Blind Draw: Mahjong Touch Privacy Policy
QuickServe Inc. ("we", "us") sets out below how user information is handled in Blind Draw: Mahjong Touch (the "App"), our smartphone game (this "Policy").
1. Company information (data controller)
- Name: QuickServe Inc.
- Address: Sakurai Bldg. 2F, 2-8-19 Fukagawa, Koto-ku, Tokyo 135-0033, Japan
- Contact: info@91932.com / Tel. +81-3-6450-5141 (weekdays 10:00–19:00 JST)
- Personal data protection manager: Manager, Systems Development Department
Where the GDPR or similar laws apply, QuickServe Inc. is the data controller for the App.
2. Scope and authoritative version
This Policy applies only to the App. Our other apps are covered by our common app privacy policy. This document is independent of the privacy policy on our corporate website. The Japanese version of this Policy is authoritative; if there is any discrepancy with a translation, the Japanese version prevails.
For support, see the support page.
3. Information the App stores on your device
The App can be used without creating an account, and we do not directly collect your name or similar information. The data below is stored only on your device and is never sent to our servers (except for OS backups).
| Data | Purpose |
|---|---|
| Your best time | Displaying your record |
| Tile Album (which tiles you have identified and your fastest time for each) | Showing your records and deciding which achievements are unlocked |
| Settings (music and sound-effect volume, whether you have completed the first-time vibration check) | Keeping your settings |
| Records used to decide when to ask you to review the App on the store (running totals of launches and clears) | Avoiding asking too often |
| Data for showing promotions for our other apps (retrieved promotion information and icons) | Showing promotions |
The App uses vibration (haptics), which runs under a normal permission and does not collect any information about you. Uninstalling the App removes this data from your device. However, copies stored by OS backup features (such as iCloud Backup or Google Backup) may persist in accordance with the settings and retention periods of the OS provider and may be restored when you reinstall.
4. Online leaderboards and achievements
The App has online leaderboards for competing on clear time, and achievements for collecting tiles in the Tile Album. On iOS it uses Apple Game Center; on Android it uses Google Play Games services.
- Only while you are signed in to the respective service, your clear time (best time) is sent to Apple's or Google's service. At launch, the best time stored on your device may be sent again so that clears made while offline still reach the leaderboard.
- Likewise, only while you are signed in, the achievements you unlock by collecting tiles in the Tile Album (which achievements are unlocked) are sent to Apple's or Google's service. At launch, achievements already unlocked in the Tile Album on your device may be sent again. Per-tile times themselves are never sent. Sign-in takes place on each company's own screens; the App never handles your ID or password.
- On the leaderboard screen, each company's service shows other users your player name and icon, your time and your rank. The App does not read or store your player name or icon.
- The information sent is handled by Apple or Google under their respective privacy policies. We do not separately store your player name or player ID.
- You can play the game without signing in (you just cannot take part in the leaderboards).
5. Information collected by third-party SDKs
The App uses the following third-party SDKs for advertising, usage analytics and quality improvement. These SDKs automatically collect the information below and send it to servers operated by Google LLC and its affiliates ("Google").
| SDK | Main information collected | Purpose |
|---|---|---|
| Google AdMob (ad delivery: banner, full-screen and rewarded ads) | Advertising ID (IDFA on iOS / Advertising ID on Android — collected only where permitted by OS settings, applicable law and your consent), ad impression and interaction events, IP address (including inference of approximate location), device information (model, OS version, etc.) | Delivering ads, measuring their performance, preventing fraud |
| Firebase Analytics (usage analytics) | Identifiers such as the app instance ID, screen views, game-progress events such as game start, clear (time, whether you continued after watching an ad), game over (question number, number of correct answers, the type of tile you could not answer), continuing after watching an ad (question number) and screen views (title, vibration check, game), plus events for when a promotion for one of our other apps is shown or tapped, device and OS information, approximate region based on IP address | Improving the App through usage analysis * In regions where consent is required, not collected unless you consent (Section 8) |
| Firebase Crashlytics (crash reporting) | Crash logs, diagnostic and performance information, installation UUID, device and OS information | Diagnosing defects, improving quality |
These events are used to tune the difficulty of the game and to see how often players continue after watching an ad. The App has no text-entry features, and nothing you type, nor any leaderboard player name or ID, is ever sent as an event.
If you contact us, we collect your contact details (such as name and email address), the content of your enquiry and, where necessary, device and OS information, for the purpose of responding. We delete this information after a reasonable period once your enquiry has been resolved.
6. Disclosure to third parties and external transmission
We do not provide collected information to third parties, except as required by law and for transmission to the external service providers (such as Google and Apple) described in this Policy.
Information sent through the SDKs in Section 5 is handled by Google under its own privacy policy. Depending on the processing, Google may act as an independent controller. Personalized advertising and cross-app tracking are carried out in accordance with applicable law and your consent status (iOS ATT, consent forms).
- Google Privacy Policy
- How Google uses information from sites or apps that use its services
- Privacy and Security in Firebase
In place of a Google AdMob ad, the banner slot in the App may show a promotion for one of our other apps. Such a promotion displays information we have prepared (app name, description, icon and a link to the store). To measure effectiveness, when a promotion is shown or tapped it is recorded as a Firebase Analytics event described in Section 5 (including the ID of the promoted app); in regions where consent is required, only if you have consented.
To show these promotions, the App periodically retrieves the promotion information (app name, description and icon) from our website (qkserve.github.io, hosted on GitHub Pages operated by GitHub, Inc.). As with viewing any web page, connection information such as your IP address reaches GitHub's servers during this retrieval; we do not collect or store it, and the data described in Section 3 is never transmitted.
7. International data transfers
The destinations in Sections 4 and 5 include servers of Apple and Google located in the United States and other countries outside Japan. Google applies appropriate safeguards, including compliance with the EU Standard Contractual Clauses. Details of the destinations and safeguards are available in "Privacy and Security in Firebase" above and in each company's privacy policy.
8. Managing consent and opting out
- iOS (ATT): You choose whether to allow tracking in the ATT dialog, and you can change it at any time under Settings > Privacy & Security > Tracking.
- EEA, UK and other regions requiring consent: A consent form required by law is displayed. You can change or withdraw your consent at any time via "Ad Privacy Settings" on the Settings screen of the App (shown only in applicable regions). Withdrawing consent does not affect the lawfulness of processing carried out before the withdrawal.
- Usage analytics: In regions where consent is required, Firebase Analytics does not collect usage data unless you consent.
- Online leaderboards: If you sign out of Game Center / Google Play Games services, no further times or achievements are sent.
- Additional OS settings: On Android you can reset or delete your advertising ID in the OS settings (this is not the same as withdrawing consent).
9. Additional information for users in the EEA and the UK (GDPR / UK GDPR)
The legal bases for processing are as follows.
| Processing | Legal basis |
|---|---|
| Storing and reading identifiers on your device (advertising ID, etc.) | Consent |
| Delivering personalized ads | Consent |
| Delivering ads without consent (limited ads) and preventing fraud | Legitimate interests (sustaining the free App, security) |
| Usage analysis (Firebase Analytics) | Consent |
| Crash reporting (Crashlytics) | Legitimate interests (maintaining quality on a data-minimizing basis) |
| Sending times to the leaderboards and unlocked achievements (Game Center / Google Play Games services) | Performance of a contract (providing the leaderboard feature you requested) |
| Complying with legal obligations | Legal obligation |
- Retention: Data on your device is retained until you delete it (uninstall the App). For data collected by Google, see Privacy and Security in Firebase and the Google advertising policies. Leaderboard data is retained under the policies of Apple and Google. Retention of enquiry information is described in Section 5.
- Your rights: You have the rights of access, rectification, erasure, restriction of processing, objection and data portability. Requests are accepted at the contact point in Section 12. Firebase data is linked only to a per-installation ID and we cannot identify you from it, so we may be unable to locate data relating to you individually. Even then, you can stop further collection by withdrawing your consent via "Ad Privacy Settings" on the Settings screen of the App (in applicable regions).
- Complaints: You have the right to lodge a complaint with the supervisory authority in your country.
- Voluntary provision: Providing information is neither a contractual nor a statutory requirement, and the App remains usable if you do not (the ads shown may be affected).
- Automated decision-making: We do not carry out automated decision-making, including profiling, that produces legal effects.
10. Users in other regions
Depending on the laws of your region, you may have rights such as access, deletion and opt-out. Requests to exercise these rights are accepted at the contact point in Section 12.
11. Children
The App is not designed for children.
12. Requests for disclosure and contact point
Requests for disclosure, correction or suspension of use of retained personal data, and enquiries about this Policy, are accepted at the contact point below. We may ask for documentation to verify your identity. There is no fee.
QuickServe Inc. — Personal Data Enquiries
Email: info@91932.com
Tel: +81-3-6450-5141 (weekdays 10:00–19:00 JST)
Address: Sakurai Bldg. 2F, 2-8-19 Fukagawa, Koto-ku, Tokyo 135-0033, Japan
13. Changes to this Policy
We may revise this Policy in response to changes in law or in the App's functionality. For material changes (such as adding a new SDK, purpose or recipient, or changing how consent is handled), we will post a notice on this page and, where necessary, notify you in the App or obtain your consent again. A revised Policy takes effect when it is posted on this page.
14. Revision history
- October 21, 2026: Established. Added the Tile Album and achievements (Sections 3 and 4).