# Privacy Policy for Kindle Reader
**Last Updated:** October 20, 2026
**Effective Date:** October 20, 2026
## 1. Introduction
This Privacy Policy explains how **Kindle Reader** ("the App", "we", "our", or "us") handles, collects, and protects your information when you use our Android mobile application (Package Name: `com.aistudio.kindlereader.ebkrd`).
We believe your reading habits and personal notes should remain private. Kindle Reader is designed as a local-first e-book and document reader that operates primarily on your device without requiring you to create an account or provide personal information.
By installing and using the App, you agree to the practices described in this Privacy Policy.
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## 2. Information We Do NOT Collect
We do not collect, store, sell, or rent any of the following personal information:
- **No Personal Identifiers:** We do not collect your name, email address, physical address, phone number, or government IDs.
- **No Account Registration:** You can use all core features of the App without registering, creating a profile, or logging in.
- **No Financial Data:** The App does not collect or process credit card details or banking information.
- **No Sensitive Device Permissions:** The App does not request access to your location, camera, microphone, contacts, or phone state.
- **No Tracking for Advertising:** We do not include third-party advertising networks (such as AdMob or Unity Ads) or tracking SDKs to profile you across other apps or websites.
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## 3. Information Handled by the App
### A. Local Documents and Files (PDF, EPUB, TXT, Markdown)
- **Document Access:** When you open or import a book or document into the App, you explicitly select it using the Android system file picker (Storage Access Framework) or by opening a document directly from your device storage.
- **Local Storage:** Selected documents are imported into the App's private internal storage sandbox on your device (`context.filesDir`). These documents are processed locally on your device and are never uploaded to any remote server operated by us.
### B. Reading Data and Annotations
- **Local Database:** Your reading progress (e.g., current page, reading percentage, chapters), bookmarks, highlights, text annotations, and reading settings (e.g., theme, font size, line spacing) are stored exclusively on your device in a local SQLite database (via Android Room).
- This data remains strictly on your device and is never synchronized to external servers unless you manually export notes or documents.
### C. Artificial Intelligence (AI) Features (Google Gemini API)
- **User-Initiated Text Processing:** Kindle Reader includes optional AI-assisted features (such as "Explain Passage", "Summarize Text", and AI neural text-to-speech).
- **Data Transmitted:** When—and only when—you explicitly request an explanation or audio synthesis for a selected passage, the selected excerpt and its immediate context are securely transmitted over HTTPS to the **Google Gemini API** (`generativelanguage.googleapis.com`) to generate the explanation or audio response.
- **No Account or PII Attached:** No personal identifying information (no name, email, or user identifier) is attached to these API requests.
- **Third-Party Processing:** Text sent to the Google Gemini API is processed by Google LLC in accordance with Google's API Terms of Service and Privacy Policy. For more details on how Google processes data, please visit [Google Privacy Policy](https://policies.google.com/privacy).
### D. Device Text-to-Speech (TTS)
- The App supports reading text aloud using your device’s built-in Android Text-to-Speech engine. This service operates locally on your device without transmitting spoken text externally.
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## 4. Device Permissions Used
The App requests only the minimum permissions necessary to function:
| Permission | Purpose |
| :--- | :--- |
| `android.permission.INTERNET` | Required exclusively to connect with the Google Gemini API over encrypted HTTPS when you invoke AI explanations or AI voice synthesis. |
| `android.intent.action.TTS_SERVICE` (Query) | Queries available text-to-speech services installed locally on your Android device to power the read-aloud feature. |
*Note: Kindle Reader does NOT request broad external storage permissions (`MANAGE_EXTERNAL_STORAGE` or `READ_EXTERNAL_STORAGE`). File selection relies on the secure Android Storage Access Framework.*
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## 5. Third-Party Services and SDKs
The App may integrate the following third-party provider:
- **Google Gemini API / Google Play Services (Google LLC)**
- **Purpose:** Powering generative AI text explanation and neural voice synthesis when requested by the user, as well as providing app integrity verification (Firebase App Check).
- **Privacy Policy:** https://policies.google.com/privacy
We do not sell, rent, or share any personal data with third-party data brokers or advertisers.
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## 6. Data Retention and Deletion
Because all your documents, reading history, and highlights are stored locally on your device:
- **In-App Deletion:** You can delete any book, document, highlight, or note at any time directly within the App's library and reader screens.
- **Complete Data Deletion:** You can permanently delete all local data, settings, and imported books at any time by:
1. Opening your device **Settings**.
2. Navigating to **Apps** > **Kindle Reader** (or your app title).
3. Selecting **Storage & cache** > **Clear Storage / Clear Data**.
4. Alternatively, uninstalling the App will completely remove all application sandboxed data from your device.
Since we do not maintain accounts or server-side databases, no residual user data remains on our servers.
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## 7. Data Security
We take reasonable and appropriate technical measures to protect your data:
- All communications with the Google Gemini AI API are encrypted in transit using Transport Layer Security (TLS / HTTPS).
- Local files and reading databases are kept in the App's private internal storage sandbox, isolated from other applications by the Android security model.
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## 8. Children's Privacy
Kindle Reader does not target children under the age of 13 (or under 16 in the European Union), nor do we knowingly collect any personal identifiable information from children. If you believe that personal data has been inadvertently collected, please contact us immediately so we can investigate and address the matter.
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## 9. Changes to This Privacy Policy
We may update this Privacy Policy from time to time. The updated policy will be posted on this page with an updated "Last Updated" date. We encourage you to review this Privacy Policy periodically.
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## 10. Contact Us
If you have any questions, concerns, or requests regarding this Privacy Policy or your data, please contact us at:
Studio : Naruto Studio
-Email: ikramrind15@gmail.com
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