Hex Mosaic – Privacy Policy

Last updated: October 25, 2026

Hex Mosaic: Copy & Color ("the App") is a single-player puzzle game developed and published by Truong Duy Tan ("I", "me", "my"). This Privacy Policy explains what information the App uses and how it is handled. By using the App, you agree to this policy.

Summary

• The App does not ask for your name, email address, contacts, photos, location or any other personal information.
• The App has no accounts, no advertising, no in-app purchases, no chat and no analytics of its own.
• The App has no links to social networks. Its only links are to this Privacy Policy and the Terms of Use, behind the "i" button on the picture gallery screen; they open in your web browser.
• Your progress is stored only on your device.
• When your device is online, the App downloads its list of pictures from Google Firebase Remote Config (see "Picture updates" below).

Information stored on your device

To make the game work, the App saves the following data on your device only:

• which pictures you have completed and how many stars you earned;
• the picture you are currently coloring, so you can continue later;
• how many times you pressed CHECK with a wrong cell on the current picture (used to give stars);
• your sound setting.

This data never leaves your device and is not sent to me. You can delete it at any time by uninstalling the App.

Information collected automatically

The App is built with the Unity game engine. Unity Technologies may automatically collect limited technical information when the App runs, such as device model, operating system version, graphics hardware and App version, to measure and improve the performance of the engine. This information does not identify you personally, and I do not receive or use it. It is handled under Unity's Privacy Policy: https://unity.com/legal/privacy-policy

Picture updates (Google Firebase)

So that new pictures can be added without updating the App, the App downloads its list of pictures from Firebase Remote Config, a service provided by Google LLC. To deliver the list, Firebase receives limited technical information: the App's identifier and version, the Firebase SDK version, your device's operating system version, language and country setting and time zone, and a random Firebase installation ID that is created for the App on your device. This information is not linked to your name or any other personal information, and it is not used for advertising or to track you. The App does not use Google Analytics. If your device is offline, the App uses the pictures built into it and nothing is sent. Google processes this information on my behalf, as a data processor under the Firebase Data Processing and Security Terms, and protects it to the same or a higher standard than described in this policy. Google handles this information under its Privacy Policy (https://policies.google.com/privacy) and the Firebase privacy information (https://firebase.google.com/support/privacy).

Data retention and deletion

• Game data stays on your device until you uninstall the App, which deletes it.
• Firebase keeps the random installation ID until it is deleted. When you uninstall the App, the ID is removed from your device and is no longer used; if you reinstall, a new random ID is created.
• You can ask me at any time to delete the Firebase data for the App by writing to the address in "Contact" below. Data that is deleted is removed from Google's systems within 180 days.
• To stop the App from sending any information to Firebase, use the App while your device is offline, or uninstall it.

Third-party services

Apart from the Unity engine and Firebase Remote Config described above, the App does not include any third-party services for advertising, analytics, social login or tracking. The App does not track you across apps or websites owned by other companies.

Children's privacy

The App is suitable for all ages, including young children. The App does not collect personal information from anyone, including children under the age of 13 (or the equivalent minimum age in your country).

Data security

Because your game data is stored only on your device, it is protected by the security features of your device and operating system. I do not operate any servers that store your data.

Your rights

I do not hold your name, email address or any other information that identifies you. To remove the data used by the App, see "Data retention and deletion" above. If you have any questions about your privacy, please contact me.

Changes to this policy

If the App changes in a way that affects your privacy (for example, by adding advertising or analytics), I will update this Privacy Policy and the "Last updated" date above before those changes take effect.

Contact

If you have any questions about this Privacy Policy, please contact me at: truongduytanepu@gmail.com

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