This Privacy Policy describes our policies and procedures regarding the collection, use, and disclosure of information when you use this Service. It also informs you about your right to privacy and how the law protects you.

We use your personal data to provide and improve the Service. By using the Service, you agree to the collection and use of information in accordance with this Privacy Policy.

Words with initial letters capitalized have the meanings defined under the following conditions. Regardless of whether they appear in singular or plural form, the meanings of the following definitions shall remain the same.

For the purposes of this Privacy Policy:

• Account means a unique account created for you to access our Service or parts of our Service.
• Affiliate means an entity that controls, is controlled by, or is under common control with a party. "Control" means ownership of 50% or more of the shares, equity, or other securities, or the right to vote for the election of directors or other governing bodies.
• Service means the software program "TurboSave" provided by the Company.
• Company (referred to as "the Company", "we", "us", or "our" in this Agreement) means Shenzhen Yongdongke Innovation Technology Co., Ltd..
• Country refers to: the People's Republic of China
• Device means any device that can access the Service, such as a computer, mobile phone, or digital tablet.
• Personal Data means any information relating to an identified or identifiable individual.
• Service Provider means any natural or legal person who processes data on behalf of the Company. It refers to third-party companies or individuals employed by the Company to facilitate the Service, provide the Service on behalf of the Company, perform services related to the Service, or assist the Company in analyzing how the Service is used.
• Usage Data means data collected automatically, either generated by the use of the Service or from the Service infrastructure itself (e.g., duration of page visits).
• You means the individual accessing or using the Service, or the company, organization, or other legal entity on whose behalf such individual is accessing or using the Service (as applicable).

Usage Data is collected automatically when you use the Application. Usage Data may include information such as your device's Internet Protocol (IP) address, browser type, browser version, the pages of our Service that you visit, the date and time of your visit, the time spent on those pages, unique device identifiers, and other diagnostic data.

When you access the Service via a mobile device or through a mobile device, we may automatically collect certain information, including but not limited to the type of mobile device you use, your mobile device's unique ID, your mobile device's IP address, your mobile device's operating system, the type of mobile Internet browser you use, unique device identifiers, and other diagnostic data.

To provide you with a more comprehensive and efficient backup service, our application requires full file management permission. Here, we explain in detail the necessity of obtaining this permission, its uses, and the protection measures for your data.

1. Necessity of Obtaining Permission

During backup operations, you may wish to fully and accurately back up various types of files on your device (including but not limited to documents, images, audio, videos, and other file formats) to a designated location (such as the cloud or an external storage device). Since files on your device are stored in different directory structures, if the application only has limited file access permissions, it will be unable to traverse and access all files you wish to back up.

For example, some important work documents may be stored in custom folders, precious family photos may be scattered across different album directories, and some files in special formats may be stored in specific application-associated folders. Only with full file management permission can the application ensure that all files on your device are scanned and backed up without omission, meeting your need for comprehensive data backup.

2. Specific Uses of the Permission

File Scanning and Identification: After obtaining permission, the application will scan all files in your device's storage. Using specific algorithms and technologies, it identifies different types of files and categorizes them. This process is similar to classifying and numbering books in a large library based on categories, authors, publication years, etc., to facilitate quick and accurate retrieval and processing of each book (i.e., each file). For example, all .jpg format images are classified as images, and .doc and .pdf format files are classified as documents.

Backup Execution: After completing file scanning and classification, the application will copy and transfer the identified files to the target location in accordance with your set backup strategy (e.g., backing up to a specific folder on a cloud server or a designated path on an external USB storage device). Taking cloud backup as an example, the application will establish a secure connection with the cloud server and upload local files to the exclusive storage space assigned to you on the server—similar to moving items from your home to a secure warehouse for safe keeping.

Backup Integrity Verification: To ensure that backed-up files are accurate and complete, after completing the backup operation, the application will use the obtained permission again to compare and verify the local source files with the files backed up to the target location. Through technical means such as calculating file hash values (similar to a file's "fingerprint"—each file has a unique hash value), it confirms that the backed-up files are identical to the original files in terms of content and size. Only when all files pass the integrity verification will the backup task be deemed successfully completed.

3. Data Protection Measures

Encrypted Transmission: When transferring your files from your device to the backup target location (e.g., the cloud), the application uses advanced encryption algorithms (such as the SSL/TLS encryption protocol) to encrypt the data. This means that your files are like being placed in a safe with a high-strength lock during transmission. Even if the data is illegally intercepted during transmission, third parties cannot read its content, as they will only see a string of encrypted garbled characters.

Encrypted Storage: Whether temporarily storing backup-related data locally on your device, or storing files on a cloud server or external storage device, the application will store files in encrypted form. On the cloud, files are encrypted using industry-standard encryption algorithms such as AES before being stored on the server's hard drive; for external storage devices, data is encrypted during writing. This ensures that even if the storage device is lost or stolen, the data contained therein will not be easily accessed or used by others.

Strict Access Control: The application has established a strict internal access control mechanism—only authorized specific modules and code can operate on the obtained files. At the same time, extremely strict permission management policies are formulated for application development and operation personnel to restrict their access to user file data. Only when necessary (e.g., for troubleshooting and after going through multiple approval processes) can relevant personnel view a small amount of user data in a secure and controllable environment. All operations are recorded in detail and audited for traceability and accountability.

Compliance with Privacy Policy: We always strictly comply with the published Privacy Policy and will not use your obtained file data for any purposes unrelated to the backup service. Without your explicit consent, we will not disclose the content of your files to any third parties. The Privacy Policy details the rules and measures regarding the collection, use, storage, and protection of your data, which you can review at any time within the application or on our official website.

We understand the importance you attach to your personal data. Obtaining full file management permission is to better serve the backup function, and we will make every effort to protect the security and privacy of your data. If you have any questions or concerns about permission acquisition or data protection, please feel free to contact us through the feedback channel within the application or our official customer service.

Limited Liability

You shall not use this Application in any way that may violate local or international laws. If you have doubts about compliance with the law, please uninstall this Application.

Changes to This Privacy Policy

This Privacy Policy may be updated at any time without prior notice. We encourage you to check it occasionally for updates and changes.

Questions

If you have any questions about this Privacy Policy, please contact us at huangxiaoru@yongdongke.com.