Privacy Policy – Trunstor Storage Cleaner

1. Overview & Agreement of Terms

This Privacy Policy applies to Trunstor, a professional storage optimization and junk cleaning utility developed and operated by Trunstor Studio (“We”, “Us”, “Our”). Trunstor core capabilities include scanning app residual cache, uninstall leftover folders, duplicate photos, blurry redundant images, oversized videos and unused installation packages to sort media files and clear junk data to free up mobile storage space.

By downloading, installing, granting storage permissions, launching full storage scans and using all core scrub & clean functions of Trunstor, you confirm that you fully read, understand and voluntarily agree to all clauses of this Privacy Policy. If you disagree with any content herein, please cease all use of the App and uninstall it immediately.

This document complies with Google Play Developer Program Policies, Android MANAGE_EXTERNAL_STORAGE permission regulatory standards, CCPA/CPRA, COPPA, EU GDPR and cross-border global data protection laws for all regional users worldwide.

2. Sensitive Permission Full Disclosure & Functional Justification

2.1 Irreplaceable Functional Necessity

Android native Scoped Storage and MediaStore APIs only provide limited access to public camera media folders, and cannot access hidden app cache directories, residual uninstall folders, external SD media partitions, private download folders and deep hidden duplicate junk media. Without MANAGE_EXTERNAL_STORAGE full-file access authority, Trunstor cannot complete full-device deep junk scanning and lightweight scrubbing, which is the core exclusive function of this storage cleaner.

2.2 Strict Local Privacy Restrictions on File Access

• Trunstor only reads static file metadata during scanning: media name, storage path, file size, format and resolution. The App never reads, parses, uploads or permanently stores the private visual content inside your personal photos and videos.
• No media or junk files will be automatically deleted. All duplicate, blurry and oversized junk candidates are fully displayed to users, every scrub deletion action requires your manual checkbox confirmation before execution.
• All media analysis, duplicate matching and file sorting logic runs fully offline locally on your device CPU and memory; no raw image or video binary data will be transmitted to any remote cloud server under normal use.
• You may revoke the All Files Access permission at any time in system application settings, which will completely disable all media scan, scrub and clean core features of Trunstor.

3. Information We Collect

Trunstor only collects fully anonymous, non-identifiable technical data for App stability maintenance and cross-device compatibility optimization. No personally identifiable sensitive private information will be collected under any circumstances.

3.1 Automatically Collected Anonymous Technical Data

• Device brand, hardware model, Android OS build version and Trunstor App build version
• Anonymous Google Advertising ID (GAID), solely used to deliver non-personalized contextual advertisements without user profiling or cross-device tracking behavior
• De-identified crash logs and performance statistics, exclusively used to fix media scanning loading bugs and device compatibility faults; all logs exclude any private local file content
• Aggregated anonymous usage metrics including scan launch frequency and total cleaned storage capacity; aggregate statistical data cannot be linked to a single unique user or hardware device

3.2 Voluntarily Submitted User Data

We may receive feedback texts, scanning fault descriptions and optional contact email addresses voluntarily submitted by users through the in-app support form, which are only used for technical troubleshooting and after-sales follow-up processing.

3.3 Data We Will Never Collect

Trunstor Studio will never collect real legal names, phone numbers, bank/credit card financial data, government identity documents, contact address books, real-time geographic location, biometric authentication data, private chat history or other confidential personal information of any kind.

4. Lawful Usage of Collected Anonymous Data

All anonymous technical data collected is processed under the lawful basis of legitimate business interest and contractual necessity to deliver core storage cleaning services. We will not reuse anonymous device metadata for unrelated commercial marketing without separate written affirmative opt-in consent submitted via official support channels.

• Provide core storage scrubbing features: duplicate media detection, large file sorting, hidden junk cache scanning and manual redundant media cleanup;
• Optimize cross-hardware compatibility and resolve runtime scanning crash exceptions across all mainstream Android device brands;
• Deliver free non-targeted in-app advertisements via Google AdMob to offset development and operational costs, enabling full-feature free distribution of Trunstor to global users;
• Review user voluntary support feedback to troubleshoot permission detection errors, duplicate media matching failures and device compatibility defects;
• Fulfill mandatory legal disclosure, audit and compliance requirements stipulated by Google Play marketplace and global cross-border privacy regulatory frameworks.

Trunstor Studio will never sell, rent, trade, license or monetize your device metadata, scanned file metadata, anonymous diagnostic logs or voluntary support feedback to third-party advertising agencies, data broker platforms, marketing firms or commercial data aggregators for monetary profit.

5. Third-Party SDK Services

Trunstor only integrates official secure SDKs provided by Google LLC. All data shared with these third-party vendors is fully anonymized non-personal statistical data stripped of all user identity markers. All Google subsidiaries execute legally binding data protection agreements prohibiting unauthorized secondary disclosure or commercial resale of shared device metadata.

• Google Firebase Crashlytics: Collect anonymous crash diagnostic logs to identify and repair runtime scanning bugs and improve overall App stability; this SDK cannot independently access local private media, encrypted documents or raw full-storage file contents without your manually granted All Files Access permission.
• Google AdMob: Serve free non-personalized contextual in-app advertisements; processes only anonymous GAID advertising identifiers to regulate ad display frequency and limit repetitive pop-up ad interruptions during App usage sessions.
• Google Play Billing: Process optional one-time ad-free premium purchases and recurring subscription upgrades; all complete payment transaction data is securely stored and managed exclusively by Google LLC. Trunstor Studio never caches, retains or stores any user credit card numbers, billing addresses or payment credential details on our backend cloud servers.

We may release aggregated anonymized device statistical data without additional user consent only when responding to valid formally issued court orders, official government regulatory data disclosure subpoenas, or when data disclosure is reasonably necessary to protect platform operational security, registered intellectual property rights, or the general personal data safety of all Trunstor end users.

6. Data Storage & Retention Rules

• Temporary scan cache data: Local file scanning indexes and on-device media preview cache stored within Trunstor’s private application sandbox folder are automatically and permanently erased the moment you fully close and exit the Application.
• Anonymous crash & usage analytics logs: Anonymized diagnostic data is retained on encrypted Google cloud backend servers for a fixed maximum retention window of twelve (12) calendar months. Upon 12-month expiration, all log records are permanently auto-deleted from all cloud storage systems with no manual recovery option available.
• User voluntary support feedback records: Messages submitted via the in-app help form are stored for ninety (90) calendar days solely to facilitate follow-up technical support inquiries. After the 90-day retention window expires, all feedback text and associated optional email addresses are fully purged from our internal support databases.
• Local user custom scan preferences: Filter rules, storage size thresholds and hidden folder exclusion lists reside solely on your mobile device’s local storage partition. These preference records are permanently deleted when you manually clear Trunstor’s application storage cache or fully uninstall the software from your device hardware.

Trunstor does not enable automatic cloud synchronization or silent background upload of local device user files by default. All scanned file metadata information remains confined to your mobile hardware and will not be transmitted to remote external servers unless you voluntarily submit feedback content through the built-in in-app support form.

7. Data Security Protection Standards

We implement layered technical, administrative, and operational security safeguards consistent with global information security industry standards to shield anonymous device metadata and local scan cache records from unauthorized access, data leakage, malicious tampering, and permanent irreversible data loss:

• All network data transmission pipelines between your device and third-party Google SDK backend servers utilize TLS 1.3 end-to-end encryption protocols to block packet interception and man-in-the-middle data theft during data transfer sessions.
• Third-party SDK data access channels are strictly isolated via Android operating system runtime permission sandbox restrictions; external integrated tool modules cannot independently read full local storage media files without your manually activated MANAGE_EXTERNAL_STORAGE permission grant.
• Internal backend staff data access control protocols mandate multi-factor identity verification and strict role-based access authority segmentation to limit which team members may review aggregated anonymous statistical log data only.
• Quarterly automated vulnerability scanning operations are performed on Trunstor’s source code and all outbound data transmission pipelines to identify and remediate potential security loopholes in advance of public release App updates.
• A standardized formal data breach emergency response protocol is fully documented and enforced company-wide. In the event of any unauthorized confidential user data exposure incident, all impacted end users and relevant federal/state data regulatory authorities will receive formal written notification within seventy-two (72) hours of breach detection, fully complying with United States state-level data breach notification statutes.

No digital storage or internet transmission system can guarantee 100% absolute invulnerability to data security risks at all times. We strongly recommend all users enable secure screen lock passwords or biometric authentication for your mobile device hardware to prevent unauthorized physical third-party access to local private media gallery and document files stored on your device.

8. User Controllable Privacy Rights

• Restrict anonymous data tracking: Toggle off anonymous crash log reporting and GAID advertising ID tracking functionality through your Android system native privacy settings menu panel.
• Erase local App data: Clear all temporary Trunstor scan cache and custom storage filter preference configurations via your mobile device’s native system application management panel.
• Withdraw storage consent: Revoke the MANAGE_EXTERNAL_STORAGE All Files Access permission at any time inside system App Settings; all core storage scan and media cleanup functionality will be fully disabled immediately following permission revocation.
• Terminate all data collection: Complete full uninstallation of Trunstor from your device hardware will erase all local on-device App preference data and cease all future anonymous technical data collection originating from your hardware permanently.

9. CCPA Consumer Rights for California Residents (USA)

If You are a permanent legal resident of the State of California, United States of America, You hold supplementary statutory privacy rights established under the California Consumer Privacy Act and California Privacy Rights Act:

• The Right to Know: You may submit a formal written request to receive full written disclosure of all categories of non-personal device technical data We collected linked to Your unique hardware GAID advertising identifier over the preceding twelve (12) calendar months;
• The Right to Delete: You may submit a formal written demand requesting permanent full erasure of all anonymous usage statistics and crash log data tied to Your device advertising identifier stored on Our third-party Google cloud server infrastructure;
• The Right to Opt Out of Sale: Trunstor Studio never sells, trades, or monetizes any personal or anonymous user information to commercial third parties for profit. No separate formal opt-out process for data sales activities is required or available to users;
• The Right to Non-Discrimination: Exercising any of Your statutory CCPA privacy rights will not result in discriminatory service limitations, price increases, or restricted access to all free core storage scanning and media cleanup feature sets contained within the Trunstor application.

To submit a formal CCPA data disclosure or permanent deletion request, send a complete written email to Our dedicated privacy support address listed in Section 13 below. We will complete mandatory user identity validation and issue a formal written compliance response within thirty (30) calendar days of receipt of Your fully submitted request.

10. COPPA Children’s Privacy Protection Rules

Trunstor Storage Cleaner is designed, marketed, and intended exclusively for end users thirteen (13) years of age and older. This Application is not targeted, advertised, or directed to minors under the age of 13, fully compliant with the United States Children’s Online Privacy Protection Act (COPPA) federal regulatory requirements.

We will not intentionally, knowingly, or voluntarily collect any personally identifiable information from children under the age of thirteen without verifiable, written parental consent meeting strict COPPA identity verification standards. If You are a parent or legal guardian and discover Your minor underage child has downloaded, installed, or utilized Trunstor without Your formal written approval, contact Our dedicated privacy support email listed below. We will fully delete all child-related stored feedback records and anonymous device usage statistical data within fourteen (14) business calendar days following successful verification of Your legal guardian identity documentation.

11. GDPR Data Subject Rights for EEA, UK & Switzerland

Users located within the European Economic Area, United Kingdom, and Switzerland receive full formal data subject legal protections under the EU General Data Protection Regulation (GDPR). You hold the legal right to formally object to data processing activities carried out under Our legitimate business interest legal basis, request data portability of aggregated anonymous statistical records, demand rectification of inaccurate aggregate device data, and submit a formal written complaint to Your local regional data protection supervisory authority if You believe Trunstor Studio has violated official GDPR privacy compliance standards.

All cross-border data transfers originating from European regional territories utilize European Commission officially approved Standard Contractual Clauses (SCCs) to maintain equivalent data protection compliance levels for all EU-based end users transferring anonymous device data to United States-hosted Google cloud server infrastructure.

12. Policy Update Rules

We reserve the full unilateral legal right to revise, amend, modify, and update this Privacy Policy on a regular periodic basis to align with updated Google Play marketplace platform policies, United States federal and state data protection privacy legislation, global cross-border privacy regulatory frameworks, and functional feature adjustments deployed to Trunstor via official App updates.

Material policy revisions that alter storage data access control rules, MANAGE_EXTERNAL_STORAGE permission usage boundary standards, third-party data sharing scope limitations, or sensitive user data processing compliance rules will be formally announced via in-app pop-up alert notifications delivered to all active App users at least fourteen (14) calendar days before the updated policy officially takes legal effect. Minor textual wording corrections, formatting tweaks, and grammatical revisions will only refresh the “Last Updated” date label located at the top of this document without separate advance user notification alerts.

Your continued active usage of Trunstor’s storage scan, duplicate media identification, and file cleanup functional tools after the revised policy official effective date constitutes Your full voluntary acceptance of all updated privacy clauses contained within this revised Policy document.