Thank you for choosing DustOff (the "App"), a lightweight device junk cleaning and storage optimization tool developed and operated by DustOff (hereinafter referred to as "we", "us", or "our"). We are committed to protecting the privacy and personal information of all users (hereinafter referred to as "you") who access and use the App. This Privacy Policy explains the types of information we collect, how we use, store and protect such information, as well as your rights regarding your personal data when you use the App. By downloading, installing, or using the App, you acknowledge that you have read, understood, and agreed to the terms and conditions set forth in this Privacy Policy.
1. Information We Collect
We only collect information that is necessary to fulfill the core functions of the App, and we strictly avoid collecting excessive personal data. All collection activities comply with applicable data protection laws and regulations. The information we collect is categorized as follows:
1.1 Automatically Collected Device and Technical Information
When you use the App, we may automatically collect limited technical information to ensure stable operation and optimize your user experience. This information includes:
•Basic device attributes: Device model, brand, operating system version, RAM/ROM capacity, and network connection type (Wi-Fi/cellular).
•App usage data: Launch frequency, session duration, types of junk files scanned and cleaned, and storage space released after cleaning.
•Crash logs: Anonymous data related to App crashes or functional exceptions, which are used solely for troubleshooting and performance optimization.
•We do not collect unique device identifiers (such as IMEI, Android ID, IDFA) unless you explicitly authorize it for cross-device data synchronization.
1.2 Information Related to Cleaning Functions
To provide accurate cleaning services, the App will access the following data locally on your device (without uploading to our servers unless you choose to sync data):
•Junk file information: Types and sizes of cache files, residual installation packages, invalid logs, and empty folders generated by other apps on your device.
•Storage usage data: Overall storage occupancy of your device and storage usage of individual apps, which is used to generate cleaning recommendations.
•We will never access, read, or store the content of your personal files (including photos, videos, documents, messages, and call records). All cleaning operations are performed locally on your device.
1.3 Voluntarily Provided Information
You may choose to provide personal information in specific scenarios, and such provision is entirely voluntary:
•User Feedback: When you submit suggestions, report bugs, or contact us for support through the App’s feedback function, you may provide a description of the issue or relevant screenshots (no personal contact information is required).
•Optional Data Sync: If you enable the cloud sync function to back up your cleaning preferences, you may voluntarily provide a username (no real-name required) to associate your sync data.
1.4 Information Collected by Third-Party Services
The App may integrate limited third-party tools to enhance functionality, and these third parties may collect anonymous data in accordance with their own privacy policies:
•Analytics Tools: We use tools like Firebase Analytics to collect anonymous usage data (e.g., popular cleaning features, user retention rates) to improve the App’s performance and optimize function design. These tools do not track personal information.
•Advertising Services (If Applicable): For the free version of the App, third-party advertising SDKs may collect anonymous device data to display non-intrusive, relevant ads. You can opt out of personalized ads in the App’s settings at any time.
•We do not control the data collection practices of third-party services, and we recommend that you review their privacy policies before using related features.
2. Purpose of Using Your Information
We use the collected information exclusively for the following legitimate and necessary purposes:
1.To provide core cleaning and optimization functions: Enabling junk file scanning, one-click cleaning, storage space analysis, and personalized cleaning recommendations.
2.To optimize the App’s performance: Analyzing anonymous usage data to fix functional bugs, improve cleaning algorithms, and reduce the App’s resource consumption.
3.To respond to user inquiries: Addressing feedback and resolving technical issues submitted by users through the feedback function.
4.To ensure App security: Detecting and preventing malicious attacks, fraudulent activities, or unauthorized access to the App’s servers.
5.To comply with applicable laws and regulations: Fulfilling legal obligations such as responding to legitimate requests from regulatory authorities.
3. Data Storage and Protection
3.1 Storage Details
•Local Storage: Most of the cleaning-related data (e.g., junk file type, storage usage) is stored locally on your device and will be deleted once you complete the cleaning process.
•Storage Period: Anonymous usage data will be retained for 6 months after your last use of the App, after which it will be anonymized or permanently deleted. Optional sync data will be retained until you disable the sync function or request deletion.
3.2 Security Measures
We adopt comprehensive technical and organizational measures to protect your information from unauthorized access, disclosure, modification, or destruction:
•All data transmitted between your device and our servers is encrypted using industry-standard SSL/TLS protocols.
•Strict access control policies are implemented, with only authorized personnel having access to user data (if any), and such access is logged and audited regularly.
•Regular security audits and vulnerability scans are conducted to identify and address potential risks in a timely manner.
•Please note that no data transmission or storage method is 100% secure. We will make every effort to protect your information, but we cannot guarantee absolute security. You are responsible for keeping your device and account credentials secure.
4. Sharing and Disclosure of Information
We will not sell, rent, or lease your personal information to any third party for commercial purposes under any circumstances. We may share information only in the following limited cases:
1.With third-party service providers who assist us in operating the App (e.g., cloud storage providers, analytics tools). These third parties are contractually obligated to protect your data and may only use it for the specific purposes authorized by us.
2.When required by law, regulation, legal process, or government authority, we may disclose anonymous or non-personal data to comply with legal obligations.
3.To protect the legitimate rights and interests of us, our users, or third parties (e.g., investigating fraud, resolving disputes, or preventing harm to personal safety or property).
4.In the event of a merger, acquisition, or sale of all or part of our assets, your information may be transferred to the successor entity, provided that the successor agrees to comply with this Privacy Policy and continues to protect your data. We will notify you of such a transfer through a prominent pop-up notification within the App.
5. Your Rights Regarding Your Information
Pursuant to applicable data protection laws and regulations, you have the following rights regarding your personal information:
1.Right to Access: You may request access to the personal information we hold about you (e.g., sync preferences) through the App’s settings.
2.Right to Correction: If your sync data is inaccurate or incomplete, you may request us to correct or update it.
3.Right to Deletion: You may request the deletion of your sync data at any time by disabling the cloud sync function in the App’s settings.
4.Right to Withdraw Consent: If you have previously authorized the collection of optional data (e.g., cross-device sync), you may withdraw your consent at any time in the App’s settings. Withdrawing consent will not affect the legality of data processing conducted before the withdrawal.
5.Right to Data Portability: You may request to export your cleaning preference data in a machine-readable format for personal use.
6. Children’s Privacy
The App is not intended for children under the age of 13 (or the minimum age required by applicable laws). We do not intentionally collect personal information from children. If we become aware that we have collected personal information from a child without the consent of a parent or guardian, we will immediately delete the relevant information. If you are a parent or guardian and believe your child has provided personal information through the App, please use the built-in feedback function to contact us for processing.
7. Changes to This Privacy Policy
We may update this Privacy Policy from time to time to reflect changes in our business practices, legal requirements, or App features. When we make material changes to the Policy, we will notify you through a prominent pop-up notification within the App at least 30 days before the changes take effect. Your continued use of the App after the changes take effect constitutes your acceptance of the updated Privacy Policy.
8. Contact Us
If you have any questions, concerns, or requests regarding this Privacy Policy or the handling of your personal information, please contact us