Terms of Use

Effective date: November 11, 2026

These terms cover your use of the Sudokill app and website, provided by Retrograde Labs LLC ("we", "us"). By downloading, opening or using Sudokill, you agree to them. If you don't agree, don't use Sudokill.

Three documents apply together: these terms, Apple's Standard License Agreement (below) and our Privacy Policy.

Who can play

Sudokill is made for teens and adults, not for children under 13. If you are under 18, or under the age of majority where you live, a parent or guardian must agree to these terms for you. They are responsible for purchases made on their Apple Account.

The game

Sudokill is free to play. You may use it for personal, non-commercial entertainment. Don't cheat in ways that harm the service, reverse engineer the app, or use it unlawfully. We may change the game, including adding, fixing or removing features and cases.

Purchases

Sudokill is free to play, with optional one-time purchases. There is no subscription.

Apple processes every purchase under the App Store terms. Refunds are handled by Apple: you can ask for one at reportaproblem.apple.com. We can't issue refunds ourselves.

Remove Ads belongs to the Apple Account that bought it. To get it back, for example on a new phone, open Settings in the app and tap Restore purchases. Unused hints stay with your player. If you never signed in with Apple and you lose or reset your phone, we may not be able to bring them back.

Nothing in these terms takes away a right to a refund, to cancel or to withdraw that you have under the law where you live.

Apple's standard EULA

The app is licensed to you under Apple's Standard License Agreement (the "Apple EULA"), which applies in addition to these terms: apple.com/legal/internet-services/itunes/dev/stdeula. If these terms and the Apple EULA conflict about your licence to use the app, the Apple EULA wins. Apple is not a party to these terms and is not responsible for Sudokill or its support. Contact us instead.

Accounts

Signing in with Apple is optional. You can delete your account at any time in the app's Settings. Deleting it can't be undone: your progress and the hints you hold, including bought ones, are deleted with it. Remove Ads comes back with Restore purchases in Settings.

Content

The puzzles, story text, art and code in Sudokill belong to us or our licensors. All characters and events are fictional.

Ending your use

You can stop using Sudokill at any time. We may suspend or end your access if you seriously or repeatedly break these terms, or if the law requires it. We may also stop offering Sudokill. If we do, we will say so on sudokill.app at least 30 days before it closes.

No warranty

The game is provided "as is" and "as available", without warranties of any kind, to the extent the law allows. We don't promise it will be error-free or always available.

Limit of liability

To the extent the law allows, we are not liable for losses that were not reasonably foreseeable, for loss of profits or data, or for indirect or consequential losses. To the extent the law allows, our total liability to you for all claims about Sudokill is limited to the greater of USD 50 and what you paid for purchases in Sudokill in the 12 months before the event that led to the claim.

Nothing in these terms limits our liability for death or personal injury caused by our negligence, for fraud, or for anything else the law does not allow us to limit. If you are a consumer, you keep the rights the law gives you. For example, in the EU, the EEA and the UK, digital content must match its description and be of satisfactory quality.

Changes

We may update these terms. We post the new version here with a new effective date. If a change is important, we will say so on this website at least 30 days before it applies, unless the law or security needs it sooner. If you keep using Sudokill after the new terms apply, they apply to you. If you don't agree, stop using Sudokill.

Law and disputes

These terms are governed by the laws of the State of Wyoming, United States, without regard to its conflict of laws rules. If you live in the EU, the EEA or the UK, you also keep the protection of the mandatory consumer laws of the country where you live, and you can bring a claim in its courts.

Please talk to us first at support@sudokill.app. Most problems can be fixed quickly. Otherwise, and subject to the paragraph above, disputes are decided by the state courts in Natrona County, Wyoming, or the United States District Court for the District of Wyoming.

General

If a court finds part of these terms unenforceable, the rest still applies. If we don't enforce a right straight away, we can still enforce it later. We may transfer these terms to a company that takes over Sudokill, and your rights won't be reduced by that. These terms, the Apple EULA and our Privacy Policy are the whole agreement between you and us about Sudokill.

Contact

Retrograde Labs LLC
312 W 2nd St Unit #A2299
Casper, Wyoming 82601
United States
support@sudokill.app