Better Sudoku Pro · iOS

Better Sudoku Pro Privacy Policy

Version and effective date: 2026-10-01. This notice covers Better Sudoku Pro for iOS (net.better.mac.sudoku, iOS 18 or later). The operator is Beijing Habitai Technology Co., Ltd (registration number 91110108MAKBJBRM9N, registered address: Room CG05-172, Building 8, Courtyard No.1, Zhongguancun East Road, Haidian District, Beijing, China), and the privacy contact is support@bettermac.net. This page applies together with Appendix E9 of the general BetterMac Privacy Policy and describes the processing this App actually performs. The Japanese version adds the items required by Japan's Act on the Protection of Personal Information.

1. Guest play

You can play as a guest without an account, including offline. The account, sync, community, leaderboard, and purchase-linking processing described below happens only after you sign in.

2. Account and sign-in

Accounts are optional and available only to people aged 16 or older.

Sign in with Apple: we request no name or email scope and store the Apple-issued user identifier. The App also sends Apple's identity token and authorization code to our server for verification; the authorization code is exchanged for an encrypted Apple refresh token used only to revoke the Apple authorization when an account is deleted or an identity is unlinked.
Google sign-in: when the server configuration enables native sign-in, it uses the official GoogleSignIn-iOS SDK. The App sends Google's signed ID token to our server for verification, and we store only the identifier Google assigns to the account (the subject). If the current configuration offers only the browser fallback, sign-in uses browser-based OAuth. In either path, we do not use Google's name, email, or avatar as the account identity; your interaction with Google is governed by Google's own privacy policy.
Facebook sign-in: completed through browser-based OAuth; we store only the identifier Meta/Facebook assigns to the account. Your interaction with Meta is governed by its own privacy policy.
Email one-time code: we store your email address in encrypted form to sign you in; one-time codes expire after 10 minutes and the expired challenge is removed after the scheduled expiry cleanup window.
App transaction: while you are signed in, the App also sends the Apple-signed transaction for the installation to our server. We retain its app transaction identifier only to respond to Apple's notice that a parent or guardian withdrew consent for a minor's use of the App, by signing out and restricting the affected account.
Sessions and devices: so you can review and manage signed-in devices, we record each session's device model and OS version.
Age assurance: where age-assurance laws apply (for example Texas) and your device runs iOS 26.2 or later, the App asks the App Store for your age range before an account is created, using Apple's Declared Age Range feature. The App uses only whether you meet the minimum age; the age range is not sent to or stored on our servers. You can decline to share, in which case you can keep playing as a guest.

3. Profile and community

The community (posts, comments, the creator center) and the leaderboard are not available in version 1.0 of the App; the community and leaderboard processing in Sections 3 and 4 will apply once they are offered. Your profile, and the sync and game data in Section 4, apply now.

Your profile consists of your display name, bio, avatar, and optional region; the region is shown only if you choose to display it. The community processes the posts you publish (puzzles, tutorials, and discussions with text and up to 9 images), comments, likes, favorites, and follows.

All posts, comments, images, and profile edits are reviewed by our staff first and become public only once approved; they are then visible to other users of the App. To enforce the Community Guidelines, we process reports, blocks, appeals, and moderation decisions, including the accounts, content, reasons, and outcomes concerned.

4. Leaderboard, sync, and game data

The weekly XP leaderboard is opt-in; if you join, your display name, avatar, and level are shown to other users on that board. When you are signed in, game saves, verified game events, academy progress, preferences, XP, achievements, and check-ins are synchronized between your devices through our servers.

5. Subscriptions and purchases

Pro is an auto-renewable App Store subscription with monthly and yearly tiers; the monthly tier includes a one-week free trial where offered. Apple handles payment, renewal, cancellation, and refunds, and we never receive your payment-card details or Apple Account password. When you purchase or restore while signed in, the App sends the Apple-signed transaction information to our server, which verifies it and links Pro to your account. Apple also sends us renewal, expiry, refund, and revocation events through App Store Server Notifications.

While you are signed in, the App also sends the Apple-signed app transaction for your installation, and we store its app transaction identifier with your account. We use it only to act on Apple's notice that a parent or guardian has withdrawn consent for a minor's use of the App, in which case we sign that account out and restrict it.

6. What we do not do

The App contains no advertising or cross-app tracking SDK and no automatic crash-reporting service. GoogleSignIn-iOS is included for Google authentication; Google and its SDK may process authentication-related account, device, and usage information under Google's notices. We do not sell personal information, use it for targeted or cross-context behavioral advertising, or use it for differential pricing.

7. Service providers, storage location, and cross-border processing

Account, community, and sync data are hosted by Alibaba Cloud (Singapore) Private Limited (the Alibaba Cloud International contracting entity) as our processor, stored in Japan, and administered remotely by us from Mainland China. For users outside Mainland China this means your information is transferred to Japan for storage and accessed from Mainland China. We apply encryption in transit, least-privilege access, audit logging, and contractual controls on our provider. Section 10 and Appendix B of the general policy describe providers and transfer arrangements.

API access logs for this App's server record only the time, method, path, status, and timing, exclude your IP address, and are kept for 30 days. The server uses your IP address transiently for rate limiting and stores only a keyed hash of it in short-lived counters.

8. Retention and deletion

You can delete your account in the App under Me → Settings → Privacy and account deletion. You can delete your account while a subscription is active, but cancelling the subscription is a separate step in your Apple Account settings. We process deletion promptly: online account data, including your profile, community content, and synced data, is removed within 30 days, and backup copies rotate out within 35 days. Purchase, transaction, and tax records are retained as set out in Appendix C of the general policy and as required by law.

9. Your rights

Depending on applicable law, you can request access to, a copy of, correction, completion, deletion, or portability of your personal information, withdraw consent, or object to processing; see Sections 13 and 14 and Appendix D (Mainland China, EEA and UK, applicable U.S. states) of the general policy. Send requests to support@bettermac.net, mentioning “Better Sudoku Pro” and your sign-in method so we can verify the account.

Japan: Japan's Act on the Protection of Personal Information applies. You can request disclosure of retained personal data (including records of provision to third parties), correction, addition, or deletion, suspension of use or erasure, and suspension of provision to third parties. Operator details, security control measures, and the foreign environment (Mainland China and its personal-information regime) are set out in the Japanese version.

Canada: PIPEDA applies and, in Quebec, the Act respecting the protection of personal information in the private sector. Your information is stored in Japan and accessed from Mainland China, where it may be subject to local law, including lawful access by authorities. You can request access and correction or withdraw consent (which may prevent us from continuing to provide account features), and you can complain to the Office of the Privacy Commissioner of Canada or, in Quebec, the Commission d'accès à l'information. Our person in charge of the protection of personal information (Quebec) can be reached at support@bettermac.net.

Australia: the Privacy Act 1988 and the Australian Privacy Principles apply. Your information is disclosed to our processor in Japan and accessed by us from Mainland China, as described in Section 7. You can request access to or correction of your personal information, and complain to us first and then to the Office of the Australian Information Commissioner (OAIC).

New Zealand: the Privacy Act 2020 applies. Your information is stored in Japan and accessed from Mainland China, as described in Section 7. You can request access to or correction of your personal information and complain to the Office of the Privacy Commissioner.

Singapore: the Personal Data Protection Act 2012 applies. Our Data Protection Officer can be reached at support@bettermac.net. Transfers to Japan and access from Mainland China are protected as described in Section 7. You can request access to or correction of your personal data, withdraw consent, and complain to the Personal Data Protection Commission.

Hong Kong: the Personal Data (Privacy) Ordinance applies. You can make a data access request or a data correction request to support@bettermac.net and complain to the Office of the Privacy Commissioner for Personal Data.

10. Children

The App is not directed to children, and accounts are available only to people aged 16 or older. If you believe someone under 16 has created an account, contact us and we will delete it after verification.

11. Website, email, and changes

When you open our legal or support pages in a browser, website processing and optional analytics cookies follow the general privacy policy and Cookie Policy. If you email support@bettermac.net, we receive the address, message, and any material you choose to send to handle your request; do not send passwords or sign-in codes. If processing changes materially, we will update this page and, where required, give separate notice or ask for consent.