Privacy Policy

1. Who we are

This Privacy Policy explains how FightTech ("we", "us", or "our") handles information in connection with the Go Brain game (the "Game"), available as a mobile app (package / bundle id vn.fighttech.go2048) and as a web version. By using the Game, you agree to the practices described here.

2. Privacy at a glance

• We do not collect any personal data.
• There is no account and no sign-in.
• The app contains no advertising and no analytics or tracking SDKs.
• The website uses Google Analytics for anonymous, aggregated usage statistics only (see section 4).
• Your game progress and settings are stored only on your device.
• The app works fully offline.
• We do not sell your personal information, and we do not use analytics to build an advertising profile of you.

3. Information we process

The Game stores a small amount of information locally on your device so it can remember your progress between sessions. None of this is transmitted to us or to any third party.

Data	Purpose	Where it is stored
Current board & score	Resume your game where you left off	On device (local storage)
Best score	Show your high score	On device (local storage)
Theme preference	Remember light / dark / system choice	On device (local storage)
Language preference	Remember your selected language	On device (local storage)

We do not collect your name, email address, phone number, contacts, photos, location, or advertising identifiers. We do not build an advertising profile of you, and we do not track you across other apps or websites. The website analytics described in section 4 are first-party and limited to this site.

4. Third-party services

The mobile apps embed no advertising networks, analytics, crash-reporting, or social SDKs, and do not require a network connection to play.

The website (this landing page and its sub-pages) uses Google Analytics 4 to understand aggregate, anonymous usage — for example how many people visit and which pages are popular. Google Analytics sets cookies and may process technical data such as a shortened IP address, device and browser type, approximate region, and the pages you view. We use this only in aggregate; we do not use it to identify you personally or to build an advertising profile. This data is processed by Google as described in Google's Privacy Policy. You can opt out with the Google Analytics Opt-out Browser Add-on, by blocking analytics cookies in your browser, or by enabling "Do Not Track". The mobile apps do not use Google Analytics.

The web version is hosted on GitHub Pages. As with any website, the hosting provider may process standard technical request information (such as IP address and user-agent) in server logs for security and delivery, governed by GitHub's privacy statement. The mobile apps do not make this request and do not need the internet to function.

5. Device permissions

• Vibration / haptics — used only to provide a subtle tap when tiles merge. No data is involved.

The Game does not request access to the camera, microphone, location, contacts, photos, or storage, and it does not require any runtime permissions to play.

6. Data storage & retention

Because all data is stored locally, it remains on your device until you clear it. Starting a new game replaces your saved board. Uninstalling the app (or clearing your browser's site data for the web version) removes all data the Game created. We keep no server-side copies of anything.

7. Children's privacy

Go Brain is a simple number puzzle suitable for all ages. The app does not collect personal information from anyone, including children, and contains no advertising, no in-app purchases, and no behavioral tracking. The website analytics described above are aggregate and not directed at children.

8. Your rights and choices

• Access & deletion — your data lives entirely on your device. You can reset it by starting a new game, clearing the app's data in your device settings, uninstalling the app, or clearing your browser site data.
• Because we hold no personal data on any server, there is nothing for us to access, correct, export, or delete on our side.
• Depending on where you live (for example, the EEA/UK under GDPR, or California under the CCPA/CPRA), you may have additional rights regarding personal data. Since we collect none, these requests can be satisfied directly on your device.

9. Changes to this policy

We may update this Privacy Policy from time to time. When we make material changes, we will revise the "Last updated" date above and, where appropriate, note it in the store listing. Continued use of the Game after changes take effect constitutes acceptance of the revised policy.