Effective August 25, 2026

Terms of Use

These Terms of Use (the “Terms”) are an agreement between you and ZW Studio LLC, a limited liability company formed in the State of New Jersey, United States (“we”, “us”, “our”). They cover the Deduce Daily website at deducedaily.com (the “Site”) and the Deduce Daily apps for iPhone, iPad and Android published as com.deducedaily.app (the “Apps”, and each an “App”; the iPhone and iPad app is the “iOS App” and the Android app the “Android App”). The Site and the Apps together are the “Service”.

You accept these Terms by using the Service. If you do not accept them, do not use the Site and do not install or use an App. These Terms are concluded between you and ZW Studio LLC alone. Apple and Google are not parties to them.

1. What Deduce Daily is

Deduce Daily is a collection of logic puzzles and a daily challenge, played in a web browser or as an app on a phone or tablet. It is free. There is no account, no sign-up and no credentials of any kind. There are no purchases and no subscriptions. There are no ads in the Apps, and no advertisement is displayed on the Site today. The Apps play with no network connection, though the Site must be loaded over the network first. We may add, change or remove games and features.

2. Who may use the Service

You must be at least 13 years old to use the Service, or older if the age of digital consent in the country where you live is higher than 13. If you are under the age of majority where you live, you may use the Service only with the agreement of a parent or guardian, who accepts these Terms on your behalf. The Service is intended for a general audience. It is not directed to children under 13.

3. Your license

We grant you a personal, non-exclusive, non-transferable, non-sublicensable license to use the Site and the Android App, and the content we make available through them, for your own personal, non-commercial purposes, for as long as you comply with these Terms. If you obtained the Android App from Google Play, the license is to use it on devices that you own or control. You may not redistribute, sell, rent, lease or sublicense an App or any part of it, and all rights not expressly granted are reserved. Section 4 permits screenshots. Your license to use the iOS App is granted on Apple’s standard terms rather than here, as section 5 explains.

4. Screenshots, and stopping

You may play as much as you like and link to any page of the Site. You may reproduce screenshots of a puzzle board, including for commercial purposes, without asking our permission — in either App as well as on the Site. This covers board images only, not the software, the written strategy guides or other text. You may stop using the Service at any time, at no cost, by deleting an App or clearing the Site’s storage in your browser. We hold no account for you, so there is nothing to close.

5. If you got an App from an app store

If you obtained the iOS App from the App Store, we grant your license to use it on the terms of Apple’s standard Licensed Application End User License Agreement, which forms part of the App Store terms you accepted and which Apple publishes at apple.com/legal/internet-services/itunes/dev/stdeula. We are the licensor of the iOS App; Apple supplies the form of that agreement, not the license itself. These Terms are not that agreement and do not change it. They sit alongside it and govern your use of the Service, and where the two conflict as to your license to use the iOS App, that agreement prevails.

Apple and Google are not parties to these Terms. ZW Studio LLC, not the store, is responsible for the Apps and provides support, at support@zwstudiollc.com. Your download of an App, and any refund, are governed by that store’s own terms.

6. What you may not do

You agree not to:

• copy a substantial part of the Site or of an App, or present the Service as your own;
• reverse engineer, decompile or disassemble an App, except to the extent that this restriction is prohibited by applicable law, including where you are entitled to decompile in order to achieve interoperability;
• interfere with the operation or the security of the Service;
• use the Service in breach of applicable export control or economic sanctions law, or while you are located in, or are a person listed under, a sanctions regime that prohibits your use of it;
• use the Service for an unlawful purpose; or
• use the Service in breach of any applicable third-party terms.

Your license ends if you break these Terms, and when you delete an App and stop using the Site.

7. Who owns what

The software, the puzzles, the written strategy guides, the text, the artwork and the design of the Service are owned by ZW Studio LLC and protected by copyright and other intellectual property rights, in the Apps as on the Site. Every puzzle board is produced by our own software; we do not reproduce puzzles from published collections. The underlying rules of the traditional games implemented in the Service are owned by no one, and nothing in these Terms claims otherwise.

8. Privacy

Our Privacy Policy explains what the Service collects, why, who receives it, and the choices available to you. It is incorporated into these Terms by reference. Where these Terms and the Privacy Policy describe the same thing, rely on the Privacy Policy.

9. No warranty, and the limits of our liability

To the extent permitted by applicable law, the Service is provided “as is” and “as available”, without warranties of any kind, express or implied, including the implied warranties of merchantability, fitness for a particular purpose and non-infringement. We do not warrant that the Service will be uninterrupted or free of errors, or that your progress will persist: progress is stored on your device, and clearing the Site’s storage in your browser, deleting an App, or moving to a device that does not restore the App’s backup will clear it.

To the extent permitted by applicable law, we will not be liable for any indirect, incidental, special, consequential or punitive damages, or for any loss of profits or goodwill, and our total liability arising out of or in connection with these Terms and the Service will not exceed one hundred United States dollars (US$100). If you are a consumer, that cap does not apply to any right or remedy you have under mandatory consumer law, including the responsibility stated in the next sentence. We remain responsible for loss of or damage to data or other digital content on your device where that loss or damage results from our failure to exercise reasonable care and skill.

Nothing in these Terms excludes or limits our liability for death or personal injury caused by our negligence, for fraud or fraudulent misrepresentation, or for anything else that cannot lawfully be excluded or limited. Some jurisdictions do not allow certain exclusions, so parts of this section may not apply to you.

10. Your rights as a consumer

Nothing in these Terms excludes, limits or affects any right or remedy you have under the mandatory consumer law of the country where you live. Where a provision of these Terms conflicts with such a right or remedy, that right or remedy prevails, and the provision does not apply to you to the extent of the conflict. These Terms contain no arbitration agreement and no waiver of class or representative proceedings.

11. Changes

We may change the Service or these Terms — to reflect a change in the law or in an app store’s requirements, a change to the Service itself, or a change in a service we rely on. Changes apply only to your use of the Service after they take effect, and are never retrospective. If we make a material change, we will publish the amended Terms at deducedaily.com/terms with a new effective date, and the change will take effect no earlier than 30 days after that publication, unless the law, a regulator or an app store requires it sooner. If you do not accept a change, stop using the Service; you may do so at any time and at no cost.

12. Governing law and where disputes are heard

These Terms, and any dispute arising out of them or out of the Service, are governed by the law of the State of New Jersey, United States, without regard to its conflict of law rules. The United Nations Convention on Contracts for the International Sale of Goods does not apply. If you are a consumer, this choice of law does not deprive you of the protection of any mandatory provision of the law of the country where you live, you may bring proceedings in the courts of that country, and we will bring proceedings against you only there. If you are not a consumer, you and we submit to the exclusive jurisdiction of the state and federal courts located in the State of New Jersey, United States.

13. General, and how to reach us

If any provision of these Terms is held to be unenforceable, the remaining provisions continue in effect. A failure to enforce a provision is not a waiver of it. These Terms and the Privacy Policy are the entire agreement between you and ZW Studio LLC regarding the Service, together with Apple’s agreement for the iOS App and Google Play’s terms for the Android App; this does not limit any liability we have for what we told you about the Service before you began using it. You may not assign or transfer your rights under these Terms; we may assign ours to a successor, provided that your rights are not reduced. The current version of these Terms is always published at deducedaily.com/terms, and you may save or print it at any time.

ZW Studio LLC, a limited liability company formed in the State of New Jersey, United States, is the operator of Deduce Daily and your counterparty under these Terms. Send any question, complaint or claim to support@zwstudiollc.com. If you need a postal address in order to serve formal legal notice, ask us there and we will supply one.