Last Updated: October 23, 2026
This Privacy Policy explains how Zentro Studio, as the developer and data controller of PDF ToolBox (package name: com.pdftb.tool.box, referred to as the “Application,” “we,” “us,” or “our”), handles information in connection with the Application.
The Application provides PDF reading, editing, conversion, scanning, and file-management functions. It may also process technical information required to operate the Application, deliver notifications, support advertising and attribution, diagnose crashes, and maintain service performance.
By installing or using the Application, you acknowledge the practices described in this Policy.
Data controller: Zentro Studio
Privacy contact: alltasks.tachmet@gmail.com
You may use this email address to ask questions about this policy.
We seek to process only information reasonably necessary for the Application’s operation, maintenance, security, analytics, advertising, and improvement.
Depending on how you use the Application and which services are enabled, technical information may include:
This information is generally used in an aggregated, pseudonymous, or de-identified form where feasible. Some third-party providers may process identifiers in accordance with their own privacy policies.
When the Application crashes or experiences a technical problem, we and relevant service providers may receive diagnostic information such as:
This information is used to investigate faults, improve stability, and resolve technical problems.
If you grant file access and use file-related functions, the Application may access supported files on your device, including PDF, Word, and other supported document formats.
File access may be used to:
The reference functionality is designed so that file operations are performed locally on the device. We do not use the Application to collect the contents of your documents, photos, or other personal files for analytics, advertising, or unrelated purposes, and file contents are not uploaded to our servers or disclosed to third parties through the normal file-management workflow.
If you actively use Android’s sharing functions, upload a file to another application, or use a third-party cloud or sharing service, that separate service will process the file under its own terms and privacy policy.
The Application may request camera access when you choose a scanning, document-capture, or photo-based feature. Camera access is used to capture content that you intentionally choose to scan or photograph. The application does not use the camera for unrelated background monitoring.
Unless you voluntarily provide information through a file-related operation or another feature, the Application is not intended to collect:
Some third-party advertising, analytics, attribution, or security providers may process technical identifiers and approximate location derived from an IP address. Their processing is governed by their own privacy policies.
Information may be obtained through the following channels:
We receive information when you:
The Application and its integrated services may automatically generate technical, usage, crash, performance, advertising, installation, and attribution information when the Application is installed or used.
Certain information is processed through third-party services integrated into the Application. Those services may collect or receive technical and usage information through their SDKs or service interfaces. The relevant providers and purposes are described below.
We use information only for purposes connected with the Application and its operation, including:
Information obtained through file access is used to perform the file operation you request. It is not used for behavioral advertising.
The application uses certain Google Firebase services. Google LLC may process technical, usage, diagnostic, and messaging information as a service provider or independent processor depending on the service and applicable law.
Google’s privacy information is available at:
https://policies.google.com/privacy
Firebase Analytics may process information such as:
Analytical information is used to understand Application usage, measure product performance, and guide service improvements.
Firebase Crashlytics may process:
Crashlytics is used to identify and resolve stability problems.
Firebase Performance Monitoring may process technical information about Application operation, including request performance, startup behavior, response times, and related device or usage information. This information is used to evaluate and improve application performance.
The Application uses Firebase Cloud Messaging (FCM) to support push notifications. FCM may process technical information required to deliver messages to your device, such as an installation or messaging token, device and application information, and message-delivery information.
FCM may be used for notifications related to Application operation, including service notices, and important Application updates. You may manage notification permission through Android system settings. Disabling notifications may prevent some messages from being delivered.
The Application uses a Cloudflare-hosted cloud configuration service to retrieve configuration parameters that control certain Application behavior, such as feature switches, display logic, operational parameters, or service policies.
For this purpose, the Application may make necessary network requests and transmit limited technical information required to complete those requests, such as IP address, connection information, device or Application version, and request or response metadata.
The Cloudflare configuration service is not used to upload the contents of your PDFs, documents, photos, contacts, or other personal files. We do not use this function to collect the private contents of your files.
Cloudflare’s privacy policy is available at:
https://www.cloudflare.com/privacypolicy/
The Application may display advertising through Google Mobile Ads and mediation or advertising partners.
Advertising providers may process information such as:
Advertising partners may use this information to provide, measure, personalize, limit, or report advertising, subject to applicable law and your choices.
Where required by law, including in the European Economic Area and the United Kingdom, the Application may request consent for personalized advertising through a Google-certified consent management platform.
Choosing non-personalized advertising or withdrawing consent does not necessarily remove all advertisements; it changes the purposes or information available for personalization where the relevant provider supports that choice.
The Application and its mediation configuration may involve the following providers or SDKs:
The Application may contain Google Mobile Ads and mediation adapters or related components for Facebook, AppLovin, Vungle, Unity, Pangle, Mintegral, Liftoff, and other configured networks. A provider may process information directly under its own terms when an ad request, impression, interaction, measurement event, or fraud-prevention event occurs.
You should review their privacy policies and consent choices for more information.
The application uses AppsFlyer Ltd. and its affiliates for application analytics, campaign attribution, advertising measurement, installation analysis, and fraud prevention.
AppsFlyer may process:
AppsFlyer information helps us understand how users discover and use the Application, measure campaign performance, improve the product experience, and identify potentially fraudulent advertising activity.
We do not use AppsFlyer to collect the contents of your PDF files, documents, photos, contacts, precise location, financial information, biometric information, or other sensitive personal content.
AppsFlyer’s privacy policy is available at:
https://www.appsflyer.com/legal/privacy-policy/
We do not sell the contents of your documents or intentionally disclose your private file contents for advertising.
Information may be disclosed in the following situations:
We may make relevant technical, usage, diagnostic, advertising, attribution, or crash information available to authorized providers that support:
The information shared is limited to what is reasonably necessary for the relevant service. Providers may process information under their own privacy policies and contractual or legal obligations.
The Application requests permissions only when they are relevant to a feature or operating requirement. Android may show permissions introduced by the Application or by integrated SDKs.
INTERNET and ACCESS_NETWORK_STATE support network requests, service availability checks, analytics, crash reporting, advertising, attribution, push notifications, and Cloudflare-hosted configuration retrieval.
Depending on the Android version and the feature used, the Application may request:
These permissions support user-directed file listing, reading, writing, editing, conversion, organization, and document-management operations. The Application does not use file access to upload the contents of your files for advertising or analytics.
You may revoke or change file access through Android settings. After revocation, functions that require access to device storage may stop working, while other functions may remain available.
CAMERA may be requested when you choose a document-scanning, image-capture, or photo-based function. Camera access is not intended for unrelated background use.
POST_NOTIFICATIONS may be requested to display relevant messages such as file-conversion progress, conversion results, service notices, and important Application updates. You can disable notifications through Android settings. Disabling the permission may prevent those notifications from appearing.
When processing large or complex PDF documents, certain operations—such as generating thumbnails, rendering previews, or converting files in batches—may take an extended period of time.
The Application may use FOREGROUND_SERVICE_SPECIAL_USE to help these operations complete without interruption and, where applicable, keep users informed through timely notifications with progress updates and completion status.
RECEIVE_BOOT_COMPLETED may be used to allow the Application to initialize eligible service state or restore relevant user-requested processing state after the device restarts, where supported by the Application and Android system. It is not used to read the contents of your files or to start unrelated advertising activity.
The Application may register to handle Android ACTION_VIEW requests for application/pdf. If you choose PDF ToolBox as your default PDF application, Android may open compatible PDF files with this Application when you select them from another application or the file system.
You may change the default PDF application at any time through Android’s default-app settings. This function does not provide home-screen launcher functionality and does not allow the Application to control or replace your device launcher.
We retain information only for as long as reasonably necessary to fulfill the purposes described in this Privacy Policy, including providing and maintaining the Application, troubleshooting, ensuring security, complying with applicable laws and regulations, resolving disputes, and fulfilling applicable obligations.
Retention periods may vary depending on the type of information and the service provider involved. Technical, analytics, advertising, attribution, and crash-related information processed by third-party service providers may be retained in accordance with their respective privacy policies and data retention practices.
Files and documents processed through the Application's local file-management functions remain under your control on your device. You may manage or delete such files at any time through Android system functions or the file-management features provided by the Application.
The Application does not require a user account and does not maintain a server for storing your personal files or documents. Your files and documents are processed locally on your device.
When you uninstall the Application, the Application and its associated application data stored on your device will be removed in accordance with the Android operating system and your device settings. After uninstallation, you will no longer be able to use the Application to access or manage application data associated with the Application.
Information that may have been processed independently by third-party service providers, such as technical, analytics, advertising, attribution, or crash-related information, is subject to the applicable privacy policies and data retention practices of those providers.
We use reasonable technical and organizational measures intended to protect information against unauthorized access, disclosure, alteration, and loss. Depending on the service involved, these measures may include:
No network, device, transmission method, or storage system can be guaranteed to be completely secure. Accordingly, we cannot promise absolute security, and third-party providers remain responsible for the security controls applicable to their own services.
You are responsible for protecting access to your device, system account, and any credentials associated with third-party services.
If you are located in the United Kingdom or the European Economic Area (EEA), your personal data may be transferred to and processed in countries or regions outside your country of residence, including the United States, in connection with our use of Firebase, AdMob, Facebook, AppLovin, and other third-party services.
Where personal data is transferred across borders, we will implement appropriate safeguards in accordance with applicable data protection laws and regulations. Depending on the circumstances, such safeguards may include reliance on Adequacy Decisions, Standard Contractual Clauses (SCCs), and other legally recognized transfer mechanisms or appropriate safeguards, where applicable, to ensure that international data transfers comply with applicable data protection requirements.
If you would like more information about our international data transfers or the specific safeguards used for such transfers, you may contact us using the contact information provided in this Privacy Policy.
Subject to applicable law and verification requirements, you may have the right to:
Because much of the information processed by the Application is pseudonymous or held by independent service providers, we may need information such as device details, approximate dates of use, or relevant identifiers to locate the correct records. We will not request unnecessary information for verification.
To exercise a right, email alltasks.tachmet@gmail.com and describe the request and the Application involved. We generally intend to respond within 30 days. Where additional verification is necessary or a request is complex, the response period may be extended where permitted by law, and we will provide an appropriate update.
For information controlled directly by Firebase, an advertising provider, AppsFlyer, Cloudflare, or another third party, we may need to forward the request to that provider or ask you to contact the provider directly.
The application is intended for users aged 13 or older. It is not directed to children under 13.
We may revise this Policy when the Application, its services, legal requirements, or operational practices change.
The “Last Updated” date at the top of this Policy indicates when the current version took effect. Your continued use of the Application after a revised Policy becomes available may be treated as acceptance of the revised Policy to the extent permitted by law.
For questions about this policy, contact:
Zentro Studio
Email: alltasks.tachmet@gmail.com