Privacy Policy of Sudoku Daily

At Sudoku Daily, we place the utmost respect on your privacy for all information we collect during the operation of our mobile application. Your personal privacy is our top priority.

1. Information We Collect

Sudoku Daily is built to be a lightweight, hassle-free puzzle game. You are never required to create an account or submit any personal information — including your full name, email address or phone number — to enjoy the full experience of our game.

To ensure smooth operation and continuous optimization, we will automatically collect or receive the following non-personal technical information only:

• Device-related information: Such as your device model, operating system version, and unique device identifiers.
• App usage data: Including your game progress, gameplay statistics, customized setting preferences, and app crash logs.

2. How We Use Your Information

All collected data is applied exclusively for the following legitimate purposes:

• To deliver, maintain and continuously upgrade the overall gameplay experience of Sudoku Daily.
• To track and analyze usage trends, so as to resolve technical glitches and app crashes efficiently.
• To automatically save your game progress and local personalized settings, so you can pick up right where you left off next time you open the app.

3. Third-Party Services

We integrate a small number of trusted third-party services in our app, to help us monitor application performance and provide reasonable in-app advertisements. These third-party service providers may collect information that can identify your device, and all their processing activities are subject to their respective independent privacy policies.

The common third-party service providers we may adopt include:

• Google Play Services: For official app distribution and supporting core basic functionaities of the game.
• Facebook Ads: For delivering targeted, non-intrusive in-app advertisements.

We strongly recommend you to visit the official websites of these third-party providers to review their full privacy policies.

4. Data Retention and Security

The vast majority of your game data, including high score records and ongoing puzzle sessions, is stored locally on your own device. For the very limited amount of information that may be transmitted to our end, we have implemented commercially standard security measures for protection. Please note that no data transmission method over the internet, nor any electronic storage solution, can guarantee absolute 100% security.

5. Children's Privacy

Sudoku Daily does not intentionally collect any personally identifiable information from children under the age of 13, or under 16 in regions with stricter local regulatory requirements. If you are a parent or legal guardian, and you become aware that your child has provided us with personal information, please reach out to us immediately, and we will take all necessary steps to remove the relevant data promptly.

6. Updates to This Privacy Policy

We may revise and update this Privacy Policy on an occasional basis. For this reason, we advise you to check this page periodically to stay informed of any adjustments. We will formally notify you of all policy changes by publishing the updated new version of the Privacy Policy on this page.