Lumen Grid Privacy Policy

Privacy Policy for Lumen Grid

Effective date: August 15, 2026
Developer: Brainer
Privacy contact: auction@mekorean.com

Brainer provides Lumen Grid as an ad-supported logic puzzle application. This policy explains what information is handled when you use the app.

Information stored by the app

Lumen Grid stores puzzle progress, current and completed stages, board marks, elapsed and best times, daily-goal progress, hint use, settings, ad-frequency timestamps, and a one-time review-request flag in app-private storage on your device. Brainer does not operate an account system or custom server for Lumen Grid and does not upload this game progress to Brainer.

Advertising and consent services

The app uses Google Mobile Ads to display banner, interstitial, and user-initiated rewarded advertisements. Google Mobile Ads may automatically collect and share an IP address, user product interactions, diagnostic information, and device or account identifiers, including the Android advertising ID when available. Google states that these data may be used for advertising, analytics, and fraud prevention and are encrypted in transit.

The app uses Google User Messaging Platform to request and manage privacy choices where required. Consent status and interactions with privacy messages may be processed by Google. Available choices depend on your region, device settings, and Google's services. When a privacy-options entry point is required, it can be reopened from the in-app settings.

Google Privacy Policy
Google advertising information

Google Play review

After the tenth unique stage completion, the app may request Google Play's native rating and review card once. Any rating or optional review text you choose to submit is entered into and processed by Google Play. Lumen Grid does not read or store the submitted rating or review text, and no reward is offered for a review.

Retention and deletion

Local game data remains on your device until you clear the app's data in Android settings or uninstall the app. Brainer has no remote Lumen Grid account or game-progress database to delete. Information handled by Google is retained and deleted according to Google's policies and your Google or Android privacy controls, where applicable.

Security

Lumen Grid uses Android app-private storage for local progress and HTTPS-based third-party services. No method of electronic transmission or storage is completely secure, but the app limits its own data handling to what is described above.

Children

Lumen Grid is intended for users aged 13 and older and is not designed for children under 13. If you believe a child has provided information through a third-party service, contact auction@mekorean.com and the relevant service provider.

Changes

This policy may be updated when the app, SDKs, or legal requirements change. The effective date above will be revised when material changes are published.

Contact

Questions about this policy can be sent to auction@mekorean.com. Public support information is available at https://mekorean.com.

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