Effective Date: November 8, 2025
Last Updated: November 8, 2025
1. Introduction
Welcome to J.F. Dictionary ("we," "our," or "the App"). This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our Android mobile application. The App is an English-Lushai dictionary based on the work of J.F. Laldailova.
By using J.F. Dictionary, you agree to the collection and use of information in accordance with this policy. If you do not agree with our policies and practices, please do not use the App.
2. Information We Collect
2.1 Information You Provide
User-Generated Content:
Search queries and word lookups
Favorite words and history (stored locally on your device)
Feedback and error reports submitted through the contact feature
2.2 Automatically Collected Information
Device Information:
Device model and manufacturer
Operating system version (Android)
Unique device identifiers (Advertising ID)
App version and build number
Device language settings
Usage Data:
App features accessed (e.g., word search, favorites, games)
Session duration and frequency
Crash reports and diagnostic data
Online presence status (when using multiplayer features)
Audio Data:
Microphone access is requested for pronunciation features only when you explicitly use the voice input functionality
Audio recordings are processed locally and are not stored or transmitted to our servers
2.3 Location Information
We do not collect precise location data. General location (country/region) may be inferred from your IP address by third-party services for analytics and ad serving purposes.
3. Third-Party Services and Data Sharing
J.F. Dictionary integrates several third-party services that may collect information used to identify you. These services have their own privacy policies governing the use of your data.
3.1 Advertising Services
Google AdMob
Purpose: Display personalized and non-personalized advertisements
Data Collected: Advertising ID, device information, usage data, IP address
We use the collected information for the following purposes:
4.1 Core Functionality
Provide dictionary lookup and word search features
Store your favorites and search history locally
Enable text-to-speech pronunciation
Facilitate word games and quizzes
Display news and updates related to the dictionary
4.2 Personalization
Remember your app preferences (theme, font size, settings)
Provide personalized word recommendations
Display relevant advertisements based on your interests
4.3 Communication
Send push notifications about app updates, new features, and announcements
Respond to your feedback and support requests
Notify you about important changes to the app or this Privacy Policy
4.4 Analytics and Improvement
Analyze app usage patterns to improve features
Identify and fix bugs and crashes
Measure app performance and user engagement
Conduct research and development for new features
4.5 Legal and Security
Comply with legal obligations and enforce our terms
Protect against fraudulent, unauthorized, or illegal activity
Ensure the security and integrity of our services
5. Data Storage and Security
5.1 Local Storage
The following data is stored locally on your device:
Dictionary database (SQLite)
Favorites and search history
App preferences and settings
Cached content for offline access
5.2 Cloud Storage
Firebase Realtime Database:
Online presence status (session-based, automatically removed on disconnect)
Leaderboard scores and game statistics
User-generated content for multiplayer features
5.3 Security Measures
We implement industry-standard security measures:
HTTPS encryption for all network communications
Secure API authentication with API keys
ProGuard code obfuscation in release builds
Regular security updates and patches
Firebase security rules to protect database access
Note: No method of transmission over the internet or electronic storage is 100% secure. While we strive to protect your data, we cannot guarantee absolute security.
6. Permissions Explained
J.F. Dictionary requests the following Android permissions:
6.1 Required Permissions
INTERNET
Purpose: Access online features (ads, news, API calls, Firebase)
When Used: Throughout app usage for connected features
RECORD_AUDIO
Purpose: Voice input for word search
When Used: Only when you explicitly tap the microphone button
Note: Audio is processed locally and not transmitted or stored
6.2 Conditional Permissions (Android 12 and below)
When Used: Only when you choose to export your favorites
Note: Not required on Android 13+ due to scoped storage
7. Children's Privacy
J.F. Dictionary is a general-audience educational app suitable for all ages. We do not knowingly collect personal information from children under 13 without parental consent.
If you are a parent or guardian and believe your child has provided us with personal information, please contact us, and we will delete such information from our systems.
Third-Party Services: Our advertising partners (AdMob, Meta) are configured to serve age-appropriate, non-personalized ads to users identified as under the age of consent.
Opt out of personalized ads: Device Settings → Google → Ads → Opt out of Ads Personalization
Reset Advertising ID: Device Settings → Google → Ads → Reset Advertising ID
8.2 Data Deletion
To request deletion of data stored in our systems:
Uninstall the app to remove all local data
Contact us at the email below to request deletion of server-side data (e.g., Firebase records)
Opt out of third-party services using their respective privacy controls
8.3 Data Portability
Export your favorites list: Settings → Export Favorites
This creates a text file saved to your device storage
9. Data Retention
Local Data: Retained until you clear it manually or uninstall the app
Firebase Data:
Online presence: Automatically deleted when you close the app
Leaderboard data: Retained indefinitely unless you request deletion
Analytics Data: Aggregated and anonymized data may be retained indefinitely for statistical purposes
Advertising Data: Managed by third-party ad networks according to their retention policies (typically 90-180 days)
10. International Data Transfers
Your information may be transferred to and maintained on servers located outside your country of residence. These countries may have different data protection laws than your jurisdiction.
Third-Party Services: Firebase (Google Cloud), OneSignal, and advertising partners operate globally and may process data in multiple regions.
By using J.F. Dictionary, you consent to the transfer of your information to these jurisdictions.
11. Changes to This Privacy Policy
We may update this Privacy Policy from time to time to reflect changes in our practices or for legal, operational, or regulatory reasons.
Notification of Changes:
Updated "Last Updated" date at the top of this policy
In-app notification for material changes
Continued use of the app after changes constitutes acceptance
Review Regularly: We encourage you to review this Privacy Policy periodically.
12. Third-Party Links
J.F. Dictionary may contain links to external websites or services (e.g., developer's website, social media, Play Store). We are not responsible for the privacy practices of these third parties. Please review their privacy policies before providing any information.
13. Contact Us
If you have questions, concerns, or requests regarding this Privacy Policy or our data practices, please contact us:
Response Time: We aim to respond to all inquiries within 7-14 business days.
14. Legal Compliance
This Privacy Policy complies with:
Google Play Developer Program Policies
Android App Privacy Requirements
General Data Protection Regulation (GDPR) principles
California Consumer Privacy Act (CCPA) guidelines
Children's Online Privacy Protection Act (COPPA)
15. Summary of Key Points
✅ What We Collect: Device info, usage data, search queries, audio (only for voice input)
✅ Why We Collect: Provide dictionary features, show ads, improve the app
✅ Third Parties: Google (AdMob, Firebase), Meta (Audience Network), OneSignal
✅ Your Control: Clear data anytime, opt out of personalized ads, disable notifications
✅ Security: HTTPS encryption, secure storage, regular updates
✅ Children: Safe for all ages, no intentional collection from children under 13
✅ Contact: Reach out anytime with questions or data deletion requests
By using J.F. Dictionary, you acknowledge that you have read and understood this Privacy Policy.
This privacy policy was generated for J.F. Dictionary Android application and is effective as of November 8, 2025.