Privacy Policy

Last Updated: June 18, 2026

This privacy policy (the "Policy") describes how RATSoft ("we", "us", or "our") collects, uses, and shares information about you when you use our mobile application, Starry Line (the "App").

By using the App, you agree to the collection and use of information in accordance with this Policy.

1. Information We Collect

A. Information You Provide Directly

• Account Information: When you sign in using Google Sign-In, we collect your unique Google User ID (UID), email address, and nickname/pen name to create and manage your user account, display your profile, and synchronize your application data.

B. Information Collected Automatically

• Device and Usage Information: Like most mobile applications, our App may automatically collect certain technical data, including your device's unique device identifier, operating system version, and general usage statistics to ensure the App functions properly.
• Advertising Data: The App uses Google AdMob to show advertisements. Google AdMob may collect and process information such as your device's advertising ID (e.g., Android AAID) and IP address to personalize ads and analyze ad performance.

2. How We Use Your Information

We use the information we collect for the following purposes:

• To provide, maintain, and improve the App's core services.
• To authenticate your identity and secure your account access.
• To personalize your user experience (e.g., displaying your nickname and synced records).
• To serve relevant advertisements via Google AdMob.
• To communicate with you and respond to your support inquiries.