Privacy Policy

1Information handled directly by the app

The app has no account system and does not request your name, phone number, email address, contacts, photos, camera, microphone, precise location, or payment details. Level progress, scores, move counts, card and skill progress, board-tool state, audio settings, and your privacy choice are stored locally on your device. Uninstalling the app normally removes this local data.

Only after consent, the app sends a randomly generated installation ID, app version, launches and active play time; stage entries, deaths, and completions; highest stage, best score and highest tile; and successful revive, undo, hammer, and Nova uses to our first-party analytics service. These events calculate DAU, WAU, MAU, new users, D1/D7/D30 retention, average play time and launches, stage pass rates, progress, and feature use.

First-party analytics does not read IDFA, hardware device identifiers, your name, phone number, location, board contents, or ad interactions, and is not combined with advertising data. The installation ID resets on uninstall and is converted on our server into an irreversible pseudonymous digest.

After consent, the same gameplay and progress events are also sent to Firebase Analytics so we can measure acquisition, retention, feature use, and advertising performance for this global edition. Firebase creates a Google-generated app-instance identifier and may process IDFV and standard app, device, network, and diagnostic information. We do not send names, phone numbers, email addresses, precise location, board contents, or account information because the app has no account system.

2Analytics, advertising, and your choice

The app integrates Firebase Analytics, the Google Mobile Ads SDK (AdMob), and Google User Messaging Platform (UMP). These services are not initialized for collection until you accept the app's English privacy notice. If you decline, the core game remains playable without analytics or ads. Ad-funded revive, hammer, undo, and card-refresh features are unavailable, and no between-stage ad is requested.

After consent, a rewarded ad may appear only when you request a reward, and an interstitial may appear after every five completed stages. In applicable regions, UMP presents locally required privacy choices and Google selects an eligible personalized, non-personalized, limited, or technical ad-serving mode based on those choices.

3Google SDK disclosure

4Sharing and international processing

We do not sell personal information or share the separate first-party analytics pipeline with advertising partners. After consent, Firebase Analytics and AdMob are linked within our Google project so Google may process the Analytics and advertising data described above for acquisition, engagement, revenue measurement, fraud prevention, and service operation. Applicable advertising technology partners may also process ad-serving data. Storage locations, service providers, and international transfer arrangements are governed by Google's current policies and applicable law.

First-party analytics is hosted on Tencent Cloud infrastructure in mainland China and is used only for this game's own operations. Network providers may process standard network information for transport, security, and troubleshooting.

5Retention and deletion

Local game data remains until you reset progress, clear app data, or uninstall the app. Event-deduplication records are kept for no more than 120 days. Activity and progress records containing a pseudonymous installation digest are normally deleted within 24 months after the last activity. Aggregates that no longer contain that digest may be retained for trend analysis. Google manages Firebase Analytics and advertising SDK data under our service settings, its current policies, and legal obligations.

6Your choices and withdrawal

• Decline the first-run notice and continue the core game without analytics or ads.
• Open this policy again from “PRIVACY” on the pause screen.
• When required by UMP, use “AD PRIVACY OPTIONS” to review Google's advertising choices.
• Withdrawal clears queued first-party analytics and stops new Firebase Analytics collection and ad requests. Restart the app to ensure native Google services are inactive for the current process.
• Uninstall the app to remove local game data. Use Google's official privacy channels for requests concerning Google SDK data.

7Children and teenagers

The app is not specifically directed to children under 14 and does not knowingly ask children to submit identifying information. A guardian who believes a child enabled analytics or advertising without appropriate consent should withdraw consent, uninstall the app, and contact us or Google through the channels described here.

8Security and policy-site logs

We use reasonable measures to minimize and protect app information. This website's hosting and network providers may process standard access logs such as IP address, browser type, request time, and response status for delivery, security, and troubleshooting. The first-party analytics database does not store source IP addresses, and we do not use these logs to build player profiles or serve ads.

9Updates and contact

If app features, SDKs, or information practices materially change, we will update this page and request renewed consent when required. For app support, privacy questions, or requests concerning information you have provided to us, email zhangsonglinle@gmail.com. Please include the app name, app version, and a description of your request. Do not send passwords, identity documents, or bank details. For Firebase Analytics, AdMob, or UMP data questions, use the contact and data-rights channels in Google's official policies linked above.

If you email us, we receive your email address and any information you choose to include, and use it to handle your enquiry. Please share only what is necessary. This is separate from the app's automatic data handling described above.