Clear terms for offline puzzle play, with your mandatory consumer rights preserved.
1. Scope and acceptance
These Terms of Use cover Sudoku (数独), the iPhone and iPad app with bundle identifier com.setsunal.sudoku. “You” means the person using the app; “we” and “publisher” mean the developer identified as the seller on its App Store listing. Contact: yfeiib@gmail.com.
By using Sudoku, you agree to these terms to the extent a binding agreement can be formed under applicable law. If you do not agree, stop using the app. You must have legal capacity to accept the terms or any permission required from a parent or guardian.
2. License and App Store rules
You may use a lawfully obtained copy on compatible Apple devices you own or control, subject to applicable App Store usage rules. Sudoku’s code, artwork, interface, and branding remain the property of their respective rights holders.
For App Store copies, Apple’s Standard End User License Agreement governs the software license unless a separate custom EULA is supplied through the App Store. These terms supplement that license and do not replace it. If a provision conflicts with the applicable EULA or mandatory law, the EULA or mandatory law controls to the extent of the conflict.
Do not unlawfully copy, redistribute, resell, or modify the app, bypass lawful technical restrictions, or infringe another person’s rights. These restrictions do not limit activities permitted by applicable law or licenses for any third-party components.
3. Gameplay and availability
Sudoku provides puzzle play, daily challenges, hints, notes, saved games, checkpoints, statistics, puzzle import, optional reminders, and sharing features according to the installed version. The current app requires iOS or iPadOS 17 or later.
Puzzle validation, hints, difficulty labels, timers, streaks, and statistics are provided for recreation. We do not guarantee that every puzzle classification, hint, result, or notification is error-free. Device settings, system interruptions, date changes, and app updates may affect these features.
The app is intended for entertainment and practice. It does not promise any particular educational, cognitive, health, or competitive outcome.
4. Imported puzzles and shared results
You are responsible for having permission to import or share a puzzle or other material. Importing content does not transfer ownership of it to us. The app processes imported puzzles locally and does not publish them on a service operated by us.
When you share a puzzle or result, you choose the recipient or service through the system share sheet. Check the content before sending. The selected service’s own rules apply to delivery, storage, and further sharing.
5. Saved games and backups
Games, preferences, completion records, and statistics are stored locally. Sudoku does not provide an account-based recovery service or its own cloud synchronization.
Deleting the app or its data, a device failure, or a failed restore may cause loss of progress. Keep any device backups you need and manage them through your chosen provider. Saved-game deletion, restarting a puzzle, and restoring a checkpoint can replace or remove local progress. We cannot recover records we do not hold.
The Privacy Policy explains local storage, reminders, sharing, support correspondence, and deletion in more detail.
6. Prices, payments, and refunds
Any price for downloading Sudoku is displayed by the App Store before purchase and may vary by region, tax, and currency. The current app does not contain in-app purchases or auto-renewing subscriptions. These terms do not authorize a recurring payment.
Apple processes App Store payments and handles refund requests under its applicable procedures. See Apple’s refund request guidance. Nothing in these terms limits any refund, warranty, or remedy required by consumer law.
A purchase does not promise every possible future feature, perpetual compatibility, or an unlimited period of updates and support.
7. Updates and third-party services
Updates may add, change, or remove features and change supported operating-system versions, subject to applicable law and any commitments made at purchase. We do not promise a fixed release schedule. Material changes to these terms will be identified by an updated date and communicated where legally required; changes do not retroactively remove accrued rights.
Apple services, email providers, sharing destinations, backup providers, and external websites operate under their own terms. Their availability and behavior may affect the features you choose to use.
8. Warranties and liability
To the extent permitted by applicable law, Sudoku is provided “as is” and “as available,” without a guarantee of uninterrupted operation, error-free results, or preservation of every saved record.
To the extent permitted by applicable law, we are not liable for indirect or consequential losses arising from use of the app. This does not exclude liability for fraud, intentional misconduct, gross negligence where exclusion is prohibited, death or personal injury caused by negligence where exclusion is prohibited, or any other liability that cannot lawfully be excluded.
Your mandatory consumer rights, including applicable quality guarantees, remedies, and refund rights, remain in force. Any limitation applies only to the extent permitted where you live and consistently with the applicable App Store EULA.
9. Ending use and disputes
You may stop using and delete Sudoku at any time. Any termination of the software license is governed by the applicable EULA and law. Stopping use does not automatically delete previously sent support messages, shared copies, or backups.
Applicable law and the governing-law provisions of your software license determine the law and forum for a dispute, subject to mandatory protections in your country of residence. These supplemental terms add no compulsory arbitration or class-action waiver.
If any provision is unenforceable, the remaining provisions continue to apply to the extent permitted by law.
10. Contact
For support, questions about these terms, or privacy requests, email yfeiib@gmail.com. Support correspondence is handled as described in the Privacy Policy.