Last Updated: June 2026

1. Introduction

Luna Sync ("we," "our," or "us") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our mobile application (the "App").

Our Promise: Your health data never leaves your device without your explicit consent. We do not sell, rent, or share your personal data with third parties for their marketing purposes.

2. Information We Collect

2.1 Information You Provide

• Cycle Data: Menstrual dates, symptoms, moods, energy levels, and notes you voluntarily record
• Account Information: If you create an account, we may collect your email address
• Feedback & Support: Any information you provide when contacting us

2.2 Information Collected Automatically

• Usage Data: Anonymous analytics about app usage (e.g., features accessed, session duration)
• Device Information: Device model, iOS version, language settings (for app optimization only)

2.3 HealthKit Data

If you enable HealthKit integration, the App may read or write menstrual cycle data to Apple Health. We do not have access to your HealthKit data — it is processed entirely on your device. You can revoke HealthKit permissions at any time in your device Settings.

3. How We Use Your Information

We use the collected information solely to: