Saturated Vapor Pressure Tool - Privacy Policy

1. App Overview

"Saturated Vapor Pressure Tool" is a Flutter-based application designed for vapor pressure calculations and related utilities. It supports advertisements and in-app purchases. Most computations are performed locally on the device to ensure user privacy.

2. Scope of This Privacy Policy

This privacy policy applies to all users of Saturated Vapor Pressure Tool across all devices and platforms. By using the app, you agree to the terms described herein. This policy explains what information we collect, how it is used, and your rights regarding your personal data.

3. Data Collection and Use

The app collects minimal personal data necessary to provide core functionality and enhance user experience:

• Google Account Email & UID: Collected via Google Sign-In (Firebase Authentication) for user identification, subscription verification, and cross-device synchronization. Data is stored securely in Firebase Firestore and transmitted using HTTPS.
• In-App Purchases: Payment information is handled by Google Play Billing. Saturated Vapor Pressure Tool does not store credit card or payment details locally.
• Advertisements: Google AdMob may collect device information, network information, and ad interaction data for personalized ad delivery and performance analytics. Users may reset their Advertising ID or opt out of personalized ads in device settings.
• Local Storage: The app may store user preferences or settings locally using shared_preferences. No personally identifiable information is stored locally.

4. Data Security

We take reasonable measures to protect your data against unauthorized access, disclosure, alteration, or destruction:

• All sensitive information is transmitted via HTTPS to ensure secure communication.
• Data stored in Firebase Firestore is protected by Firebase Security Rules, restricting access only to authenticated users where appropriate.
• Regular backups and access logging are maintained to ensure data integrity and auditability.

5. User Rights

Users have the following rights regarding their personal data:

• Access: You may request a copy of your personal data stored by the app.
• Correction: You may request correction of any inaccurate data.
• Deletion: You may request deletion of your personal data, including your Google email and associated information in Firebase Firestore. Deletion requests will be processed securely, and a record will be generated for audit purposes.

To exercise these rights, please contact the developer (see Section 9). Requests will be handled in a timely manner, typically within 30 days.

6. Data Retention

We retain user data only as long as necessary to provide app functionality and comply with legal obligations. Data no longer needed or requested for deletion will be securely removed from our servers.

7. Third-Party Services

Saturated Vapor Pressure Tool may use the following third-party services that collect or process data on behalf of the app:

• Google AdMob (advertising)
• Google Play Billing (in-app purchases)
• Firebase (authentication, cloud storage, analytics)

Each service has its own privacy policy, and users are encouraged to review them:

• Google Privacy Policy
• Firebase Privacy Policy

8. Ads and Personalization

Advertisements may be personalized based on device and usage data. The app itself does not collect additional personally identifiable information for advertising purposes beyond what AdMob collects. Users can control ad personalization through device settings.

9. Children’s Privacy

This app is not directed to children under the age of 13. We do not knowingly collect personal information from children. Parents or guardians should supervise children’s use of the app.

10. Updates to This Policy

We may update this privacy policy periodically to reflect changes in our practices or legal requirements. Users are encouraged to review the latest version within the app or on our website.

11. Contact Information

If you have questions or concerns about this privacy policy or your personal data, please contact the developer:

Email: zhdong0407@gmail.com