Privacy Policy for HydraTrack – Water Reminder
Last Updated: January 28, 2026
Introduction
Welcome to HydraTrack – Water Reminder (“we,” “our,” or “us”). We value your privacy and are committed to protecting your information. This Privacy Policy explains how information is collected, used, stored, and safeguarded when you use our mobile application.
By using HydraTrack, you agree to the practices described in this Privacy Policy.
To provide core hydration tracking functionality, HydraTrack requires the following information:
- Profile information: age, gender, weight, activity level, and preferred unit system (metric or imperial)
- Hydration preferences: daily water intake goal, cup size, wake-up time, bedtime, and reminder settings
- Account information: if you choose to sign in with Google, we receive your email address and display name from your Google account
- Water intake logs: timestamps and amounts of water you log in the app
- Device information: limited technical information required for app functionality
- Usage analytics: aggregated and anonymized app usage data collected through Firebase Analytics
The app automatically uses the collected information to:
- Calculate personalized daily hydration goals on your device
- Track and display hydration history and progress
- Send hydration reminders based on your preferences
- Sync data across devices if you sign in with Google
- Process in-app purchases and manage premium subscriptions
- Improve app functionality and stability
- Display widgets showing hydration progress
All calculations and reminders are handled automatically by the app. No human review of your data occurs.
Data Storage and Security
Local Storage
Hydration data and preferences are stored locally on your device using secure Android storage mechanisms such as Room Database and DataStore.
Cloud Storage
If you sign in with Google, your data is securely synced to Google Firebase Firestore. This allows access across multiple devices and data restoration when switching devices.
Data Security
We take reasonable measures to protect your information. Data stored on your device is protected using Android’s built-in security mechanisms. Data synced to the cloud is protected using Google’s industry-standard security practices.
Third-Party Services
HydraTrack uses the following third-party services:
- Google Firebase (authentication, cloud storage, analytics)
- Google Play Billing (subscription processing)
- Google Play Services (core app functionality)
Privacy policies:
- https://policies.google.com/privacy
- https://firebase.google.com/support/privacy
In-App Purchases
Premium subscriptions are processed through Google Play. We do not collect or store payment information.
Data Retention
- Local data remains on your device until the app is uninstalled or app data is cleared
- Cloud data remains until you delete your account or request deletion
Your Rights and Choices
You can:
- Access and modify your data in the app
- Delete individual logs or your entire account
- Disable notifications
- Use the app without signing in (local storage only)
Children’s Privacy
HydraTrack is not intended for children under 13. We do not knowingly collect personal data from children.
Changes to This Privacy Policy
We may update this policy from time to time. Changes will be reflected by updating the “Last Updated” date.
If you have questions or requests regarding this Privacy Policy, contact us at:
hydratrack.app@gmail.com