Stack Cards Sort

Terms of Service

Last updated: September 18, 2026

Effective: September 18, 2026

These Terms of Service govern your use of the Stack Cards Sort app and website (stackcardssort.guseapp.com), published by Guse LTDA (CNPJ 47.758.713/0001-82). By using the Service you agree to these Terms.

1. Agreement to These Terms

These Terms are a binding agreement between you and Guse LTDA ("we", "us"). They cover the Stack Cards Sort iOS app (the "App") and this website (together, the "Service"). If you do not agree with them, please do not use the Service.

Your use of the Service is also subject to our Privacy Policy.

2. Who We Are

Guse LTDA, a company registered in Brazil under CNPJ 47.758.713/0001-82. Contact: contact@guseapp.com.

3. Eligibility

The App has no accounts: there is nothing to register, no username and no password. You simply download it and play.

You must be at least 13 years old to use the Service, or older where your country sets a higher age for agreeing to terms like these. If you are a minor, use the App only with the involvement of a parent or guardian, who is responsible for any purchase made on the device.

4. License to Use the App

We grant you a personal, non-exclusive, non-transferable, revocable licence to install and use the App on Apple-branded devices you own or control, as permitted by the App Store Terms of Service and by the Usage Rules in Apple's Media Services Terms and Conditions.

This is a licence, not a sale of the App. We keep all rights we do not expressly grant here.

5. Acceptable Use

You agree not to:

  • modify, decompile, reverse-engineer or create derivative works from the App, except where that is expressly allowed by law;
  • circumvent the purchase check for Pro, or distribute tools or instructions for doing so;
  • falsify leaderboard scores or achievements, or otherwise interfere with Game Center;
  • redistribute, resell, rent or sublicense the App;
  • use the App in a way that breaks the law where you are.

If you break these rules we may end your licence. Because there is no account, that means you must stop using the App; we have no profile to suspend.

6. The Pro Unlock

Stack Cards Sort is free to download, and the first 90 levels are free to play. Pro is a single one-time in-app purchase that unlocks every remaining level and gives you unlimited hints.

  • It is not a subscription. There is no recurring charge, no renewal and nothing to cancel.
  • Price is shown in the App and in the App Store in your local currency before you confirm. Prices vary by country and may change for future buyers; a change never affects a purchase you already made.
  • Payment is charged to your Apple Account at confirmation. We never see your card or billing details.
  • Pro is tied to your Apple Account. You can restore it on any device signed in to that account with Restore Purchases in the App's settings, at no extra cost.

7. Refunds

All purchases are processed by Apple, so refunds are handled by Apple, not by us. Request one at reportaproblem.apple.com. We cannot issue, approve or reverse a refund on Apple's behalf.

Statutory withdrawal and consumer rights in your country still apply; the EEA/UK and Brazilian notices below say more.

If something is genuinely broken, write to us at contact@guseapp.com — we would rather fix it than have you chase a refund.

8. Game Center and Leaderboards

Game Center is optional. If you are signed in to it, the App may submit your total stars to a leaderboard other players can see, report two achievements, and store a saved copy of your progress so you can continue on another device.

Game Center is Apple's service, governed by Apple's terms and privacy policy. We do not control it, and we cannot recover, transfer or delete Game Center data for you — manage it in your iOS settings under Game Center.

Everything else in the App works with Game Center turned off.

9. Third-Party Services

The Service relies on Apple (App Store, StoreKit, Game Center) and, for this website, on Cloudflare. Their terms govern their part, and we are not responsible for their availability or conduct.

10. Intellectual Property

The App, its levels, artwork, sound, name and logo are owned by Guse LTDA and protected by copyright and trademark law. You may take screenshots and record video of your own play and share them, including monetised videos and streams, as long as you do not present the game as your own or use our marks to imply we endorse you.

11. Feedback

If you send us an idea, bug report or suggestion, you grant us a perpetual, worldwide, royalty-free licence to use it without obligation or compensation. Please do not send us anything you consider confidential.

12. Your Game Progress

Your progress, settings and current level are stored on your device. Deleting the App deletes them. Unless you use Game Center or a device backup, they cannot be recovered — we have no copy, because we run no server.

We may change level content, difficulty or power-up behaviour in an update. We try to preserve progress across updates but cannot guarantee it, and we are not liable for progress lost to a device failure, a deleted app or a restored backup.

13. Disclaimer of Warranties

The Service is provided "as is" and "as available", without warranties of any kind, express or implied, including merchantability, fitness for a particular purpose and non-infringement. We do not warrant that the App will be uninterrupted, error-free, or free of every defect, or that every generated level is solvable in the exact number of moves you expect.

Some jurisdictions do not allow the exclusion of implied warranties, so parts of this section may not apply to you.

14. Limitation of Liability

To the maximum extent permitted by law, Guse LTDA is not liable for indirect, incidental, special, consequential or punitive damages, or for lost data or lost game progress.

Our total liability for any claim relating to the Service is limited to the amount you actually paid us for the App in the 12 months before the claim — which, if you never bought Pro, is zero.

Nothing here limits liability that cannot be limited by law, including liability for fraud or for death or personal injury caused by negligence.

15. Indemnification

You agree to indemnify and hold harmless Guse LTDA from claims, damages and reasonable legal costs arising out of your misuse of the Service or your breach of these Terms.

16. Governing Law

These Terms are governed by the laws of Brazil, without regard to conflict-of-law rules. This does not deprive you of the protection of mandatory consumer law in your country of residence.

17. Informal Dispute Resolution

Before starting formal proceedings, please write to contact@guseapp.com describing the problem. Most issues are resolved this way. We ask for 30 days to respond before you escalate, and we will do the same.

18. Binding Arbitration (US Users Only)

If you are in the United States and we cannot resolve a dispute informally, you and we agree to resolve it by binding individual arbitration administered by the American Arbitration Association under its Consumer Arbitration Rules, rather than in court, except that either party may bring an individual claim in small-claims court.

Arbitration will take place in the county where you live or by video, at your choice, and the arbitrator may award the same individual relief a court could.

19. Class-Action Waiver (US Users Only)

You and we agree that claims may be brought only in an individual capacity, and not as a plaintiff or class member in any class or representative proceeding. If this waiver is held unenforceable as to a particular claim, that claim is severed and heard in court.

20. Arbitration Opt-Out (US Users Only)

You may opt out of the arbitration and class-waiver sections by emailing contact@guseapp.com with the subject "Arbitration Opt-Out" within 30 days of first using the App. Opting out does not affect the rest of these Terms.

21. Changes to These Terms

We may update these Terms. The current version is always at stackcardssort.guseapp.com/terms, with the date at the top. For material changes we will give notice in the App or on this website before they take effect. Continuing to use the Service after that means you accept the new version; if you do not, stop using the Service.

A change to these Terms never retroactively alters a purchase you have already made.

22. General Provisions

These Terms and the Privacy Policy are the entire agreement between us about the Service. If a provision is found unenforceable, the rest stays in force. Our failure to enforce a right is not a waiver of it. You may not assign these Terms; we may assign them in a merger or sale of the business.

23. Apple-Specific Terms

You acknowledge that these Terms are between you and Guse LTDA, not Apple, and that Apple is not responsible for the App or its content. Apple has no obligation to provide maintenance or support for the App. If the App fails to conform to any applicable warranty, you may notify Apple and Apple will refund the purchase price; to the maximum extent permitted by law, Apple has no other warranty obligation.

Apple is not responsible for addressing product-liability, third-party intellectual-property or consumer-protection claims relating to the App. Apple and its subsidiaries are third-party beneficiaries of these Terms and may enforce them against you.

24. Notice to California Users

Under California Civil Code §1789.3, California users may contact the Complaint Assistance Unit of the Division of Consumer Services of the California Department of Consumer Affairs at 1625 North Market Blvd., Suite N 112, Sacramento, CA 95834, or by telephone at (800) 952-5210.

25. Notice to EEA, UK and Swiss Users

You have a statutory right to withdraw from a digital purchase within 14 days. Because the Pro unlock takes effect immediately, by confirming the purchase you ask for immediate performance and acknowledge that you lose this right once the content is delivered — a condition Apple presents at checkout.

You also keep your statutory rights in respect of faulty digital content, and you may use the EU Online Dispute Resolution platform at ec.europa.eu/consumers/odr.

26. Notice to Brazilian Users

O Código de Defesa do Consumidor (Lei nº 8.078/1990) aplica-se à sua relação com a Guse LTDA. Você tem direito de arrependimento de 7 dias corridos a partir da compra (art. 49). Como a compra é processada pela Apple, o reembolso deve ser solicitado em reportaproblem.apple.com; se precisar de ajuda, escreva para contact@guseapp.com. Disputas serão submetidas ao Foro da Comarca de São Paulo, SP, Brasil.

27. Export Controls

You represent that you are not located in, or a national of, any country subject to a U.S. Government embargo, and that you are not on any U.S. Government prohibited-party list. You may not export or re-export the App in violation of applicable export laws.

⚠️ These Terms of Service are a draft and do not constitute legal advice. Guse LTDA should have a qualified attorney review them before publishing, particularly regarding multi-jurisdictional consumer-protection law and arbitration enforceability.