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Privacy Policy

Cortex - Last updated: March 8, 2026

1. Introduction

NERON ("we", "our", or "us") operates the Cortex mobile application ("the App"). This Privacy Policy explains how we handle your information when you use Cortex.

Cortex is designed with privacy as a core principle. All AI processing happens entirely on your device. No conversation data, prompts, or AI responses ever leave your phone.

2. Information We Collect

2.1 Data Stored On Your Device

The following data is stored locally on your device and is never transmitted to any server:

  • Conversations: All chat messages and AI responses are stored in a local SQLite database on your device.
  • AI Models: Downloaded model files are stored in your device's local storage.
  • App Settings: Your preferences (language, haptic feedback, active model) are stored locally.
  • Purchase Status: Whether you have purchased Cortex Pro is cached locally for instant access.

2.2 Data We May Process

  • Purchase Information: When you make a purchase, the transaction is processed by Apple through the App Store. RevenueCat, our purchase management provider, receives anonymous purchase data to manage entitlements. We do not receive your payment details.

2.3 Data We Do NOT Collect

  • We do not collect your conversations or prompts
  • We do not collect personal information or email addresses
  • We do not collect usage analytics or telemetry
  • We do not collect device identifiers for tracking
  • We do not use any advertising SDKs
  • We do not have accounts — there is nothing to sign up for

3. How AI Processing Works

Cortex uses on-device AI inference powered by llama.rn. When you send a message:

  1. Your message is processed by the AI model running locally on your device
  2. The AI generates a response using your device's processor (CPU/GPU)
  3. The conversation is saved to a local database on your device
  4. No data is sent to any external server at any point during this process

4. Third-Party Services

  • RevenueCat: Manages in-app purchase entitlements. Receives anonymous purchase data from Apple. See RevenueCat Privacy Policy.
  • Apple App Store: Handles payment processing for purchases. See Apple Privacy Policy.
  • Hugging Face: AI model files are downloaded from Hugging Face servers. Only the model download request is made — no user data is transmitted.

5. Data Storage and Security

All your data is stored locally on your device using SQLite and MMKV (encrypted key-value storage). Data is protected by your device's built-in security (passcode, Face ID, Touch ID).

Deleting the app will permanently remove all locally stored data including conversations, settings, and downloaded models.

6. Your Rights

You have complete control over your data:

  • Access: All your data is on your device — you have full access at all times
  • Delete: Delete individual conversations in the app, or delete all data by uninstalling
  • Portability: Your data never leaves your device, so there is nothing to export from our servers

7. Children's Privacy

Cortex is not intended for children under 13. We do not knowingly collect any personal information from anyone, including children.

8. Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by updating the "Last updated" date.

9. Contact Us

If you have questions about this Privacy Policy, contact us at: [email protected]