Effective Date: August 25, 2025
PDF Reader (hereinafter referred to as the "App") respects and protects the privacy of all users. This Privacy Policy explains how we collect, use, store, and protect your information. Please read it carefully before using this App.
1. Information Collection
To provide the App's core features and improve our services, this App may collect the following information:
Personal Information (Optional)
When users contact us via email, we may collect your email address: mastertechnology786@gmail.com
This App does not actively collect sensitive identifying information such as your name or ID number.
Device and Usage Information
Device model, operating system version, device identifier, network information.
App usage data (such as features accessed, usage time, crash logs, and performance data).
File and Storage Information
To allow you to open, read, and manage PDF files, this app requests the storage permission:
android:name="android.permission.MANAGE_EXTERNAL_STORAGE"
This app only accesses the files you choose to open or manage and does not collect or upload personal file contents.
Advertising and Analytics Data
Third-party advertising and analytics SDKs (such as TopOn, Vungle, UnityAds, Ironsource, Pangle, Facebook Audience Network, AdMob, AppLovin, Mintegral, Chartboost, and Firebase) may collect:
Device information (such as advertising identifiers IDFA/GAID, IP address, and operating system version);
Usage behavior (such as clicks on ads and browsing time);
Location information (such as approximate region based on IP address, for ad optimization).
2. Information Use
The collected information may be used for the following purposes:
Providing core app functionality (opening and managing PDF files);
Analyzing app performance, troubleshooting errors, and improving user experience (via Firebase).
Provide personalized ads and content (via integrated ad SDKs).
Ensure accurate ad delivery and prevent cheating and fraud.
3. Information Sharing and Disclosure
We do not sell or rent your personal information to any third party. However, we may share it in the following circumstances:
Third-Party Advertising and Analytics Partners:
To display ads and perform app analytics, this app integrates the SDKs of the following partners:
TopOn
Vungle
UnityAds
Ironsource
Pangle
Facebook Audience Network
AdMob
AppLovin
Mintegral
Chartboost
Firebase
These partners may collect device identifiers and usage data for ad display, click counting, and fraud detection.
Legal Requirements: We may disclose information when required by laws, regulations, or government agencies.
Protecting Rights and Interests: To safeguard our legitimate rights and interests or those of our users (such as preventing fraud and protecting app security).
4. Children's Privacy
Scope
This app is not intended for children under 13 years of age. If you are under 13, please do not use this app.
For users aged 13 and above, we implement additional privacy protections.
Data Collection Restrictions
The ad SDK and Firebase may collect some device and usage data, but no sensitive personally identifiable information.
We do not ask young users to provide their names, ID numbers, or home addresses.
Parental/Guardian Guidance
We recommend that young users use this app under the supervision of their parents or guardians.
Parents can limit ad personalization and data collection through their device settings.
Data Usage
The data of young users is used only for basic app functionality, performance analysis, and ad display.
We do not conduct individual profiling of children's data or use it for commercial purposes other than targeted advertising.
5. Permissions
This app uses the following Android permissions:
android.permission.MANAGE_EXTERNAL_STORAGE
Purpose: Used to read and manage user PDF files, providing document browsing and management capabilities.
Restrictions: Your private files will not be collected or uploaded, and access is limited to the documents you choose to access.
6. Data Security
We implement reasonable technical and administrative measures to protect your data, including:
Encrypted storage and transmission (where feasible).
Limiting access to third-party SDKs to ensure their use is limited to advertising or analytics.
Preventing unauthorized access, modification, disclosure, or deletion.
However, please note that data security cannot be guaranteed 100% on the Internet or on mobile devices.
7. Privacy Policy Updates
We may update this Privacy Policy due to feature enhancements, legal changes, or adjustments to our advertising/analytics SDKs. Users will be notified of updates through in-app notifications or other reasonable means. We recommend that you check back regularly to stay updated.
8. Contact Us
If you have any questions about this Privacy Policy or the handling of your personal information, please contact us via the following methods:
Email address: mastertechnology786@gmail.com