Privacy Policy

Thank you for choosing to use our application PDF Editor & Doc Viewer (hereinafter referred to as "this application"). We are well aware of the importance of privacy rights to you and always prioritize the security and protection of user information. This Privacy Policy aims to clearly and transparently explain to you our practices regarding information collection, use, storage and protection. Please read carefully before downloading or using this application. If you do not agree with the content of this policy, please do not use this application. Once you start using it, it is deemed that you have fully understood and agreed to all the terms of this policy.

I. Information Collection and Utilization

We may collect your information in the following two situations:

1. The information you voluntarily provided

When you are using this application, such as submitting feedback, suggestions or registering as a user, you may voluntarily provide some information (such as username, email address, etc.). This information is only collected when you actively input or interact with it.

2. Automatically collected information

To enhance application compatibility, analyze usage and optimize user experience, we may automatically collect the following information:

• Device information: such as device model, operating system version, unique device identifier, etc., used for performance adaptation and error diagnosis;
• Data usage: With the help of third-party analytical tools (such as Google Analytics), we may collect statistical data such as visit frequency, page dwell time, and usage behavior, which are only used for internal analysis;
• Log information: Records IP addresses, system languages, application crash information, etc., which is helpful for monitoring the running status and improving system stability.

Please rest assured that all the automatically collected information does not contain your personal identification information and will not be used for any personalized tracking without your consent.

Ii. Permission Description

To ensure the normal operation of this application, we need to apply for the following permissions:

• Camera permission: Used to scan paper documents into PDFS, only requested when using related functions;
• Storage permission: Used to save and read local files, without tampering with or deleting user content;
• File access permission (MANAGE_EXTERNAL_STORAGE) : Used for management functions such as document search, classification, opening and editing;
• Notification permission: Used to push important information (such as update prompts, function reminders);
• Front-end service permissions: Ensure the stability of tasks such as document conversion and file generation, and display the processing progress in real time.

We promise that all permissions will be used only after the user's authorization. We will never use them beyond the scope and will never upload or analyze the content of files privately.

Iii. Purpose of Information Use

The information we collect will be used for the following purposes

Send important notifications, such as function upgrades and security warnings;

• Enhance product performance, fix errors, and optimize user experience;
• Personalized recommendation service content;

Data analysis and statistics for product iteration and service improvement;

In some versions, it is used to display personalized advertisements (but does not include private identity data that can identify you).

Iv. Data Storage and Security Measures

We strictly adhere to the principle of "local processing and minimum collection"

All document processing is completed locally on the device, and no files are uploaded to the server.

• Use modern encryption technologies (such as HTTPS and secure storage protocols) to ensure the security of data transmission and storage;

Permission and access control mechanisms ensure that only authorized operations can access necessary data.

Conduct regular system security audits and promptly address potential risks.

We promise never to sell or transfer your personal information to any third party.

V. Third-party Services and Information Sharing

In some cases, we may collaborate with third-party service providers for purposes including advertising placement, functional support, analysis and optimization, etc. These service providers may receive anonymous statistical data (excluding personal identity information) through SDKS, for example:

• Facebook:https://www.facebook.com/policy.php
• Google AdMob:https://support.google.com/admob/answer/6128543?hl=zh-Hans
• Firebase:https://firebase.google.com/support/privacy
• Adjust:https://www.adjust.com/privacy-policy/
• AppLovin:https://www.applovin.com/privacy/
• Vungle:https://vungle.com/privacy/
• Pangle:https://www.pangleglobal.com/privacy
• Play Services:https://policies.google.com/privacy

Please rest assured that we will only carry out such cooperation under the premise of abiding by the law and protecting user privacy.

Vi. User Rights

We respect and safeguard your following data rights

• Access rights: You have the right to view the information we hold about you;
• Right to Correction: If the information is incorrect, you have the right to request modification at any time.
• Right to deletion: When the legal conditions are met, you can apply to delete the relevant data.
• Right to withdraw consent: You may withdraw a certain permission or consent for data processing that has been granted at any time.

Vii. Age-appropriate Usage Tips

This application is suitable for users who are 14 years old or above. If we discover that minors are using the application or providing information without the consent of their guardians, we will immediately take measures to delete the relevant data. Parents or guardians should pay attention to and guide the usage behavior of minors.

Viii. Policy Updates

This Privacy Policy may be revised from time to time as laws, policies and product features change. If there are any significant changes, we will notify you either within the app or on our official website. If you do not agree with the update content, please stop using it immediately. By continuing to use, you are deemed to have agreed to and accepted the updated terms.

Ix. Contact Us

If you have any questions, suggestions or data-related requests regarding this Privacy Policy, please feel free to contact us through the following methods

[email protected]