Privacy Policy

1. Information We Collect

WaterKit ("App") collects minimal personal information necessary to provide its services:

• Profile Information: Name, weight, gender, and activity level that you voluntarily provide to calculate your recommended daily hydration goal.
• Hydration Data: Drink records (type, amount, timestamp) that you log within the App.
• Health Data: With your explicit permission, the App reads and writes dietary water intake and caffeine intake data to Apple Health (HealthKit), and reads only active energy burned, body mass, and biological sex data.

2. How We Use Your Information

Your information is used solely to:

• Track and display your daily hydration progress
• Calculate personalized hydration goals
• Send hydration reminders
• Generate statistics and insights about your drinking habits
• Sync data across your devices via iCloud
• Write hydration data to Apple Health

3. Data Storage and Security

All your data is stored locally on your device using SwiftData. If iCloud Sync is enabled, your data is encrypted and stored in your personal iCloud account using CloudKit. We do not have access to your iCloud data. Data shared with the Widget and Apple Watch is transferred through a shared App Group container using UserDefaults.

4. Third-Party Sharing

We do not sell, trade, or share your personal information with third parties. Your data remains on your device and in your personal iCloud account.

5. HealthKit Data

The App uses HealthKit to:

• Read dietary water, caffeine, active energy, body mass, and biological sex data (with your permission)
• Write dietary water and caffeine data to Apple Health (with your permission)

Health data is never shared with third parties. You can revoke HealthKit access at any time in the iOS Settings app under Privacy & Security → Health.

6. Notifications

The App sends local notifications for hydration reminders. These are processed entirely on your device. We do not use push notification services that transmit data to external servers. You can disable or manage notification permissions at any time in your device's Settings.

7. Data Retention and Deletion

Your data is retained as long as you use the App. You can delete your data at any time by:

• Deleting individual drink records within the App
• Uninstalling the App, which removes all local data
• Managing iCloud data through your iCloud settings

8. Children's Privacy

The App is not directed at children under the age of 13. We do not knowingly collect personal information from children under 13.

9. Your Rights

Depending on your jurisdiction, you may have the right to access, correct, or delete your personal data. Since all data is stored locally on your device or in your personal iCloud, you have full control over your data at all times.

10. Changes to This Policy

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

11. Contact

If you have any questions about this Privacy Policy, please contact us at jusuoli2006@163.com.