1. Data We Collect

NailInsight may collect the following categories of data:

• Account information: Email address and user identifier when you sign in with Google or Apple.
• Usage data: Daily check-ins and habit tracking records.
• Photos: Only when you choose to upload them for nail analysis features.
• Purchase history: Premium subscription status.
• Crash diagnostics: Anonymous technical information used to improve stability.

2. How We Use Data

• To create and manage your account.
• To provide habit tracking and personal statistics.
• To improve app performance and reliability.
• To deliver premium subscription features.

3. Data Sharing

Your personal data is not sold to third parties. The following providers may process limited data to operate the service:

• Google Firebase: Authentication, database, and crash reporting infrastructure.
• Apple: Sign-in and payment processing.

4. Data Security

Your data is stored using Firebase infrastructure with industry-standard security controls.

5. Data Deletion

You can delete your account and related data from the in-app account settings. If you need help, use the support page.

6. Children's Privacy

The app is not intended for children under 13, and we do not knowingly collect personal data from children in that age group.

7. Changes

This privacy policy may be updated from time to time. Material changes may be communicated in the app.

8. Contact

For privacy-related questions or requests, please use the support page.