party AI service providers (e.g., Google, OpenAI, or other similar platforms).
    • What we send: This includes the text of your chat messages and the relevant context from your selected skills or vocabulary lists.
    • What we DO NOT send: We do not send your personal account information (like your email or name) with these requests.
    • IMPORTANT: The AI practice features are for language learning. We strongly advise you not to include any sensitive personal information (e.g., full name, address, financial information, health data) in your practice conversations or translation exercises.
  • Third-Party Service Providers: We may share your information with vendors and service providers who support our business, such as for website hosting, database management, cloud services, and analytics (e.g., Google Analytics). These providers are contractually obligated to safeguard your data and only use it for the services they provide to us.
  • Legal Obligations and Rights: We may disclose your information if required to do so by law or in the good faith belief that such action is necessary to comply with a legal obligation, protect and defend our rights or property, prevent or investigate possible wrongdoing in connection with the Platform, or protect the personal safety of users or the public.
  • Business Transfers: In the event of a merger, acquisition, or asset sale, your personal information may be transferred. We will provide notice before your personal information is transferred and becomes subject to a different Privacy Policy.
  • Content Sharing (Future Feature): Should we implement content sharing, any skills or vocabulary lists you explicitly choose to share will be made accessible to other users of the Platform as designated by you. You will have control over what content is shared.

5. Data Storage and Security

We use commercially reasonable administrative, technical, and physical security measures to help protect your personal information. While we have taken reasonable steps to secure the personal information you provide to us, please be aware that despite our efforts, no security measures are perfect or impenetrable, and no method of data transmission can be guaranteed against any interception or other type of misuse.

6. Your Data Rights and Choices

You have certain rights regarding the personal information we hold about you.

  • Access and Update: You can review and change your account information at any time by logging into your account settings.
  • Manage Content: You can create, modify, and delete your skills, vocabulary lists, and folders directly within the Platform.
  • Account Deletion: You may request the deletion of your account and all associated personal data by contacting us at the email address below. Please note that we may need to retain certain information for record-keeping purposes, to complete transactions, or when required by law.
  • Email Communications: You can opt-out of receiving promotional emails from us by following the unsubscribe link included in those emails. You will continue to receive essential service-related emails.

7. Children's Privacy

Our Platform is not intended for use by children under the age of 13. We do not knowingly collect personally identifiable information from children under 13. If we become aware that we have collected personal information from a child under 13 without verification of parental consent, we will take steps to remove that information from our servers.

8. International Data Transfers

Your information, including personal data, may be transferred to — and maintained on — computers located outside of your state, province, country, or other governmental jurisdiction where the data protection laws may differ from those of your jurisdiction. Your consent to this Privacy Policy followed by your submission of such information represents your agreement to that transfer.

9. Changes to This Privacy Policy

We may update our 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 at the top. You are advised to review this Privacy Policy periodically for any changes.

10. Contact Us

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

Email: support@nihongoflow.com