Terms of Service
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Please read these Terms of Service (“Terms”) before downloading, installing or using Cube Sudoku 3D (“the Application”), operated and published by Štefan Toth (“we”, “us” or “our”).
1. Acceptance of terms
By downloading or using Cube Sudoku 3D from Google Play, Apple App Store or Microsoft Store, or by running the web application, you agree to these Terms. If you disagree with any part, you may not access or use the Application.
2. Intellectual property
Cube Sudoku 3D, including its 3D cube topology, algorithms, source code, visual designs, icons, graphics and trademarks, is the exclusive intellectual property of Štefan Toth and is protected by international copyright and intellectual property laws.
3. License and acceptable use
We grant you a personal, non-exclusive, non-transferable, revocable license to use the Application on compatible devices for personal, non-commercial entertainment and brain training.
You agree not to reverse engineer, decompile or disassemble the Application’s binary code; distribute, rent, lease or sublicense the Application without prior written consent; or use it in violation of applicable law or third-party rights.
4. In-app purchases (Cube Sudoku 3D Pro)
All puzzle sizes, difficulties and undo are free. Pro is a one-time, non-consumable purchase for unlimited hints, digit reveals and continuations without rewarded ads, and the Emerald Zen and Amethyst Violet themes. It is not a subscription. The current price, taxes and payment confirmation are shown by the store. A purchase can be restored with the same account in that store and does not transfer between different stores. Store purchase and refund rules, and mandatory consumer rights, apply. Optional Android rewarded ads are offered only to adults; unavailable or incomplete ads do not grant a reward. Free puzzles remain playable.
5. PDF books and Web Pro bought on cubesudoku.com
PDF editions of the Cube Sudoku 3D books and Web Pro for the browser edition are sold on cubesudoku.com through Stripe Managed Payments. The reseller and merchant of record for the purchase is Link, Stripe’s checkout service: it processes the payment, calculates and remits VAT or sales tax, issues the receipt and handles payment questions under its own terms. The price shown at checkout includes applicable taxes.
After payment the PDF is available immediately on the confirmation page, and a personal download link is sent to the e-mail address used at checkout. Every book is included in all languages of this website (currently 14): you choose the language of each download. The bundle contains all five books. A link is valid for 30 days and 10 downloads per book; for three years after the purchase you can request new links with the same address. Please keep your own copy of the files.
Web Pro is a one-time purchase, not a subscription. After payment you receive a license key on the confirmation page and by e-mail. Activate it in the game at play.cubesudoku.com with the purchase e-mail in up to 5 browsers at a time; deactivating a browser frees its place. The game checks the license online and keeps Web Pro for up to 7 days without a connection. Web Pro applies only to the browser edition; purchases do not transfer between the web edition and the app stores. A refund disables the license.
Before paying you request immediate delivery and acknowledge that you lose your right of withdrawal once the download starts or the license key is delivered. Your statutory rights for a defective product or one that does not match its description are not affected: write to [email protected] and we will fix the problem or arrange a refund.
The PDF is licensed for your personal, non-commercial use; you may print it for yourself and your household. Sharing, reselling or publishing the file or its puzzles, or sharing the license key, is not permitted.
The complete collection includes lifetime Web Pro for play.cubesudoku.com. The licence key is shown after payment and sent to your purchase e-mail. Pro for mobile and store apps is purchased separately.
6. Disclaimer of warranties
The Application is provided “AS IS” and “AS AVAILABLE”, without express or implied warranties of any kind. We do not guarantee that it will always be uninterrupted, timely, secure or error-free.
7. Limitation of liability
To the maximum extent permitted by applicable law, the developer shall not be liable for any indirect, incidental, special, consequential or punitive damages arising from your access to or use of the Application.
8. Changes
We may modify these Terms at any time. Changes will be posted on the terms page with a revised date.
9. Contact
Operator: Štefan Toth ([email protected]). Privacy: [email protected]. Support: [email protected]. Website: https://cubesudoku.com. Android application identifier: com.stefantoth.cubesudoku.