Terms of Service

Last updated: September 13, 2026

These Terms of Service (the “Terms”) set forth the conditions for use of the Prio web service and mobile application (collectively, the “Service”) provided by Akira Kawata (trade name: FREEWEB) (the “Operator”). By downloading, installing, or beginning to use the Service, you acknowledge that you have reviewed and agreed to these Terms.

For the iOS application, in any country or region where these Terms are applied as a custom EULA through App Store Connect, these Terms, including Section 14, apply as the EULA for the application. In any country or region where a custom EULA is not applied, Apple Inc.’s (“Apple”) Standard EULA applies, and these Terms additionally apply as Prio-specific service terms.

1. Description of the Service

The Service provides features for submitting forecasts regarding the Nikkei 225 and S&P 500, aggregating and displaying forecast results, viewing past results and forecast history, performance information, rankings, and related functions.

Forecasts, aggregated results, rankings, market information, and other information displayed through the Service are provided to support users’ information gathering and participation in forecasting within the Service. They are not intended to recommend the purchase, sale, or other investment decision concerning any specific financial instrument, and they do not guarantee any future price, return, or other result.

Some parts of the Service may be used without creating an account. Registration or sign-in may be required to use account-related features.

2. Accounts

If you use an account, you are responsible for appropriately managing your email address, password, and other authentication information. You must not lend, transfer, sell, or otherwise allow a third party to improperly use your authentication information.

You may delete your account using the account deletion feature provided within the Service. After deletion, the deleted account and its associations may not be recoverable.

When an account is deleted, account information and associations with public profile information are deleted. Forecast and voting records may continue to be retained without association with the account in order to preserve historical aggregates, rankings, and operational consistency. Details are set forth in the Privacy Policy.

3. Forecasts, Votes, and Display Names

You are responsible for forecasts or votes you submit and for the display name you configure within the Service.

Your display name may be shown to other users where necessary for features such as rankings and profiles. You agree that the Operator may display the display name to the extent necessary to provide the Service.

You must not use a display name that impersonates another person, infringes a third party’s rights, defames, threatens, or insults another person, or otherwise violates laws, regulations, or public order and morals.

If a violation of these Terms is confirmed, the Operator may, depending on the nature and impact of the violation, remove or hide the relevant display, restrict the account or use of the Service, or take other measures reasonably necessary.

4. License to Use the Service and Application

Copyrights, trademarks, and other intellectual property rights in the Service, application, software, screen designs, text, images, logos, databases, and other elements that make up the Service belong to the Operator or to third parties holding legitimate rights.

Subject to compliance with these Terms, applicable platform terms, and applicable law, the Operator grants you a non-exclusive and non-transferable right to use the Service.

Except where permitted by law or by an applicable open-source or other license, you must not reproduce, modify, redistribute, sell, rent, sublicense, reverse engineer, decompile, disassemble, analyze source code, or engage in similar acts with respect to all or any part of the Service or application.

5. Prohibited Conduct

You must not engage in any of the following when using the Service:

Conduct that violates laws, regulations, or public order and morals
Conduct that infringes a third party’s copyrights, trademarks, privacy, reputation, or other rights or interests
Impersonation, defamation, threats, or harassment of another person
Unauthorized access, improper acquisition of authentication information, or circumvention of Service security
Improper circumvention of duplicate-vote prevention or other technical restrictions
Manipulation or attempted manipulation of voting results, rankings, or other aggregated results
Automated access or other activity beyond ordinary use that places an excessive load on the Service’s servers, networks, or operations
Unauthorized resale, redistribution, or other commercial use of all or any part of the Service
Other conduct comparable to the foregoing that unreasonably interferes with operation of the Service or use by other users

6. External Services and Third-Party Information

The Service may use third-party services for functions including chart display, access analytics, infrastructure, and security. Terms of use or privacy policies of the relevant third-party providers may apply to those services.

Market information, charts, and other third-party information displayed through the Service may be delayed, incomplete, or contain discrepancies depending on the availability and timing of third-party services.

7. Privacy

The Operator’s handling of user information is governed by the separately established Privacy Policy.

8. Changes, Suspension, and Termination of the Service

The Operator may change the content of the Service or temporarily suspend all or part of it where there is a reasonable need to do so, including for improvement, maintenance, security measures, legal compliance, changes to external services, or technical or operational reasons.

Except in cases of emergency maintenance, serious failures, security incidents, or other circumstances where advance notice is difficult, the Operator will, to the extent reasonably practicable, provide advance notice through the Service or another appropriate method of changes, suspensions, or termination that may materially affect users.

9. Changes to These Terms

The Operator may amend these Terms in accordance with applicable law where the amendment is in the general interests of users, or where it is not contrary to the purpose of these Terms and is reasonable in light of the necessity of the amendment, the appropriateness of the amended terms, and other relevant circumstances.

When these Terms are amended, the Operator will notify users of the amended terms and their effective date by displaying them through the Service or by another appropriate method. If applicable law requires individual user consent for a change, the Operator will obtain the necessary consent separately.

10. Disclaimer of Warranties

The Service is provided on an “AS IS” basis. Except where warranties are required by applicable law, the Operator does not warrant that the Service will always be available, that it will be free of defects or failures, that it will meet any particular purpose of a user, or that displayed information will always be accurate, complete, or current.

Forecasts, aggregated results, rankings, and other information provided through the Service do not constitute investment advice and do not guarantee investment performance. Any investment or other decision must be made at the user’s own responsibility and judgment.

11. Limitation of Liability

Except where the Operator acts intentionally or with gross negligence, if the Operator is liable to a user in connection with the Service, such liability is limited to ordinary and direct damages actually incurred by the user as a result of a cause attributable to the Operator.

In such a case, the maximum amount of damages will be the total usage fees paid by the user for the Service during the three months immediately preceding the event giving rise to the damage; if that amount is less than JPY 1,000, including where no usage fees were paid, the maximum will be JPY 1,000.

The limitations in the preceding two paragraphs do not apply where the Operator acts intentionally or with gross negligence, to damage to life or body, or where limitation of liability is not permitted under applicable law.

Any limitation concerning lost profits, indirect damages, special damages, or other damages applies only to the extent permitted by applicable law.

12. Restrictions and Termination of Use

You may stop using the Service at any time. If you use an account, you may delete the account using the account deletion feature provided within the Service.

If you violate these Terms, if improper use or a security risk is identified, or if reasonably necessary to protect the Service or other users, the Operator may restrict your account or use of the Service depending on the nature and impact of the circumstances.

13. Governing Law and Jurisdiction

These Terms and legal relationships relating to the Service are governed by the laws of Japan.

If a dispute arises between the Operator and a user in connection with the Service, jurisdiction granted by applicable law will not be excluded, and the Chiba District Court and Tokyo District Court will additionally have agreed jurisdiction as courts of first instance.

14. Additional Terms for Apple

This Section applies to the Prio iOS application distributed through Apple’s App Store (the “Licensed Application” for purposes of this Section).

14-1. Acknowledgement

You and the Operator acknowledge that the license agreement concerning these Terms and the Licensed Application is concluded solely between the Operator and you, and not with Apple, and that the Operator, not Apple, is solely responsible for the Licensed Application and its content. These Terms do not provide usage rules that conflict with the Apple Media Services Terms and Conditions, Volume Content Terms, or other Apple terms or Usage Rules applicable to the Licensed Application. The Operator acknowledges having had the opportunity to review those terms.

14-2. Scope of License

The license granted to you for the Licensed Application is limited to a non-transferable license to use the Licensed Application on Apple-branded products that you own or control and as permitted by the Usage Rules set forth in the Apple Media Services Terms and Conditions, except that the Licensed Application may be accessed, acquired, or used by other accounts associated with the purchaser through Family Sharing, volume purchasing, or Legacy Contacts to the extent permitted by Apple’s rules.

14-3. Maintenance and Support

The Operator is solely responsible for providing maintenance and support services with respect to the Licensed Application to the extent specified in these Terms or required under applicable law. Apple has no obligation whatsoever to furnish any maintenance or support services with respect to the Licensed Application.

14-4. Warranty

The Operator is solely responsible for any express warranty or warranty implied by law relating to the Licensed Application, to the extent such warranty has not been effectively disclaimed or limited under applicable law. If the Licensed Application fails to conform to an applicable warranty, you may notify Apple, and Apple will, where applicable, refund the purchase price paid to Apple for the Licensed Application. To the maximum extent permitted by applicable law, Apple will have no other warranty obligation whatsoever with respect to the Licensed Application, and any other claims, losses, liabilities, damages, costs, or expenses attributable to a failure to conform to any warranty will be the Operator’s responsibility in accordance with applicable law.

14-5. Product Claims

You and the Operator acknowledge that the Operator, not Apple, is responsible for addressing any claims by you or any third party relating to the Licensed Application or your possession or use of the Licensed Application. Such claims include product liability claims, claims that the Licensed Application fails to conform to any applicable legal or regulatory requirement, and claims arising under consumer protection, privacy, or similar legislation, including, if the Licensed Application uses the HealthKit or HomeKit frameworks, claims relating to such use. These Terms do not limit the Operator’s liability to you beyond what is permitted by applicable law.

14-6. Intellectual Property Rights

You and the Operator acknowledge that, in the event of any third-party claim that the Licensed Application or your possession and use of the Licensed Application infringes that third party’s intellectual property rights, the Operator, not Apple, will be solely responsible for the investigation, defense, settlement, and discharge of that intellectual property infringement claim.

14-7. Legal Compliance

You represent and warrant that (i) you are not located in a country or region that is subject to a U.S. Government embargo or that has been designated by the U.S. Government as supporting terrorism, and (ii) you are not listed on any U.S. Government list of prohibited or restricted parties.

14-8. Developer Information and Contact Details

Questions, complaints, or claims concerning the Licensed Application should be directed to:

Developer: Akira Kawata (trade name: FREEWEB)
Address: 960-2, NISHIHIRAI NAGAREYAMA, Chiba 270-0156, Japan
Telephone: +81 70-9009-0565
Email: eerf0309+prio@gmail.com

14-9. Third-Party Terms of Agreement

When using the Licensed Application, you must comply with applicable third-party terms and conditions, including those of telecommunications providers, Apple, and any other third party whose terms apply to use of the Licensed Application.

14-10. Third-Party Beneficiary

You and the Operator acknowledge and agree that Apple and Apple’s subsidiaries are third-party beneficiaries of this EULA. Upon your acceptance of the terms and conditions of this EULA, Apple will have the right, and will be deemed to have accepted the right, to enforce this EULA against you as a third-party beneficiary.

15. Severability

If any provision of these Terms, or any portion thereof, is determined to be invalid or unenforceable under applicable law, the remaining provisions and the remainder of that provision will continue in effect to the extent permitted by law.

16. Contact

For inquiries regarding these Terms or the Service, please contact:

Operator: Akira Kawata (trade name: FREEWEB)
Address: 960-2, NISHIHIRAI NAGAREYAMA, Chiba 270-0156, Japan
Telephone: +81 70-9009-0565
Email: eerf0309+prio@gmail.com