Privacy Policy
appstdo (the “Developer”) respects your privacy and is committed to protecting it. This Privacy Policy explains how we handle information in connection with the Queenkan mobile app and the queenkan.com website (together, the “Service”).
This policy covers both ① the mobile app and ② the website.
1. Information We Collect
1-1. Mobile App
| Category | Items | How collected | Sent externally? |
|---|---|---|---|
| On-device game data | Level progress, total puzzles solved, settings (dark mode, hearts display, etc.), tutorial completion, remaining hints, daily-challenge records (streak, completion dates) | Stored automatically on your device as you play | Not sent to our servers. May be backed up to iCloud (iOS) or Google Auto Backup (Android) depending on your device settings |
| Game service identifier (optional) | Apple Game Center / Google Play Games player identifier and the resulting authentication credential | When you sign in for features such as leaderboards | Apple / Google and Google Firebase (authentication) |
| Advertising identifier | Advertising ID (iOS IDFA / Android Advertising ID), ad impression and interaction data | Collected by the ad SDK (Google AdMob) when ads are shown | Google AdMob |
| Usage statistics | Level-play events (solve time, hint/mistake counts, drop-off points), device and app-version info | Collected automatically by the analytics SDK (Google Firebase Analytics) as you play | Google Firebase |
- The app does not collect directly identifying personal information such as your name, email address, or phone number.
- Game service sign-in is optional; all core features (playing puzzles, saving progress) work without it.
- Usage statistics are collected to improve puzzle difficulty and are not combined with your name, email, or other direct identifiers. The app does not integrate any crash-reporting tools.
1-2. Website (queenkan.com)
| Items | How collected | Notes |
|---|---|---|
| Access logs (IP address, browser/device info, visit time) | Automatically recorded by our web infrastructure (Cloudflare) | For security and reliable service |
| Usage analytics (cookies, etc.) | (planned) Google Analytics (GA4) | This policy will be updated upon adoption |
| Advertising data (cookies, etc.) | Collected automatically by Google AdSense when ads are served | Users in the EEA/UK and other regions requiring consent are offered a cookie-consent flow |
The website game stores progress only in your browser (localStorage); no server account is required.
2. How We Use Information
- Saving and restoring game progress and settings
- Providing game-service features such as leaderboards and achievements (when signed in)
- Analyzing usage statistics to improve puzzle difficulty and the game experience
- Serving ads to cover the cost of operating the Service
- Preventing abuse, and ensuring security and reliable operation
- Linking purchases to a recoverable identity if in-game currency (coins) is introduced in the future (not currently offered)
Legal bases (EEA/UK). Where the GDPR or UK GDPR applies, we process information as necessary to provide the Service you request (performance of a contract), for our legitimate interests (security, abuse prevention, and measuring and funding the Service), and with your consent where required (e.g., personalized advertising). You may withdraw consent at any time without affecting the lawfulness of processing before withdrawal.
3. Retention
- On-device game data: Deleted when you uninstall the app or use “Reset progress” in the app. We set no separate retention period.
- Game service identifier / credentials: Retained per Apple / Google / Firebase policies. You may request disconnection or deletion via your platform account.
- Advertising identifier: Subject to ad SDK and ad network policies. You can reset your advertising ID or limit tracking in your device settings.
- Web access logs: Retained and then deleted per our infrastructure provider’s (Cloudflare) policy.
4. Third Parties and Processors
To operate the Service, we rely on the following third parties (processors). Their handling of data is governed by their respective privacy policies.
| Processor | Purpose | Policy |
|---|---|---|
| Google LLC (Firebase Authentication) | Authentication identity for game-service sign-in | https://firebase.google.com/support/privacy |
| Google LLC (Firebase Analytics) | App usage statistics for difficulty tuning | https://firebase.google.com/support/privacy |
| Google LLC (AdMob) | Mobile in-app ad serving and measurement | https://policies.google.com/privacy |
| Google LLC (Play Games Services) | Android leaderboards/achievements | https://policies.google.com/privacy |
| Apple Inc. (Game Center) | iOS leaderboards/achievements | https://www.apple.com/legal/privacy/ |
| Cloudflare, Inc. | Website hosting and security | https://www.cloudflare.com/privacypolicy/ |
| Google LLC (AdSense) | Website ad serving and measurement | https://policies.google.com/privacy |
| Google LLC (Analytics) — (planned) | Web analytics | https://policies.google.com/privacy |
We do not sell your personal information, and we do not share it with third parties except as described above.
International transfers. The providers above are located primarily in the United States. When you use the Service, the information described in Section 1 may be transferred to and processed in countries other than your own. Each provider maintains its own safeguards for such transfers (such as standard contractual clauses); see the policies linked above.
5. Your Rights and Choices
You may exercise the following at any time:
- Access, correct, delete: On-device data can be deleted directly via “Reset progress” in the app or by uninstalling the app.
- Disconnect game service: Via your Apple Game Center / Google Play Games account settings.
- Ad preferences: Limit personalized ads or reset your advertising ID in your device settings.
- Regional rights: Depending on where you live, you may have additional rights under laws such as the GDPR (EEA/UK) or the CCPA/CPRA (California), including the right to access, delete, or object to certain processing. Contact us using the details below to make a request.
We respond to requests within the time required by applicable law.
6. Advertising and Personalized Ads
The app shows ads (banner, interstitial, rewarded) via Google AdMob, and the website may show ads via Google AdSense. Advertising identifiers and cookies may be used to deliver personalized ads.
- iOS: You can decline tracking via App Tracking Transparency (ATT) and “Limit Ad Tracking.”
- Android: You can opt out of personalized ads and reset your Advertising ID in Settings > Ads.
- EEA/UK and other regions where prior consent is required: a consent flow (Google User Messaging Platform) is shown before ads are served, and personalized ads are used only with your consent.
7. Children’s Privacy
The Service is a general-audience logic puzzle game. It is not directed to children under 13 (or the minimum age required in your jurisdiction), and we do not knowingly collect personal information from children.
8. Security
We rely on the standard security measures of trusted platforms (Apple, Google, Cloudflare) for collection and transmission, and we minimize risk by not collecting directly identifying personal information.
9. Contact
- Privacy contact: Dongseog Lee (appstdo)
- Email:
hello@queenkan.com
Please direct any questions, complaints, or requests regarding your privacy to the contact above.
10. Changes to This Policy
We may update this Privacy Policy to reflect legal or service changes. We will announce changes through the website and the app.
- Effective date: July 5, 2026