PDF Viewer: PDF Launcher Privacy Policy
Last Updated: July 2, 2026
Welcome to "PDF Viewer: PDF Launcher" (hereinafter referred to as "this application"). We are committed to protecting your privacy and data security. This Privacy Policy aims to clearly and transparently explain how we collect, use, store, and protect your information, and inform you of your rights.
Please read and understand the entire contents of this policy carefully before using this application. By using this application, you agree that we will process your information in accordance with this policy.
Minor Protection
We attach great importance to the privacy protection of minors.
This application is primarily intended for adults. We will not knowingly or proactively collect personal information from minors.
If you are a minor under the age of 18 (or the legal age of majority in your jurisdiction), please be sure to read this policy under the guidance of your parent or guardian, and use this application and provide information only after obtaining their consent.
If you are a parent or guardian and have any questions about your guardian's use of this application, please contact us using the contact information at the end of this policy. If we discover that we have collected personal information from minors without verifiable parental consent, we will delete the relevant information as soon as possible.
Data Explanation
We understand that the PDF documents you process may contain personal privacy, trade secrets, or other sensitive information. Protecting the security of this data is our core responsibility.
Local Processing Principle: All documents (including PDF, Word, Excel, PPT, etc.) that you open, view, edit, or manage in this application are processed on your local device by default. All document processing operations (including reading, annotation, editing, merging, splitting, locking, unlocking, etc.) are completed locally on your device; document content is not uploaded to any of our servers. This ensures your absolute control over your documents.
Strict Data Usage Principles: The sole purpose of collecting and processing any data is to provide you with the core functionality of the application, namely, helping you view, edit, and manage various documents. We solemnly promise that we will never use your document content for any other purpose not stated in this policy, nor will we share, disclose, sell it to any third party, or use it for any form of personalized advertising.
File Access Permission Notice: This application needs access to your device's storage space to read and display/edit documents you specify locally. The storage permissions you grant are only for reading and saving documents; we will not access or modify any of your files without your active intervention.
Information Collection and Use
We adhere to the principles of "legality, legitimacy, and minimum necessity," collecting your personal information solely to provide you with the core services of this application, ensure the secure and stable operation of the service, and optimize the product experience. The categories and specific uses of the information we collect are as follows:
Information You Actively Provide
The core functions of this application are all completed locally; therefore, we will not actively collect the document content or personal information you input.
Information We Automatically Collect
To maintain the normal operation of the service and continuously improve the product, some information may be automatically collected when you use this application. This information usually cannot directly identify you personally.
Device Identifiers and Information: We collect your Android Advertising ID (Google Advertising ID) and basic device information, such as device model, operating system version, screen resolution, and mobile carrier. This information is used for:
Ad Serving and Attribution: Showing you potentially personalized ads and analyzing campaign performance through integrated third-party advertising SDKs (such as Google AdMob).
Ensuring Compatibility and Stability: Identifying and resolving compatibility issues related to specific devices or system versions to ensure stable app operation.
Please note: Your mobile device may allow you to opt out of using information related to the apps you use to serve you ads tailored to your interests:
On Android devices, choose "Oppose Interest-Based Advertising" or "Oppose Ad Personalization";
On iOS devices, choose "Limit Ad Tracking".
Usage of Data and Analytics: We collect anonymized, aggregated interaction data using third-party analytics tools (such as Google Firebase). This includes:
Frequency and duration of use of various in-app functions;
App crash reports and performance data (such as startup speed and page load time).
Purpose of Use: This anonymized information helps us gain a deep understanding of the overall behavior patterns of our user base and continuously optimize your user experience. All analytics data is anonymized and will not be associated with your personal identity or document content.
Local Data Storage: To ensure your data security and ease of use, the app stores data locally on your device. This includes your recently viewed document history, saved file lists, and temporary files during PDF editing. This data exists only on your device and we have no access to it.
Our Integrated Third-Party Services
To provide full app functionality, analyze service usage, and support the app's free operation through advertising, we have integrated the following trusted third-party services. These service providers only have access to relevant information to the extent necessary to fulfill their responsibilities and are contractually bound.
Core Platform Services
We use Google Play Services to ensure the app's core functionality functions correctly on Android devices, including system-level integration and basic service support. See their privacy policy at: https://policies.google.com/privacy
Data Analytics
We integrate Google Firebase services for app performance monitoring, crash reporting, and anonymized usage analysis. This helps us identify bugs, understand feature usage, and continuously improve the product experience. For Firebase's Privacy Policy, please see: https://firebase.google.com/support/privacy/
Advertising Services
To maintain app operation, we integrate with several advertising service platforms:
Google AdMob: Used to display ads within the app and measure ad performance.
Facebook Ads: Used to expand ad delivery channels and optimize ad performance.
Pangle: As an additional ad source, enriching ad content diversity.
TopOn: As an ad aggregation platform, coordinating and optimizing the delivery strategies of multiple ad sources.
These advertising services may collect device identifiers (such as Android Advertising ID), device information, and ad interaction data for personalized ad delivery and performance analysis.
Special Note Regarding Advertising Services:
We solemnly promise that we will never use your document content or personal files for any advertising-related purpose. All advertising service providers' data processing is governed by their respective privacy policies, which we recommend you review:
Google AdMob: https://policies.google.com/privacy
Facebook: https://www.facebook.com/about/privacy
Pangle: https://www.pangleglobal.com/privacy
TopOn: https://www.toponad.com/en/privacy-policy
Sharing and Disclosure of Information
We consider your document data to be of the highest level of privacy. Therefore, we will never sell, rent, or trade any of your personal information or document content. We will only share or disclose your information under the following strictly limited circumstances:
With your explicit consent: We will share information only to the extent authorized by you, after fully informing you of the recipients, the purpose of sharing, and the type of data, and obtaining your explicit, active, and separate consent.
To comply with legal obligations: We may disclose your information when we believe it is reasonably necessary to comply with applicable laws, regulations, legal processes, mandatory governmental requirements, or to respond to a valid legal request (such as a court order). We will endeavor to notify you of such disclosures to the extent permitted by law and regulation.
Protecting Rights and Security: We may share information when necessary to protect the rights, property, and safety of ourselves, our users, or the public from harm. This includes enforcing our Terms of Service, investigating potential fraud or security breaches, and taking measures to prevent personal injury in emergency situations.
Business Transfer: In the event of a merger, acquisition, asset sale, or bankruptcy, we may transfer your information to relevant third parties. In such cases, we will ensure that the third party continues to comply with this Privacy Policy; otherwise, we will require them to obtain your consent again.
Aggregation and Anonymization of Information: We may share or publicly disclose aggregated and anonymized information that cannot reasonably identify you personally. Such information may be used for purposes such as industry analysis, usage trend reports, or business collaborations.
Your Data Rights: Under the EU General Data Protection Regulation (GDPR), as a data subject, you have the following rights regarding your personal information. We are committed to respecting and protecting your right to exercise these rights.
Right of Access: You have the right to confirm whether we are processing your personal data, and if so, you have the right to access such data and obtain a copy.
Right to Correction
You have the right to request the timely correction of inaccurate personal data relating to you.
Right to Erasure (Right to Be Forgotten)
You have the right to request that we immediately delete your personal data, especially in the following circumstances:
The data is no longer necessary for its collection purpose;
You have withdrawn your consent and there is no other legal basis for processing;
You object to processing and there is no overwhelming legal grounds.
Right to Restrict Processing
In certain circumstances (such as disputes over data accuracy or objections to the legality of processing), you have the right to request that we temporarily restrict the processing of your personal data.
Right to Data Portability
You have the right to receive the personal data you provide to us in a structured, universal, machine-readable format and the right to transfer such data to another controller without our hindrance.
Right to Objection
You have the right to object at any time to processing of your personal data based on legitimate or public interests, based on grounds relevant to your specific circumstances. You also have the right to object at any time to processing of your data for direct marketing purposes.
Right to Withdraw Consent
If processing is based on your consent, you have the right to withdraw your consent at any time. This will not affect the legality of processing based on consent prior to withdrawal.
Right to Complain to Regulatory Authorities
If you believe our processing of your personal data violates GDPR, you have the right to complain to a regulatory authority, particularly in your place of residence, place of work, or the place where the violation is alleged.
How to Exercise Your Rights
We will respond to your request. For security reasons, we may require you to provide additional information to verify your identity. Exercising the above rights may affect the availability of some application functions, but we will not discriminate against you as a result.
Storage and Security of Information
We understand the sensitivity of your document data and therefore employ industry-recognized security measures to provide comprehensive protection for your information.
Data Storage
Local Storage: To maximize your privacy and control, your core document data (including PDF, Word, Excel, PPT, etc. files) is stored and processed locally on your mobile device by default.
Storage Period: We will retain your data only for the period necessary to achieve the purposes described in this policy, or as required by law. When data is no longer needed, we will securely delete or anonymize it. You can also delete local data yourself at any time using the clear history function within the application.
Security Measures
We use industry-standard security measures to protect your information. All data transmissions with third-party services (such as advertising and analytics SDKs) are encrypted using SSL/TLS. We strictly limit employee data access permissions, and all access is logged and monitored. We also have a comprehensive security management process, including employee privacy training, confidentiality agreements, and a security incident emergency response mechanism. In the event of a data breach, we will promptly notify you and regulatory agencies in accordance with the law.
Please note that internet data transmission and electronic storage cannot be guaranteed to be 100% secure. You also need to properly safeguard your device and account information to jointly protect data security.
Changes
We may update this Privacy Policy from time to time to reflect changes in our practices or for other operational, legal, or regulatory reasons.
Any updates will take effect after the revised policy is posted on this application and the "Last Updated" date at the top is updated. We encourage you to review this policy periodically to understand how we protect your information. Your continued use of this application after the new policy takes effect indicates your acceptance of the updated policy.
Contact Us
If you have any questions, comments, or concerns regarding this Privacy Policy, your personal information, or data protection practices, please contact us via:
Email: [email protected]
We will do our best to respond to and resolve your issues within a reasonable timeframe.