Crystal Stack

Last Updated: March 22, 2026

Introduction

This Privacy Policy describes how Crystal Stack ("we", "our", or "us") handles information when you use our mobile game Crystal Stack (the "Game") available on Android devices. We are committed to protecting your privacy and being transparent about our practices.

Information We Collect

Crystal Stack does not collect, store, transmit, or share any personal data or personally identifiable information (PII) from its users.

Specifically, we do not collect:

Names, email addresses, or contact information

Location data

Device identifiers or advertising IDs

Usage analytics or behavioral data

Photos, media, or files

Financial or payment information (all purchases are handled entirely by Google Play)

Any other personal information

In-App Purchases

Crystal Stack offers optional in-app purchases (virtual currency "Gems") through the Google Play Store. All payment transactions are processed entirely by Google Play. We do not have access to, collect, or store any payment details, billing information, or financial data. Please refer to Google Play's Privacy Policy for information on how Google handles payment data.

Data Storage

All game data, including your high scores, virtual currency balance, and unlocked skins, is stored locally on your device only. This data is not transmitted to any external server or third party.

Third-Party Services

Crystal Stack does not integrate any third-party analytics, advertising, tracking, or data collection services.

Children's Privacy

Crystal Stack does not collect personal information from anyone, including children under the age of 13. The Game is safe for users of all ages.

Changes to This Privacy Policy

We may update this Privacy Policy from time to time. Any changes will be reflected on this page with an updated "Last updated" date. We encourage you to review this Privacy Policy periodically.

If you have any questions or concerns about this Privacy Policy, please contact us at:

Email: [hungng.contact.271@gmail.com]