Periodic Table Explorer Privacy Policy
Application ID / Package: com.pwk.periodictableexplorer
1. Introduction & Overview
Periodic Table Explorer ('we', 'our', or 'the App') is committed to protecting the privacy of our users, including students, teachers, and chemistry enthusiasts. This Privacy Policy explains how our application handles information and data when you use the mobile application (Package ID: com.pwk.periodictableexplorer). Periodic Table Explorer operates on a strict privacy-first architecture: zero personal data collected, no account required, and 100% offline core functionality.
2. Information We Collect
We outline below the data practices, categories, and identifiers associated with Periodic Table Explorer:
Information We Do NOT Collect (Zero Personal Data)
Optional / Local- First or last name
- Email address or physical address
- Phone numbers or contacts list
- GPS or precise location data
- Photos, camera access, audio recordings, or device files
- Financial, banking, or payment card details
- Biometric data or personal profiles
Purpose: The App does not collect, transmit, store, or sell any Personally Identifiable Information (PII). You do not need to create an account or log in to use any feature in the App.
Local Data Storage on Your Device (SharedPreferences)
Optional / Local- Favorites / Bookmarks: Elements starred for quick review and study
- Quiz Statistics: Current score, streak count, accuracy rate, and session counter
- User Preferences: Theme choice (Dark Mode / Light Mode), Haptic Feedback (vibrations), Sound Effects toggle, and display settings (Atomic Mass & Electron Config toggles)
Purpose: The App stores non-personal app preferences and study progress locally on your device via standard SharedPreferences. This data never leaves your device and is never uploaded to external servers. You can erase this data at any time by clearing the App's data in Android settings or by uninstalling the application.
Third-Party Advertising Data (Google AdMob SDK)
Required / Core- Device identifiers (e.g., Google Advertising ID / AAID / IDFA)
- IP address (used strictly for approximate / country-level ad serving and fraud detection)
- Ad interaction and performance metrics (views, clicks, impressions)
- Crash logs and app performance diagnostics
Purpose: To support ongoing maintenance and provide the app free to learners worldwide, the App integrates Google AdMob (Google Mobile Ads SDK) to display App Open, Anchored Banner, Interstitial, and optional Rewarded Ads (which provide 50:50 lifelines in the chemistry quiz). AdMob App ID: ca-app-pub-1063071230306366~4799205538.
Analytics & Tracking SDKs (Zero Analytics)
Optional / Local- No Google Analytics or Firebase Analytics integrated
- No Facebook SDK or social tracker integration
- No cross-app user tracking or behavioral profiling
Purpose: We do not use any third-party behavioral analytics or telemetry SDKs to monitor your learning activities inside the application.
3. How We Use Information
- Deliver 100% offline access to all 118 chemical elements, Bohr atomic models, electron configurations, comparisons, and periodic trends.
- Save study bookmarks, quiz statistics (scores, streaks, accuracy rate), and user preferences strictly on local device storage.
- Display family-safe advertisements via Google Mobile Ads (AdMob) to keep the educational application completely free for students and teachers.
- Provide optional Rewarded Video Ads allowing users to unlock 50:50 hints during chemistry quiz sessions.
4. Third-Party SDKs & Service Providers
Periodic Table Explorer integrates third-party SDKs and service providers to enable core capabilities and advertising support. We do not sell your personal information.
Displays advertising formats (Banner, Interstitial, App Open, and Rewarded video ads for quiz 50:50 lifelines). AdMob App ID: ca-app-pub-1063071230306366~4799205538.
Governs how Google handles advertising data and technology across mobile applications.
Allows users to manage ad personalization preferences or opt out of personalized ads.
Provides clean typography rendering (Poppins & Inter fonts) for chemistry tables and UI cards.
5. Data Security Practices
- Zero Cloud Databases: No user personal information is ever transmitted to or stored on external cloud servers.
- Local Isolation: Bookmarked elements and quiz preferences are securely stored within the Android application sandbox via SharedPreferences.
- Encrypted Ad Communications: All ad requests communicated by the Google AdMob SDK are encrypted in transit via standard HTTPS/TLS.
- Minimal System Permissions: The application requests only the minimal system permissions strictly required for ad loading (INTERNET) and tactile feedback (VIBRATE).
6. Data Retention Policy
We do not maintain any cloud databases or external user records for Periodic Table Explorer. All user-generated data (bookmarked elements, quiz statistics, and settings) resides strictly in your device's local SharedPreferences. This data is retained only as long as the application remains installed on your device. Clearing app storage or uninstalling the app permanently erases all local data immediately.
7. Account & Data Deletion Rights
Users can delete all locally stored preferences, quiz records, and element bookmarks at any time by clearing application data in device settings or uninstalling the application. Learn more on our dedicated data safety page:
8. Children's Privacy Notice
Periodic Table Explorer is designed for general audiences and educational use by students of all ages. We do not knowingly collect any personally identifiable information from children under the age of 13. Advertisements displayed within the app are configured to adhere to Google Play Families Policy and COPPA guidelines for family-safe, educational viewing. If a parent or guardian believes that non-compliant data has been collected, please contact us immediately at officialworldwithtechnology@gmail.com and we will take appropriate measures.
9. Your Data Rights & Choices
- Local Data Erasure: You can erase all local bookmarks, quiz statistics, and preferences at any time by clearing the App's data/cache in your Android device settings or by uninstalling the application.
- Ads Personalization Opt-Out: You can opt out of personalized ads at any time via your device's Google Settings > Ads > Opt out of Ads Personalization or by visiting https://adssettings.google.com.
- Haptic Feedback (Vibration) Control: You can toggle tactile haptic vibration on or off at any time in the app Settings.
- Sound Effects Control: You can mute or enable quiz audio sound effects in Settings.
- Display Customization: You can enable or disable Atomic Mass and Electron Configuration values on the periodic table grid.
10. International Data Transfers
Because Periodic Table Explorer does not operate cloud servers, no user account data is transferred across borders. Third-party ad requests processed by Google AdMob are handled across Google's secure global infrastructure in accordance with Google's Privacy Policy.
11. Changes to This Privacy Policy
We may update our Privacy Policy periodically to reflect changes in legal requirements, features, or third-party service policies. Any changes will be posted on this page with an updated 'Last Updated' date.
12. Privacy Contact & Inquiries
If you have any questions or concerns regarding this Privacy Policy or data handling practices for Periodic Table Explorer, please reach out to our privacy team: