Privacy Policy for Mnemocode

This Privacy Policy applies solely to the mobile application Mnemocode (package identifier: com.nexsolabs.mnemocode), published and maintained by Nexso Labs ("we", "our", or "us").

Mnemocode is a cognitive brain-training and memory puzzle game built upon the scientifically recognized N-Back working-memory paradigm. Players unlock an ancient cipher wheel by tracking multi-sensory signals (dial window position, Egyptian symbols, and musical tones) across progressive difficulty tiers.

Nexso Labs firmly upholds privacy-by-design and data minimization principles. Mnemocode is engineered as a 100% offline, standalone application. We do not require accounts, logins, email addresses, phone numbers, or any form of user identification.

Nexso Labs does not collect, record, transmit, or monetize any personal data when you use Mnemocode.

Specifically, the application does NOT collect:

• Personal Identifiers: No name, email, phone number, physical address, username, or contact information.
• Sensitive Information: No biometric identifiers, financial details, credit card numbers, or government IDs.
• Precise or Coarse Location: No GPS coordinates, Wi-Fi location, cellular tower triangulation, or IP geolocation.
• Device or Hardware Identifiers: No IMEI, MAC address, Google Advertising ID (GAID), or hardware serial numbers.
• Media and Files: No access to your photos, camera, microphone, documents, or external storage.

In compliance with Google Play Store standards, we disclose all Android OS permissions requested by Mnemocode:

• android.permission.VIBRATE
  Purpose: Used exclusively to deliver subtle tactile haptic feedback when tapping dial buttons, confirming memory matches, and signaling gameplay transitions. This permission does not access or store any user data. You may disable tactile vibration at any time in the in-game settings.

Notice on Network Permission: Mnemocode does not request android.permission.INTERNET. The game runs completely offline without any internet connection.

All game state is stored strictly on your local device within the application's isolated sandbox storage using Android SharedPreferences and internal data structures:

• Gameplay Progress: Unlocked difficulty levels (1 through 6), completed rounds, high scores, accuracy statistics, and combo streaks.
• Archivist Relics & Perks: Unlocked passive modifiers (e.g. Mnemo-Focus, Memory Echo, Cryo-Buffer).
• User Preferences: Audio toggle, haptic vibration toggle, interface language selection, and response mode settings.

This information is private to your smartphone or tablet and is never shared, synced, or backed up to external servers by Nexso Labs.

For complete transparency with the Google Play Store Data Safety form, the table below summarizes our technical declarations:

* Summary for Google Play Console: "Does your app collect or share any user data?" → No.

Unlike applications monetized through behavioral advertising or heavy telemetry tracking, Mnemocode operates cleanly:

• No Advertising SDKs: We do not integrate Google AdMob, Unity Ads, AppLovin, or any advertising network. The app contains zero ads.
• No Third-Party Analytics: We do not integrate Firebase Analytics, Google Analytics, Adjust, AppsFlyer, or Mixpanel.
• No Social Media SDKs: We do not include Facebook SDK, Meta Graph, or social tracking pixels.
• Standard Android APIs: The app utilizes standard Android Jetpack and Jetpack Compose libraries provided by Google LLC, operating in a local, self-contained runtime environment.

Mnemocode is designed as a brain-training and puzzle application suitable for general audiences of all ages, including families and students.

We fully comply with the United States Children's Online Privacy Protection Act (COPPA) and European Union General Data Protection Regulation (GDPR Article 8):

• We do not collect personal data from any user, including children under 13 (or under 16 in the EEA).
• The game does not contain behavioral advertisements, interest-based tracking, or links to third-party ad content.
• No personal data or profile creation is possible within the game.

If a parent or guardian has any concerns regarding their child's interaction with the app, they may contact us directly at nexsolabs@ukr.net.

Because Nexso Labs does not store any user information on remote cloud servers, users maintain total, direct control over all data generated by Mnemocode:

1. To Clear All Game Data:
   Open your device's Settings > Apps > Mnemocode > Storage & cache > Clear Storage (or Clear Data). This immediately resets all progress, relics, and settings to original factory defaults.
2. To Permanently Delete All Information:
   Uninstalling Mnemocode from your device permanently purges the local sandboxed database and all configuration files from your device storage.
3. Cloud Data Inquiries:
   Because no cloud records exist, there is no remote account or database record to purge. If you have any inquiries, email us at nexsolabs@ukr.net with the subject "Data Query - Mnemocode".

Regardless of your geographic jurisdiction, Nexso Labs respects your statutory data protection rights:

European Union & United Kingdom (GDPR / UK GDPR)

• Right of Access & Rectification: Since no personal data is collected or held by us, no profile exists to access or correct.
• Right to Erasure ("Right to be Forgotten"): Handled automatically and instantly via device uninstallation or local storage clearance.
• Right to Object & Restrict Processing: No data processing occurs outside your immediate local device.

California Residents (CCPA / CPRA)

• We do not sell, rent, or exchange personal information with any third party.
• We do not share personal information for cross-context behavioral advertising.
• We do not collect or process sensitive personal information.

The safety of your device and privacy is our highest technical priority. Mnemocode relies on Android's robust application sandbox architecture:

• All game preferences and level progress are written into isolated, private internal storage accessible only by Mnemocode.
• Operating system security boundaries prevent unauthorized inspection, modification, or extraction by other third-party applications.
• Because the application does not transmit data over the network, it is immune to interception, eavesdropping, and man-in-the-middle (MITM) vulnerabilities.

We may update this Privacy Policy from time to time to maintain alignment with evolving statutory regulations, Android platform upgrades, or application updates. Any changes will be published immediately on this page with an updated "Effective Date". We recommend reviewing this page periodically. Your continued use of Mnemocode following updates constitutes acceptance of the revised policy.

If you have any questions, feedback, or compliance inquiries regarding this Privacy Policy or Mnemocode, please contact our team: