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Privacy Policy

Last updated: June 3, 2026

1. Introduction

ZAWA SYSTEM, the operator of YomiAI ("the App"), respects your privacy. The App is a news reader for subscribing to and reading RSS / Atom feeds. It provides AI-powered recommendation, summarization, and classification features (Pro plan) based on your interest tags and reading history to deliver more relevant articles, as well as on-device features such as translation, full-text search, and morning local notifications that run entirely on your device. This policy explains how the App handles personal information.

2. Account Information

The App uses Firebase Authentication and requires sign-in with a Google account or an Apple account. Through this sign-in, the following information is recorded on the operator's servers:

The Operator does not directly obtain or retain passwords or other authentication credentials.

3. Information Handled by the App

The App collects and uses the following information to provide and improve the service. We list separately the data sent to the operator's servers and the data that is processed entirely on your device.

Stored on the operator's servers (Firebase)

Article bodies, images, and other content may be cached on the server as a shared cache fetched from the source RSS feed; such data does not personally identify any user.

Processed only on your device (not transmitted to the operator's servers)

4. How We Use Information

We use collected information to:

5. Data Processing in AI Features

The App's AI features (all Pro-only) send the following data through Cloud Functions (asia-northeast1) to Gemini models on Google Cloud Vertex AI (global endpoint; the daily digest uses gemini-2.5-flash and the other features use gemini-3.1-flash-lite) to generate recommendations, rationale text, classifications, summaries, or digests:

Images embedded in articles and information that directly identifies the user (e.g., name, email address) are NOT sent to Vertex AI. Gemini on Vertex AI is governed by Google Cloud's data governance policy: Google Cloud does not use customer data submitted from the App to train its generative AI models. The relationship between the Operator and Google Cloud is subject to Google Cloud's Data Processing Addendum (DPA).

If you do not wish to have an interest profile constructed or to receive AI recommendations, you may delete your interest profile and reading history at any time using the "Reset interest profile" feature on the Interest Profile screen, accessible from the Recommendations screen. The daily digest and 3-bullet summary are not transmitted unless you actively use those features. Server-side processing for the AI features above does not occur unless you subscribe to the Pro plan.

6. Third-Party Services

The App uses the following third-party services:

Please review each service's privacy policy.

7. Cross-Border Data Transfers

Through the third-party services listed in Section 6, user data may be provided to the following third parties located outside Japan:

For information on the United States personal data protection regime, please refer to the materials published by Japan's Personal Information Protection Commission (https://www.ppc.go.jp/personalinfo/legal/kaiseihogohou/). Each recipient handles personal data at a level equivalent to the requirements of Japan's Act on the Protection of Personal Information (APPI), based on its respective privacy policy and applicable contractual safeguards such as standard contractual clauses (SCC).

8. Security Measures

The Operator takes the following measures to prevent leakage, loss, or damage of personal information and to maintain appropriate security:

9. Data Storage and Deletion

10. Biometric Authentication

The category lock feature can use your device's biometric authentication (Face ID / Touch ID / fingerprint, etc.). Biometric data is processed within the device's OS and Secure Enclave and is never transmitted to or stored by the App or the operator's servers.

11. Advertising and App Tracking Transparency (iOS)

The App displays advertisements provided by Google AdMob to Free plan users. On iOS, if the App accesses the advertising identifier (IDFA), an App Tracking Transparency (ATT) prompt is shown the first time you launch the App. You may decline; all features remain fully usable, but ads may be less personalized. No advertisements are shown when you subscribe to the Pro plan.

12. Profiling and Automated Decision-Making

The AI recommendation feature automatically constructs an interest profile from your interest tags and reading history and generates recommendations. Such recommendations only present articles or feeds and do not produce legal effects concerning you. If you wish to stop profiling, you can use the "Reset interest profile" feature on the Interest Profile screen (accessible from the Recommendations screen), or cancel the Pro plan.

13. Children's Privacy

The App is not primarily intended for children under 13, and we do not knowingly collect personal information from anyone under 13. Minors aged 13 or older but under 18 should use the App only with the consent of their parent or legal guardian. If we learn that a user is under 13, we will promptly delete that user's personal information.

14. Cookies

The App (the mobile application) does not use cookies. Web sites associated with the App (including this page and the landing page) likewise do not use cookies in principle and do not set any cookies for analytics or advertising tracking. Cookies that are operationally required by infrastructure services such as Firebase Hosting may occasionally be issued.

15. Your Rights (Disclosure, Correction, Suspension of Use)

Under Japan's Act on the Protection of Personal Information (APPI), you may request notification of the purpose of use, disclosure, correction, addition or deletion of content, suspension of use or erasure, and suspension of third-party provision of retained personal data held by the Operator.

Please submit your request to the contact email below. The Operator will verify that the requester is the data subject or their authorized representative by reasonable means, and will respond promptly in accordance with the APPI and other applicable laws.

Major data such as subscribed feeds, bookmarks, interest tags, and reading history can be reviewed at any time within the App. You can also delete data on the operator's servers yourself using the "Delete user data" feature in the Settings screen. For information collected by Firebase Analytics, AdMob, and similar services, you may need to use the opt-out mechanisms provided by the respective service providers (e.g., Google account ad settings, iOS App Tracking Transparency, Android advertising ID reset).

16. Changes to This Policy

This policy may be updated. Material changes will be announced through in-app notification or by updating this page. Changes take effect upon posting on this page.

17. Contact and Complaints

For privacy inquiries, requests for disclosure or the like, and complaints, please contact us at:

Operator: ZAWA SYSTEM
Email: info@zawasystem.com

If you are not satisfied with the Operator's response regarding the handling of your personal information, you may also consult Japan's Personal Information Protection Commission (https://www.ppc.go.jp/en/).