NCERT Books: Classes 1 to 12 Solutions: Privacy Policy

1. Application Overview & Data Philosophy

Preparation Desk develops focused, distraction free educational applications for students. This Privacy Policy outlines the explicit data handling practices, permissions, and security measures governing the Android application NCERT Books: Classes 1 to 12 Solutions (Package Name: com.preparationdesk.ncert_books).

Our foundational engineering philosophy is simple: your academic preparation is your private endeavor. This application is architected to operate without requiring any user registration, account sign in, profile creation, or sharing of personal details. You can download and read NCERT textbooks and exemplar solutions with complete anonymity.

2. Personal Data We Do NOT Collect

To provide complete transparency and align with Google Play Data Safety standards, we affirm that this application does NOT collect, harvest, log, or transmit any of the following:

• Personal Identity Information (PII): No real names, user handles, passwords, postal addresses, or government identification numbers.
• Contact Details: No email addresses, mobile telephone numbers, or access to your device contact book.
• Precise or Approximate Geolocation: No GPS coordinates, Wi-Fi triangulation, or cell tower location data.
• Biometric & Sensor Data: No fingerprint, facial recognition, camera, or microphone capture.
• Financial & Payment Data: No credit card details, debit card numbers, bank accounts, or UPI identifiers.
• Advertising & Profiling Identifiers: We do not capture or sync Google Advertising ID (AAID) for targeted advertising or third party cross app profiling.

3. Local Storage Architecture & Offline Textbook Cache

This application is designed with an offline first architecture so learners in remote areas or low connectivity classrooms can study reliably. To provide this functionality, the app stores essential study data locally on your device:

• Cached Textbook PDFs: Downloaded NCERT chapters and exemplar PDFs are stored in your device's application scoped private sandbox directory (e.g., via Context.getExternalFilesDir()).
• Reading Progress & Bookmarks: Last read page positions, subject bookmarks, and high yield annotations are recorded locally via encrypted Android Room SQLite database and SharedPreferences.
• User Customizations: Dark mode preference, zoom levels, and language selection (English or Hindi medium) remain strictly on your local device.

Your Local Data Control: You can purge all cached books, bookmarks, and search history at any time via Android App Info Settings → Clear Storage, or by uninstalling the app. We have zero remote access to your stored files.

4. Android Manifest Permissions & Strict Technical Justifications

In compliance with Google Play Store developer policies, below is the complete enumeration and technical justification for every manifest permission requested by com.preparationdesk.ncert_books:

Storage Access Note: This application complies with modern Android Scoped Storage guidelines. It does NOT request dangerous broad storage permissions such as READ_EXTERNAL_STORAGE or MANAGE_EXTERNAL_STORAGE. All chapter downloads stay securely inside app private directories.

5. Children's Privacy & Google Play Families Policy Compliance

Because this application provides textbooks and solutions for students from primary school (Class 1 to 5) through high school (Classes 6 to 12), school children under 13 years of age may use this application:

• COPPA Compliance: We strictly comply with the United States Children's Online Privacy Protection Act (COPPA). We do not collect, request, or maintain personal information from children under 13.
• GDPR for Children: In accordance with European Union General Data Protection Regulation child safety provisions, we do not profile, track, or process children's personal data.
• Families Policy Compliance: This application adheres to Google Play's Families Policy requirements. It does not integrate non certified ad SDKs, behavioral analytics, or location tracking.
• Parental Contact: If a parent or legal guardian has reason to believe that any information was inadvertently transmitted, please contact us immediately at support@preparationdesk.com for prompt resolution.

6. Third Party Services & Developer Libraries

To provide reliable delivery without compromising user privacy, this application relies only on minimal, privacy certified infrastructure:

• Google Play In App Updates (Play Core): Facilitates silent, non intrusive notifications when a new textbook edition, revised syllabus, or bug fix is published.
• Anonymized Crash Telemetry (Optional): In the rare event of an application crash or memory fault, the app may transmit an anonymized OS stack trace (device model, Android OS version, and error line) solely to diagnose and fix technical glitches. Zero personal information is attached.
• No Data Brokers or Marketing Trackers: We do not sell, rent, monetize, or disclose your app usage patterns to data brokers, advertising networks, or educational marketing firms.

7. Data Security & Network Integrity

We implement industry standard security practices to protect your interactions:

• Encrypted Transport: All network requests for chapter PDFs, answer keys, and syllabus indices utilize mandatory HTTPS (TLS 1.3) encryption in transit.
• Cryptographic Checksums: All educational documents are validated against server side cryptographic hashes to prevent tampering or corrupted downloads.
• OS Level Sandboxing: Android sandbox security isolates local cache files from other installed third party applications.

8. Educational Fair Use & Non Affiliation Disclaimer

9. Your Legal Rights & Retention Controls

Depending on your jurisdiction, you possess specific statutory rights regarding your digital privacy under the Indian Digital Personal Data Protection (DPDP) Act, GDPR, and California Consumer Privacy Act (CCPA):

• Right to Non Discrimination: We offer identical access, features, and offline reading capabilities to every learner regardless of their privacy choices.
• Right to Deletion: Because all study data resides exclusively on your local device, uninstalling the app permanently purges all cached files, bookmarks, and local data instantly.
• Right to Inquire: You may at any time email our team to confirm that no personal data or identity records exist on our servers.

10. Policy Modifications & Updates

We may occasionally update this Privacy Policy to reflect app updates, new educational features, or regulatory amendments. Any updates will be published with a revised Effective Date at the top of this document. Continued use of the application following updates indicates your acknowledgment of the revised terms.

11. Contact Information & Grievance Officer

If you have questions, feedback, or grievance inquiries concerning this Privacy Policy or our student data protection standards, please contact us: