Last updated: 30th September 2025

This Privacy Policy explains how Nextkey Inc. (“we,” “us,” or “our”) collects, uses, discloses, stores, and retains your information when you use the Hairline AI – Receding? mobile application (the “App”).

By using the App, you agree to the practices described in this Privacy Policy. If you do not agree, please do not use the App.

1. Information We Collect

1.1 Face (Biometric) Data

• What we collect: When you use the App to analyze your hairline, we collect the selfie images you provide and may generate biometric feature measurements (e.g., facial landmarks, distances, ratios) from those images.
• When we collect: Face data is only collected if you voluntarily take and upload a selfie in the App.
• What we do not collect: We do not create or store biometric identity templates. Measurements are generated only for hairline analysis and not used to identify you.

1.2 Other Data

We may also collect:

• Identifiers: Device ID, advertising ID, or account ID.
• Usage Data: Features used, session durations, interaction timestamps.
• Diagnostics: Error logs, performance metrics, OS version, device model.
• Analytics Data: We may use Firebase Analytics to collect aggregated, non-identifying usage statistics to help improve the App.
• Optional Data: Contact details you provide when requesting support.

2. Use of Information

2.1 Use of Face Data

We use your face data for: