Last Updated: 【November 26, 2025】
This Privacy Policy (hereinafter referred to as the "Policy") outlines how 【Yui Sakamoto】 (hereinafter referred to as "We" or "the Developer") handles the personal information and user data collected through the smartphone application "WordBox" (hereinafter referred to as "the App").
Please read this Policy carefully before using the App.
We collect and utilize the following types of information through the App for the purposes described below.
(1) Information Provided by the User
Information Collected: Authentication Information
Method / Timing of Collection: Upon account registration using services like Firebase Authentication.
Purpose of Use: To provide the App's login features, User identification, and respond to inquiries.
Information Collected: User-Generated Content
Method / Timing of Collection: When creating/saving "My Word Lists" and using the memo function.
Purpose of Use: To provide and maintain the core functions of the App (idea generation, list saving, and synchronization).
(2) Device and Usage Information
Information Collected: Device Information
Method / Timing of Collection: During App usage.
Purpose of Use: To resolve service provision issues and prevent unauthorized use.
Information Collected: Usage Data
Method / Timing of Collection: During App usage.
Purpose of Use: To analyze App usage patterns and improve features.
Information Collected: Advertising Identifiers
Method / Timing of Collection: When displaying advertisements via AdMob.
Purpose of Use: For proper advertisement display and measuring advertising effectiveness.
Information Collected: Crash Reports
Method / Timing of Collection: When the App crashes.
Purpose of Use: To fix bugs and improve the quality of the App.
We share the information collected through the App with the following third-party service providers, and information is transmitted externally through these services. Please refer to the respective privacy policies of each service for details on their data handling and usage purposes.
Firebase (Google LLC)
Purpose of Use: User authentication, database storage (My Word Lists, etc.), App usage analysis, and crash report collection.
Privacy Policy: Google Privacy Policy
AdMob (Google LLC)
Purpose of Use: Displaying advertisements, measuring effectiveness, and monetization.
Privacy Policy: Google AdMob Policy
We implement technical and organizational security measures, including the use of Firebase's security features, to rigorously manage collected information and prevent loss, theft, unauthorized access, leakage, or alteration.
Users can edit or delete User-Generated Content such as "My Word Lists" at any time directly through the App.
We reserve the right to modify this Policy at any time due to changes in applicable laws, the Developer's judgment, or changes to the App's functions. Users will be notified of any changes to this Policy within the App or on the website operated by the Developer.
If a User disagrees with the revised Policy, the User must cease using the App.
For inquiries regarding this Policy, or complaints and consultations regarding the handling of personal information, please contact us at the following window:
Developer Name: 【Yui Sakamoto】
Contact Email Address: 【sai.developer31@gmail.com】