Project and contact
IRBIS Games operates the IRBIS Sudoku service for an international audience. Support and privacy contact: support@irbissudoku.com.
Local app and website data
Game progress, the current puzzle, notes, history, settings, language and part of the IRBIS+ entitlement state may be stored locally on your device. Data is not automatically synced between devices and may be lost after clearing storage, reinstalling or operating-system action.
No account or email field
The current mobile app does not create an online account and has no field for entering an email address. Your email address, message and information you voluntarily provide are handled only if you contact support at support@irbissudoku.com. Installing the app, accepting the terms or allowing functional notifications does not opt you into marketing.
Optional analytics, cookies and technical records
Mobile-app analytics is off by default and begins only after your explicit choice in the app’s privacy settings. With consent, limited feature interaction, gameplay summaries, purchase or subscription activity, and technical app and device information—including language, time zone and approximate region—may be handled. Analytics does not include puzzle contents, your notes, full payment-card details or support-message text. On the website, optional measurement operates only after consent in cookie settings. We do not use this data for personalised advertising or tracking across apps or websites. Limited technical records about requests, errors and security may be handled to operate and protect the service.
Functional and marketing notifications
Notifications are optional and depend on device permission. To deliver the functional notifications you choose, we may handle an app-installation or notification-delivery identifier, app and device configuration, language, time zone, notification choices, limited activity and access state, and delivery or open information used to check reliability. This data is not used for personalised advertising or cross-app tracking. Marketing and news notifications are off by default and require a separate explicit choice.
IRBIS+ purchases
On iOS, the App Store processes IRBIS+ purchases and subscriptions; on Android, Google Play does so. IRBIS Games does not receive your payment-card number. The app receives only information needed to display access and restore a purchase.
Support communications
When you email support@irbissudoku.com, the sender address, message and information you voluntarily provide are handled. Do not send passwords, complete payment details, verification codes or other secrets.
Purposes, bases, recipients and international processing
Data is handled to provide the game, remember your choices, deliver requested notifications, confirm purchases, answer support, protect the service and—only with consent—measure use of the app and website. Depending on applicable law, the basis may be performance of the requested service, consent, legitimate interests in security and support, or a legal obligation. Only necessary data may be received by providers of hosting and technical operations, notification delivery, consent-based measurement and security, and by app stores and payment processors. They must protect this data, use it only for the services entrusted to them and not use it for their own advertising or cross-app tracking. Data may be processed in other countries using safeguards required by applicable law.
Retention, consent withdrawal and security
Local data remains until you, the app, browser or operating system removes it. Withdrawing analytics consent stops future optional measurement and clears events still pending on the device, but does not automatically erase records received earlier; those records are retained only as reasonably necessary for the purpose, security and applicable obligations. When notifications are disabled, the app stops the requested notifications and asks for the active delivery registration to be removed. Support messages and limited technical records are kept only as reasonably needed. Reasonable organisational and technical measures are used, but absolute security cannot be guaranteed.
Your choices, rights and deletion
You can decline analytics, disable reminders, clear website data and manage local data using device settings. IRBIS Sudoku does not create a separate user account, so there is no separate account-deletion procedure. For support data or rights available under applicable law, contact support@irbissudoku.com; proportionate verification may be required.
Age audience and changes
The service is not designed specifically to collect children’s personal data. Age and parental-consent requirements vary by country; contact support if you believe a child provided personal data. Material Policy changes will be posted here with a new date.
Effective and last updated: 2026-09-17.