Effective Date: 2026-08-07 · Last Modified: 2026-08-07

1. About These Terms

Thank you for using BioHACK (the "Service"). These Terms are an agreement between you and IAIU (아이에이아이) (the "Company"). By using the Service, you are deemed to have agreed to these Terms.

These Terms include the following — please be sure to read them: the disclaimer regarding health information (§4), assumption of risk for exercise (§5), auto-renewing subscriptions (§9), limitation of liability (§15), and dispute resolution (§16).

2. Eligibility and Age

You must be at least 16 years old to use the Service. If your country of residence requires a higher age for consent to the processing of personal information, that age applies.

Purchasing a paid subscription requires you to be at least 18 years old, or to have reached the age of majority in your country of residence.

The following features are available only to users 18 and older: supplement-related cards, intermittent fasting cards.

If you are under 16, please do not use the Service. The Company does not knowingly collect personal information from anyone under 16, and if we become aware that we have done so, we will delete it immediately.

3. Service Description

BioHACK is an app that helps with self-care across three domains — body, mind, and social. It provides:

• Exercise programs and pose guidance
• Audio-based relaxation and focus sessions
• Sleep, diet, and lifestyle guidance
• General information about supplements and nutrition
• Daily self-assessment records and activity logs
• Communication features between users (feed, chat)

The Company may change the content of the Service or discontinue certain features. We will provide advance notice of changes that materially affect paid subscriptions.

4. Disclaimer Regarding Health Information — Please Read Carefully

BIOHACK IS NOT A MEDICAL DEVICE AND DOES NOT PROVIDE MEDICAL ADVICE.

BIOHACK IS NOT DESIGNED TO DIAGNOSE, TREAT, MITIGATE, MANAGE, OR PREVENT ANY DISEASE OR HEALTH CONDITION.

All content in the Service is provided for general health and wellness informational purposes only. Using the Service does not create a physician-patient relationship.

Please consult a medical professional with any health questions. Do not disregard medical advice or delay seeking care because of something you saw in the Service.

The Service is not intended for emergencies. If you are experiencing an emergency, immediately contact 119 (or the applicable emergency number in your country).

Detailed safety notices — covering exercise risk, supplements, audio sessions, and fasting contraindications — are set out in the [Medical Disclaimer and Safety Notice] document, which forms part of these Terms.

5. Exercise — Assumption of Risk

Physical activity carries inherent risks, including injury, aggravation of existing conditions, and, in rare cases, death or property damage. You agree that you undertake such activities entirely at your own risk and responsibility.

The Company is not a substitute for a personal trainer and does not provide in-person instruction or form correction. The on-screen guidance is general in nature and does not account for your physical condition, injury history, or surroundings.

If you experience chest pain, dizziness, fainting, shortness of breath, or sharp pain during exercise, stop immediately and seek medical attention.

6. Accounts

You must create your account with accurate information and keep it up to date. You are responsible for the security of your account access credentials and must notify the Company immediately if you become aware of any unauthorized use.

Your account is for your use only and may not be transferred to or shared with others.

Account Deletion: You may delete your account at any time from the in-app settings. Deleting your account also deletes your account information and any posts or messages you have submitted. If you have a subscription, you must cancel it separately from deleting your account for billing to stop (see §9).

7. User Content

7.1 Your Content

You are responsible for the posts, comments, messages, and records (collectively, "User Content") you submit to the Service. The Company does not guarantee the accuracy of User Content.

You retain copyright in your User Content. However, you grant the Company the right to store, reproduce, and display it to the extent necessary to operate and provide the Service. This grant terminates when you delete the content (except where retained for backup or legal preservation obligations).

7.2 Prohibited Content and Conduct

You may not post or transmit the following:

• Content that harasses, threatens, insults, mocks, or humiliates others, including body-shaming
• Hate speech or incitement to discrimination based on race, national origin, gender, sexual orientation, religion, age, disability, or similar characteristics
• Content that promotes or glorifies violence or self-harm
• Nudity or sexually explicit or suggestive content
• False or misleading health information that could endanger the health or safety of others
• Sharing or soliciting others' private information without consent
• Content that infringes the intellectual property rights of others
• Spam, advertising, multi-level marketing, or unauthorized commercial promotion
• Scraping or manipulating the Service through automated means
• Content that violates applicable law

7.3 Reporting, Blocking, and Enforcement

• You may report content and users within the Service.
• You may block other users within the Service. Once blocked, neither party can see the other's content.
• Upon receiving a report, the Company will review it within a reasonable time, and if a violation of these Terms is confirmed, will take appropriate action, which may include removing content, issuing a warning, restricting features, suspending the account temporarily, or terminating the account permanently.
• If you disagree with an enforcement action, you may appeal within 6 months of the action, and the appeal will be reviewed by a human.
• Contact for inquiries and reports: support@iaiu.net

8. The Company's Rights

The Company may remove content or restrict access without prior notice if it suspects a violation of these Terms. The Company may suspend or terminate an account for repeated or serious violations.

9. Paid Subscriptions

9.1 Automatic Renewal

Your subscription automatically renews at the end of each billing period until you cancel, and you will be charged the then-current price. The subscription period and amount are displayed at the time of purchase.

9.2 Cancellation

If you do not cancel, billing will continue.

• If you purchased through the App Store: you must turn off automatic renewal at least 24 hours before the end of the current period, via iOS Settings → Apple Account → Subscriptions.
• If you purchased through Google Play: you must cancel via Play Store → Subscriptions.

Cancellation takes effect at the end of the current billing period. You may continue to use the Service until the end of that period, and no prorated refund will be provided for the remaining period (except as required by law).

Deleting the app or deleting your account does not automatically cancel your subscription. You must cancel through the channels described above.

9.3 Free Trials

If a free trial is offered, it automatically converts to a paid subscription and is billed once the trial period ends. The trial period and the post-conversion price are displayed on the sign-up screen. If you do not want to be billed, you must cancel before the trial ends.

9.4 Price Changes

If the Company changes prices, it will provide notice at least 15 days before the change takes effect. If you do not agree to the new price, you may cancel before it takes effect.

9.5 Payment Processing

Payments are processed through Apple or Google, and each store's terms and refund policies apply in addition. Refunds must generally be requested through the applicable store.

10. Scope of Content Use

The Company grants you a limited, non-transferable right to use the Service for personal, non-commercial purposes. You may not reproduce, distribute, create derivative works from, or reverse-engineer the Service's content (exercise programs, audio, images, text, software).

11. Third-Party Services

The Service uses third-party services for authentication (Google Sign-In), data storage, and content delivery. Those third parties' own terms and privacy policies apply to their services.

12. Privacy

The handling of personal information is governed by the Privacy Policy.

In summary: your daily self-assessment records and activity logs are stored on your device and are not transmitted to the Company's servers. Account information, content you post to the social feed or chat, and anonymous usage statistics are stored on our servers. See the Privacy Policy for details.

13. Service Interruption and Changes

The Company may change or discontinue all or part of the Service. For interruptions that materially affect paid subscribers, the Company will provide advance notice and, where necessary, take action corresponding to the remaining subscription period.

14. No Warranty

The Service is provided "as is." To the extent permitted by law, the Company makes no warranty, express or implied, of merchantability, fitness for a particular purpose, accuracy, or uninterrupted operation.

The Company does not warrant the accuracy, completeness, or currency of the health information provided in the Service.

15. Limitation of Liability

To the maximum extent permitted by law, the Company is not liable for any indirect, incidental, special, consequential, or punitive damages (including loss of profits, loss of data, or loss of goodwill).

The Company's total liability will not exceed the amount you actually paid to the Company in the 12 months immediately preceding the event giving rise to the claim.

Some countries or states do not allow the above limitations, in which case they apply only to the extent permitted by law. Liability for death or personal injury is not limited where the law prohibits such exclusion.

16. Governing Law and Dispute Resolution

These Terms are governed by the law of the Republic of Korea.

If a dispute arises, please contact the Company first. If it cannot be resolved amicably, an action may be brought in the court of competent jurisdiction under the Civil Procedure Act of Korea. Consumers may bring an action in the court having jurisdiction over their place of residence.

Nothing in these Terms limits any right guaranteed to consumers under Korean consumer protection laws, including the Framework Act on Consumers and the Act on the Consumer Protection in Electronic Commerce.

Residents outside Korea: if your country of residence has mandatory consumer protection regulations, those regulations apply first. Residents of the EU and UK retain the protections of the laws and courts of their country of residence.

Dispute Resolution Bodies (Korea)

• Korea Consumer Agency Consumer Counseling Center: 1372
• Electronic Commerce Dispute Mediation Committee (www.ecmc.or.kr)

17. Changes to These Terms

If the Company changes these Terms, it will notify you via in-app notice or email. Material changes will be announced at least 30 days before they take effect. Continued use of the Service after a change constitutes agreement to the change.

18. Contact

support@iaiu.net IAIU (Sole Proprietorship) Business Registration Number 213-08-81338 · Representative Kim Chang-myoung 17 Bundang-ro 201beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, Republic of Korea (Seohyeon-dong) [경기도 성남시 분당구 분당로201번길 17 (서현동)]