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Terms of Use

Effective Date: June 9, 2026
Last Updated: June 9, 2026

These Terms of Use (the “Terms”) set forth the conditions for using the smartphone game application “Hexa Fit: Brain Block Puzzle” (also referred to as “Hexa Fit”), related services, in-game features, content, advertisements, paid features, and any other services related thereto (collectively, the “Services”) provided by Koh Kobayashi (“we,” “us,” or “our”).

By installing, launching, accessing, or using the Services, you agree to be bound by these Terms. If you do not agree to these Terms, please do not use the Services.

1. Definitions

For the purposes of these Terms, the following terms shall have the meanings set forth below:

  1. “User” or “you” means any individual who uses the Services.
  2. “App” means the game application “Hexa Fit: Brain Block Puzzle” and related software provided by us. The App may also be referred to as “Hexa Fit.”
  3. “Content” means any game content, puzzles, levels, images, sounds, music, designs, user interfaces, text, programs, data, advertisements, and all other information displayed, provided, generated, recorded, or used within the Services.
  4. “Game Data” means progress data, unlocked piece counts, XP, settings, play history, advertisement-related progress, hint usage, data stored on your device or on servers, and any other data generated through your use of the Services.
  5. “Paid Services” means any paid features or content, including but not limited to ad removal, additional features, subscriptions, one-time purchases, and in-game items.
  6. “Third-Party Services” means services provided by third parties other than us, including but not limited to the App Store, Google Play, advertising providers, analytics providers, cloud services, payment processors, and platform services.

2. Agreement to These Terms

  1. You shall use the Services only after agreeing to these Terms, our Privacy Policy, in-game rules, notices, help pages, guidelines, and any other terms displayed in connection with the Services.
  2. If you are a minor, you must obtain the consent of your parent or legal guardian before using the Services. If a minor uses the Services, such use shall be deemed to have been made with the consent of their legal guardian.
  3. If a minor uses Paid Services or views advertisements that grant in-game rewards, such use must be made under the consent and supervision of their legal guardian.
  4. Legal guardians are responsible for appropriately managing minors’ use of the Services, including purchases, advertisement viewing, rewarded advertisements, and use of Third-Party Services.

3. Changes to These Terms

  1. We may modify these Terms when reasonably necessary, including due to changes in laws, changes to the Services, operational needs, security reasons, or changes in Third-Party Services.
  2. When we modify these Terms, we will notify users of the revised Terms and their effective date by appropriate means, such as in-app notice, website posting, store listing, or other reasonable methods.
  3. If you continue to use the Services after the revised Terms take effect, you will be deemed to have agreed to the revised Terms.
  4. If you do not agree to the revised Terms, you must stop using the Services.

4. License

  1. Subject to your compliance with these Terms, we grant you a non-exclusive, non-transferable, non-sublicensable, revocable, limited license to use the Services for your personal, non-commercial entertainment purposes.
  2. This license does not transfer to you any ownership rights, copyrights, trademarks, or other intellectual property rights in or to the Services or Content.
  3. You shall use the Services in accordance with these Terms, applicable laws, store terms, and the terms of any applicable Third-Party Services.
  4. Unless expressly permitted by us, you may not use the Services for commercial purposes.

5. Game Rules, XP, Hints, and Game Data

  1. The Services provide puzzle gameplay in which users arrange hexagonal block pieces, solve puzzles, earn XP, unlock higher piece counts, use hints, and progress through the game.
  2. XP, unlocked content, hint usage, advertisement-related progress, settings, and other Game Data may be stored on your device or through Third-Party Services.
  3. Game Data may be lost or reset due to device changes, app deletion, OS updates, storage restrictions, bugs, communication failures, or failures of Third-Party Services.
  4. We do not guarantee that Game Data will always be preserved, restored, transferred, or displayed correctly.
  5. We may change game balance, XP rewards, unlock requirements, puzzle generation rules, hint behavior, advertisement timing, and other game specifications when necessary for improvement, operation, bug fixes, or balance adjustment.
  6. You agree that we may use Game Data as necessary for providing, maintaining, improving, debugging, securing, and operating the Services, as well as preventing fraud or abuse. Personal information will be handled in accordance with our Privacy Policy.

6. Advertisements and Rewarded Ads

  1. The Services may display advertisements, including banner ads, interstitial ads, rewarded ads, video ads, and other types of advertisements.
  2. Interstitial ads may be displayed based on gameplay progress, XP accumulation, clear timing, or other in-game conditions.
  3. Rewarded advertisements may be displayed when users choose to receive in-game benefits, such as hints or other rewards.
  4. Even if in-game rewards are offered through rewarded ads, ads may not be displayed, rewards may not be granted, or reward reflection may be delayed due to communication failures, ad provider issues, device settings, OS restrictions, lack of ad inventory, fraud detection, or other reasons.
  5. Advertisement frequency, advertisement format, reward content, reward conditions, and advertisement timing may be changed without prior notice for operational, technical, legal, or game balance reasons.
  6. You must not engage in fraudulent ad viewing, false installs, invalid traffic generation, automated ad interactions, reward abuse, or any other misuse of advertising systems.
  7. Advertisements, advertiser services, and external websites or apps accessed through advertisements are governed by the terms and privacy policies of the relevant advertisers or third parties.
  8. We do not guarantee the content, accuracy, legality, safety, or quality of advertiser products, services, or external websites. We shall not be liable for any damages arising from advertisements or advertiser services, except in cases of our intentional misconduct or gross negligence.

7. Paid Services, Purchases, and Refunds

  1. The Services may offer Paid Services, including but not limited to ad removal, additional features, subscriptions, one-time purchases, and in-game items.
  2. The price, content, duration, terms of use, renewal conditions, cancellation method, and refund conditions of Paid Services shall be governed by the information displayed in the app, the applicable app store, payment processor, or Third-Party Service.
  3. Purchases, billing, cancellation, refunds, and payment method management conducted through the App Store, Google Play, or other external payment services are subject to the terms and procedures of the applicable platform or payment processor.
  4. If subscriptions are provided, you must cancel them through the settings screen of the applicable platform. Deleting the app alone may not cancel a subscription.
  5. After purchasing Paid Services, refunds will not be provided except where required by law or permitted under the rules of the applicable platform.
  6. We may change, add, suspend, or terminate the content, price, terms, duration, and applicable features of Paid Services in accordance with applicable laws and platform rules.
  7. Purchases by minors must be made with the consent and supervision of their legal guardian.

8. Sound, BGM, and Device Environment

  1. The Services may provide sound effects, background music, and audio settings.
  2. Sound effects, background music, and audio behavior may differ depending on device model, OS version, system settings, silent mode, external music playback, headphones, Bluetooth devices, or Third-Party Services.
  3. We do not guarantee that sound effects, background music, or audio mixing with other apps will always function correctly on all devices or environments.
  4. You are responsible for managing your device volume, sound settings, notification settings, and surrounding environment when using the Services.

9. Prohibited Conduct

You must not engage in any of the following acts or any acts that may fall under the following:

  1. Violating laws, public order and morals, these Terms, store terms, or Third-Party Service terms.
  2. Criminal acts, fraudulent acts, or acts that encourage them.
  3. Exploiting bugs, errors, or unintended specifications of the Services.
  4. Cheating, modification, hacking, reverse engineering, decompiling, disassembling, source code analysis, communication analysis, data tampering, memory modification, score manipulation, unlock manipulation, XP manipulation, or save data modification.
  5. Using bots, scripts, macros, automation tools, scraping, crawlers, data mining, or other unauthorized methods to use, analyze, collect from, or operate the Services.
  6. Interfering with, overloading, bypassing, or compromising the Services’ systems, advertisements, payment processing, authentication, or security features.
  7. Unauthorized access, unauthorized use of another person’s account or device, impersonation, or transmission of false information.
  8. Defaming, threatening, harassing, discriminating against, using violent expressions toward, using sexual expressions toward, or otherwise harming other users, third parties, or us.
  9. Infringing the personal information, privacy, portrait rights, reputation, credit, intellectual property rights, or other rights of others.
  10. Sending, distributing, or introducing viruses, malware, or other harmful programs.
  11. Selling, lending, transferring, sharing, exchanging, pledging, or commercially exploiting the Services, Content, Game Data, accounts, access rights, or Paid Services without our permission.
  12. Unauthorized use of our or any third party’s trademarks, logos, images, sounds, music, designs, UI, game systems, text, programs, or other intellectual property.
  13. Using or analyzing the Services for the purpose of creating or providing identical or similar services, games, tools, cheats, analysis tools, or competing products.
  14. False inquiries, false reports, excessive inquiries, or abuse of support channels.
  15. Fraudulent ad viewing, invalid clicks, false installs, unauthorized reward acquisition, payment abuse, or refund abuse.
  16. Any other act that we reasonably determine to be inappropriate from the perspective of service operation, user protection, security, or rights protection.

10. Measures Against Violations

  1. If we reasonably determine that you have violated or may violate these Terms, we may take the following measures without prior notice:
  1. Cautions or warnings.
  2. Deletion, correction, reset, or adjustment of Game Data, XP, unlocked content, scores, rewards, or displayed content.
  3. Restriction of certain features.
  4. Suspension or invalidation of rewards, Paid Services, advertisement rewards, or eligibility for features.
  5. Suspension of use by account or device.
  6. Restriction of access to the Services.
  7. Preservation of logs and evidence related to misconduct.
  8. Reporting or provision of information to Third-Party Services, advertising providers, payment processors, app stores, police, courts, administrative agencies, or other relevant organizations.
  9. Any other measures we deem necessary and appropriate.
  1. We shall not be liable for any damages caused to you by the measures set forth in the preceding paragraph, except in cases of our intentional misconduct or gross negligence.
  2. If your violation of these Terms causes damages to us or a third party, you shall be liable for such damages to the extent permitted by law.

11. Intellectual Property Rights

  1. All copyrights, trademarks, patents, design rights, know-how, other intellectual property rights, and ownership rights related to the Services and Content belong to us or the rightful third-party owners.
  2. You may not copy, reproduce, distribute, sell, lend, adapt, modify, publish, transmit, analyze, create derivative works from, or commercially use the Services or Content beyond the scope permitted by these Terms.
  3. You may use screenshots, gameplay videos, promotional images, and similar materials from the Services for non-commercial introductions, reviews, commentary, gameplay videos, or social media posts, provided that such use does not violate laws, public order and morals, our or any third party’s rights, mislead others, imply official approval by us, encourage cheating or unauthorized use, reveal excessive spoilers, or otherwise constitute inappropriate use as determined by us.
  4. If you post, transmit, upload, or input any content into the Services, you represent and warrant that you have all necessary rights to such content.
  5. We may use content provided by you to the extent necessary for providing, displaying, storing, processing, detecting fraud, improving, supporting, promoting, and complying with laws in relation to the Services.

12. Third-Party Services

  1. The Services may integrate with the App Store, Google Play, advertising services, analytics services, cloud services, payment services, and other Third-Party Services.
  2. Your use of Third-Party Services is subject to the terms, privacy policies, guidelines, fees, age restrictions, and regional restrictions of the relevant Third-Party Services.
  3. We shall not be liable for the content, continuity, accuracy, safety, legality, failures, specification changes, suspension, termination, data loss, account suspension, payment processing, or refund processing of Third-Party Services, except in cases of our intentional misconduct or gross negligence.
  4. Due to specification changes, suspension, termination, failures, reviews, or terms changes of Third-Party Services, all or part of the Services may become unavailable.

13. Changes, Suspension, and Termination of the Services

  1. We may change, add, suspend, interrupt, or terminate all or part of the Services without prior notice in the following cases:
  1. Maintenance, inspection, or updates of apps, servers, systems, networks, or Third-Party Services.
  2. Bugs, failures, communication failures, or changes to device, OS, store, or Third-Party Service specifications.
  3. When necessary for security, anti-cheat measures, fraud prevention, or user protection.
  4. Natural disasters, fire, power outages, infectious diseases, war, riots, legal or administrative requests, court orders, or other force majeure events.
  5. When necessary for business, technical, operational, legal, or platform-related reasons.
  1. We may change the content, features, difficulty, game rules, design, rewards, XP, advertisements, Paid Services, prices, regions, supported devices, and supported OS of the Services.
  2. We may delete, anonymize, organize, or migrate Game Data that has not been used for a long period, is suspected of fraud, or is difficult to store for operational reasons, in accordance with applicable laws and our Privacy Policy.
  3. We shall not be liable for any damages caused to you by changes, suspension, interruption, or termination under this Article, except in cases of our intentional misconduct or gross negligence.

14. Updates

  1. We may provide updates for the Services for improvement, bug fixes, security enhancement, feature additions, legal compliance, and Third-Party Service compatibility.
  2. If you do not install updates, all or part of the Services may become unavailable.
  3. Updates may change features, displays, game balance, data formats, storage methods, advertisements, Paid Services, audio behavior, and Game Data.
  4. In connection with updates, device information, app version, usage information, logs, and similar information may be collected or processed. Personal information will be handled in accordance with our Privacy Policy.

15. Privacy

  1. We respect your privacy and handle personal information in accordance with applicable laws and our Privacy Policy.
  2. Please refer to our Privacy Policy for information regarding the handling of personal information, device information, advertising identifiers, usage information, crash logs, analytics, advertising, purchase information, and inquiry information in connection with the Services.
  3. You shall review and understand our Privacy Policy before using the Services.

16. Disclaimer of Warranties

  1. The Services are provided on an “as is” and “as available” basis.
  2. We do not warrant that:
  1. The Services will be suitable for your specific purpose.
  2. The Services will always be accurate, complete, useful, or up to date.
  3. The Services will be free from interruptions, suspension, delays, errors, bugs, data loss, or security issues.
  4. The Services will operate properly on all devices, OS versions, browsers, communication environments, regions, or Third-Party Services.
  5. Advertisements, rewarded advertisements, purchases, sound effects, background music, audio mixing, cloud saves, or external integrations will always function properly.
  6. The Services will be free of viruses or other harmful components.
  7. The use of the Services will produce any specific results, scores, rewards, unlocked content, profits, or satisfaction.
  1. Game difficulty, puzzle generation, XP, rewards, advertisements, and displayed content may be changed due to specification changes, bug fixes, or balance adjustments.

17. Limitation of Liability

  1. We shall not be liable for any damages arising from or in connection with the use of, or inability to use, the Services, except in cases of our intentional misconduct or gross negligence.
  2. Even where we are liable, our liability shall be limited to direct, ordinary, and actually incurred damages. To the extent permitted by law, we shall not be liable for lost profits, indirect damages, special damages, incidental damages, consequential damages, data loss, business damages, or emotional distress.
  3. If we are liable in connection with Paid Services, our liability shall, to the extent permitted by law, be limited to the amount actually paid by you to us for the Paid Services that caused the damage during the one month immediately preceding the occurrence of the damage.
  4. If we are liable in connection with free Services, our liability shall be limited to a reasonable amount to the extent permitted by law.
  5. If consumer protection laws or other mandatory laws restrict the limitations in this Article, such limitations shall not apply to the extent of such restriction.
  6. The limitations of liability in this Article shall not apply in cases of our intentional misconduct or gross negligence.

18. User Responsibility and Indemnification

  1. You shall be responsible for your use of the Services, violations of these Terms, violations of laws, infringement of third-party rights, misconduct, submissions, purchases, advertisement interactions, and use of Third-Party Services.
  2. If damages, costs, claims, or disputes arise against us or a third party due to your intentional or negligent acts, violation of these Terms, violation of laws, or infringement of third-party rights, you shall compensate for such damages to the extent permitted by law.
  3. If consumer protection laws or other mandatory laws invalidate or limit any excessive indemnification obligation imposed on you, this Article shall apply only to the extent permitted by such laws.

19. Exclusion of Anti-Social Forces

  1. You represent and warrant that you are not a member of an organized crime group, a member of such group, a person associated with such group, a corporate racketeer, or any other equivalent anti-social force.
  2. You must not provide benefits to anti-social forces, lend your name to them, make threatening statements, make violent demands, make unreasonable demands, damage credibility, interfere with business, or engage in similar acts.
  3. If you violate this Article, we may suspend your use of the Services or take other necessary measures without prior notice.

20. Assignment

  1. You may not assign, transfer, pledge, or otherwise dispose of your status, rights, or obligations under these Terms to any third party without our prior written consent.
  2. In the event of a business transfer, merger, company split, business succession, change of operator, or similar transaction related to the Services, we may assign or transfer our status, rights and obligations under these Terms, Game Data, and user information to a third party in accordance with applicable laws and our Privacy Policy.

21. Severability

If any provision or part of any provision of these Terms is held to be invalid, illegal, or unenforceable under law or by a court or other competent authority, the remaining provisions and the remaining parts of such provision shall remain in full force and effect.

22. No Waiver

Our failure or delay in exercising any right under these Terms shall not be deemed a waiver of such right.

23. Governing Law and Jurisdiction

  1. These Terms shall be governed by and construed in accordance with the laws of Japan.
  2. Any dispute arising between you and us in connection with the Services or these Terms shall be subject to the exclusive jurisdiction of the Japanese court having jurisdiction over our location as the court of first instance, unless otherwise required by consumer protection laws or other mandatory laws.

24. Contact

For inquiries regarding these Terms or the Services, please contact us at:

Koh Kobayashi
Email: kksuited2026@gmail.com

When making an inquiry, please include the app name, device used, OS version, date and time of occurrence, details of the issue, and, for purchase-related inquiries, the order number issued by the applicable app store where available.