1. Introduction & Applicability

This Privacy Policy describes how SpellMaster Pro ("we", "us", "our", or "the Application"), developed by Devang Bhumbhaliya Babubhai, collects, processes, protects, and discloses information when you use our Android mobile application. We are committed to transparency and to complying with the Google Play Developer Distribution Agreement, Google Play User Data Policies, the General Data Protection Regulation (GDPR), the California Consumer Privacy Act (CCPA), and the Children's Online Privacy Protection Act (COPPA).

2. Information We Process & On-Device Operations

SpellMaster Pro prioritizes on-device computation to ensure user text remains private and responsive:

• Offline Frequency Lexicon: The core spell checker operates with an embedded local SQLite database (suggestion_database.sqlite) containing over 180,000 verified English words. Typo detection, candidate generation, and Levenshtein distance computations execute entirely on your device CPU with zero server dependency.
• Pronunciation Audio Studio: Audio playback is synthesized locally using Android's native on-device TextToSpeech service. Dialect rates, pitches, and pronunciations are processed on hardware without transmitting or saving audio files.
• No Keystroke Logging: Words entered into the input fields are processed in temporary volatile memory and are never recorded, profiled, or harvested.
• Voice Dictation: When using voice input, requests are handled directly by Android's built-in system speech recognizer (RecognizerIntent.ACTION_RECOGNIZE_SPEECH). The application does not record raw microphone audio, does not store voice recordings, and does not require the dangerous android.permission.RECORD_AUDIO permission.

3. Optional User-Initiated Network Services

Certain educational tools connect to external services only when explicitly initiated by the user:

• Smart English Dictionary: Online word definitions, synonyms, and phonetic etymologies query public educational endpoints (such as api.dictionaryapi.dev and api.datamuse.com). These requests do not transmit personal user identifiers, account credentials, or tracking cookies. If the device is offline, the app automatically falls back to its local definitions.
• Speak & Translate: When you initiate text translation, the input text is transmitted securely over an encrypted HTTPS connection to translation endpoints to generate the translation. Translated phrases are not stored or profiled on remote servers.

4. Third-Party Advertising (Google AdMob)

To support ongoing updates, lexicon improvements, and free accessibility, SpellMaster Pro may display advertisements served by Google AdMob and its certified advertising technology partners.

• Advertising Identifiers & Telemetry: In accordance with Google Play Developer Policies, Google AdMob may automatically collect and process pseudonymous identifiers, such as the Google Advertising ID (AD_ID / GAID), IP address, general device telemetry (device brand, model, screen resolution, operating system version), and coarse regional location. This information is used to serve relevant contextual or personalized ads, limit ad frequency, and detect invalid traffic or ad click fraud.
• Separation of Educational Content: Your personal input text, spell-check queries, dictionary lookups, voice inputs, and translations are NEVER shared with, exposed to, or accessible by Google AdMob or any advertising networks.
• User Advertising Controls & Opt-Out: You have full control over interest-based advertising on Android:
  • You can reset or completely delete your Advertising ID at any time via your device settings: Settings > Google > Ads > Reset or Delete advertising ID.
  • On Android 12 and above, deleting your advertising ID prevents apps from accessing it, ensuring you receive only contextual advertisements.
• For comprehensive information regarding how Google processes advertising data, please review Google's Privacy Policy and How Google uses information from sites or apps that use our services.

5. Android Device Permissions

SpellMaster Pro adheres to the principle of least privilege. The application requests only the permissions necessary to function:

• android.permission.INTERNET: Enables online dictionary lookups, translation requests, and ad retrieval.
• android.permission.ACCESS_NETWORK_STATE: Checks whether the device is connected to the internet to gracefully switch between online services and offline SQLite mode.
• android.permission.VIBRATE: Provides subtle tactile haptic feedback during interactive controls and sliders.
• com.google.android.gms.permission.AD_ID: Standard permission declared in modern Android versions (API 33+) to allow Google AdMob to deliver ads in compliance with Google Play governance.
• No Sensitive Permissions: SpellMaster Pro does not request access to camera, microphone (RECORD_AUDIO), GPS location, phone state, contacts, or local file storage.

6. Data Security Safeguards

We implement multiple layers of security to protect your data:

• All network requests for dictionary lookups, translations, and advertisements utilize strict encrypted HTTPS (TLS) connections.
• On-device computation runs within Android's sandboxed application environment, preventing unauthorized access by other applications.
• The application binary is signed with Google Play App Signing and protected by ProGuard/R8 code optimization and obfuscation.

7. Children's Privacy (COPPA Compliance)

SpellMaster Pro is designed for general audiences, students, and language learners. We do not knowingly collect personal information from children under the age of 13. When operating in family-directed modes or when required by Google Play Families Policy, ad requests are configured to request non-personalized, family-safe advertisements in compliance with COPPA and Google Play Families guidelines.

8. Data Retention & User Rights (GDPR & CCPA)

Because SpellMaster Pro does not maintain user accounts or store personal information on remote servers, we do not retain your personal data. Users retain the following rights:

• Local Cache Clearing: You can wipe all locally cached data, settings, and temporary lookups at any time through Android Settings > Apps > SpellMaster Pro > Storage > Clear Storage.
• Right to Non-Discrimination: We do not sell your personal information, and your use of SpellMaster Pro remains fully functional regardless of your privacy choices.

9. Changes to This Privacy Policy

We may update this Privacy Policy from time to time to reflect feature enhancements, new releases, or regulatory modifications. Any changes will be posted directly to this URL with a revised "Last Updated" timestamp.

10. Developer Contact & Support

If you have any questions, suggestions, or concerns regarding this Privacy Policy or SpellMaster Pro, please contact us directly:

Developer: Devang Bhumbhaliya Babubhai
Email: devangrabari7072@gmail.com
Official Developer Portal: https://devang7072.github.io/