Terms of Service

Last Updated: February 15, 2026

1. Acceptance of Terms

These Terms of Service ("Terms") govern the use of the SPRINT Program platform ("Service") operated by Callus Company Inc. ("Company"). Upon registration, users must review and consent to these Terms and the Privacy Policy through the designated consent mechanism (e.g., checkbox selection).

• Required consent: Terms of Service, Privacy Policy
• Optional consent: Marketing communications

2. Description of Service

The Company provides the following two services:

SPRINT Internship

A remote internship matching service for high school students. Participants engage in 4-week immersive work experiences at startups worldwide, under the direct supervision of company founders.

SPRINT Consulting

An AI-powered college admissions consulting service. The platform provides academic analysis, personalized roadmaps, strategy recommendations, and related tools to assist students, parents, and guardians in college admissions preparation. This Service does not constitute a licensed educational institution (학원) or tutoring service under the Act on the Establishment and Operation of Private Teaching Institutes (Republic of Korea), and is an information provision service, not educational guidance.

3. Account

3.1 Registration and Management

Users may register using email, Google, or Kakao authentication. Users are responsible for maintaining the security of their login credentials. The Company shall not be liable for any unauthorized access to, or use of, a user's account resulting from the user's failure to safeguard their credentials; provided, however, that the Company shall be liable for information breaches caused by defects in the Company's security systems.

Each user may create only one account. The transfer, sale, rental, or pledging of accounts is prohibited.

3.2 Use by Minors

Parents or legal guardians may create and manage accounts on behalf of minor children.

• For children under the age of 14, consent of a legal guardian is required in accordance with Article 22 of the Personal Information Protection Act (Republic of Korea).
• For minors aged 14 to 18 who wish to purchase paid services, consent of a legal guardian is required in accordance with Article 5 of the Civil Act (Republic of Korea). Contracts entered into without such consent may be rescinded by the minor or their legal guardian.
• Legal guardians may request access to, correction of, or deletion of a minor's personal information.

4. Payment

All payments are processed through the payment service provider Paddle. Payment terms vary by service as follows:

4.1 SPRINT Internship

• Internship programs require a one-time payment per program.
• Enrollment is confirmed upon completion of payment on the website.
• Each program has limited capacity. Enrollment is confirmed on a first-paid, first-served basis.

4.2 SPRINT Consulting

• Consulting operates on an annual subscription basis. The subscription period is 1 year from the date of payment.
• Subscriptions auto-renew upon expiration. The Company shall notify users of the upcoming renewal date, renewal amount, and cancellation method via email no later than 14 days prior to the renewal date.
• Users who do not wish to renew may cancel through the in-service settings or by contacting customer support (contact@calluscompany.com) prior to the expiration date.
• Upon auto-renewal, the rate in effect on the renewal date shall apply.

4.3 Right of Withdrawal

In accordance with Article 17 of the Act on Consumer Protection in Electronic Commerce (Republic of Korea), users may exercise the right of withdrawal within 7 days from the date of receiving the written confirmation of the contract (e.g., email). If the provision of the service commenced after the date the written confirmation was received, the withdrawal period shall begin from the date the service provision commenced.

• Upon withdrawal, a full refund of the payment amount shall be provided.
• If the user has commenced use of the Service (including but not limited to AI analysis requests, roadmap generation, or content access), the right of withdrawal may be restricted due to the nature of digital content. The Company shall provide sample content to allow users to preview key features prior to payment, and shall separately notify users of this restriction and obtain their consent at the time of payment.

4.4 Cancellation and Refunds

SPRINT Internship

• In the event the Company cancels a program, a full refund shall be provided.

SPRINT Consulting

For cancellation requests made after the withdrawal period or after commencement of Service use, refund amounts are calculated as follows:

Refund = (Payment Amount − Used Period Fee) × 90%

• Used Period Fee: (Payment Amount ÷ 12) × number of months used (rounded up to the month containing the cancellation request date)
• Early termination fee: 10% of the remaining balance

• Upon cancellation, the user may continue to access the Service until the last day of the month in which the cancellation was requested.
• Complimentary periods, promotional benefits, or bonus periods provided at no charge are excluded from the refund calculation.

4.5 Refund Processing

• The Company shall initiate refund processing within 3 business days of receiving the user's cancellation request. Additional processing time may be required depending on the payment method and the payment service provider's procedures.
• Refunds shall be processed through the same payment method used for the original transaction.
• Applicable transaction fees and taxes may be deducted from the refund amount.

4.6 Price Changes

Service fees are subject to change; however, changes shall not affect the current billing cycle or enrolled programs. Users will be notified of price changes at least 30 days prior to the renewal date via email or in-service notice.

5. AI-Generated Content

The Service utilizes AI to generate analytical reports, recommendations, roadmaps, and related content. By using the Service, the user acknowledges and agrees to the following:

• All AI-generated content constitutes informational reference material and does not substitute for professional admissions counseling.
• The Company does not guarantee admission to any specific institution. Admission probability analyses, university recommendations, and similar outputs provided by the AI are statistical reference materials and may differ from actual admissions outcomes. Admissions policies, evaluation criteria, and acceptance thresholds are at the sole discretion of each institution and are beyond the Company's ability to predict or control.
• AI systems may generate information that appears factual but is incorrect (AI hallucination). Users must independently verify all factual information provided by the AI — including institution names, program names, deadlines, and application requirements — through the official websites of the respective institutions.
• The Company makes no warranties regarding the accuracy, completeness, or timeliness of AI-generated content, and shall bear no liability for admissions outcomes (acceptance, rejection, waitlist, etc.) based on AI-generated content.
• Users shall not rely on AI-generated content as the sole basis for decision-making.

6. Intellectual Property

6.1 Platform Intellectual Property

All intellectual property rights pertaining to the SPRINT Program platform — including but not limited to design, source code, algorithms, and brand assets — are the exclusive property of the Company.

6.2 Trade Secrets

The prompts, instructions, system configurations, algorithms, AI model parameters, and training data used in the Company's AI system constitute trade secrets under Article 2, Paragraph 2 of the Unfair Competition Prevention and Trade Secret Protection Act (Republic of Korea). Users shall not disclose to third parties or use for purposes other than the Service any trade secrets of the Company that become known through the use of the Service.

6.3 Rights to AI-Generated Content

AI-generated content (analytical results, roadmaps, strategy recommendations, etc.) may not constitute copyrightable works under copyright law; however, the right to use such content is granted to the respective user for the duration of their service subscription. The system prompts, algorithms, and processing logic used to generate AI content are the Company's trade secrets and intellectual property.

6.4 User Data

Users retain ownership of their personal and academic data. The Company uses such data for the following purposes:

• Providing the Service to the user
• Improving service quality, enhancing AI models, and conducting statistical analysis and scientific research using data that has been anonymized or pseudonymized such that individual users cannot be identified (in accordance with Article 28-2 of the Personal Information Protection Act)
• Verifying service effectiveness and promotional use based on anonymized outcome data (e.g., admissions results)

When processing pseudonymized information, the Company shall implement safety measures in accordance with Article 28-4 of the Personal Information Protection Act. The Company shall not use users' personal information for any purpose beyond those stated above without prior anonymization or pseudonymization. Matters regarding the entrustment of personal information processing and provision to third parties are set forth in the separate Privacy Policy.

7. Prohibited Conduct

Users shall not engage in any of the following:

7.1 General Prohibitions

• Using the Service for any unlawful purpose
• Sharing login credentials with third parties or unauthorized use of another user's account
• Creating accounts using false information or misrepresenting one's identity or affiliation
• Providing or selling AI-generated content to third parties as professional advice
• Disrupting the normal operation of the Service or placing excessive load on servers and networks

7.2 Technical Protection Measures

• Reverse engineering, decompiling, disassembling, or otherwise extracting or analyzing the source code, algorithms, AI models, or prompts of the Service
• Attempting to extract, infer, or reconstruct the internal prompts, system instructions, configurations, or operational logic of the AI system through automated means or repeated, systematic methods, including prompt injection
• Accessing the Service or collecting data through automated means including but not limited to bots, scrapers, or crawlers
• Circumventing or disabling any security measures, access controls, or authentication systems of the Service
• Making unauthorized API calls, or intercepting or monitoring the internal communications of the Service

7.3 Competition and Intellectual Property

• Systematically replicating or imitating the functionality, user flows (UI/UX), interface design, or outputs of the Service for the purpose of developing a competing product (which may constitute a violation under Article 2, Paragraph 1, Item (cha) of the Unfair Competition Prevention Act)
• Systematically collecting or storing AI-generated content (analytical results, roadmaps, recommendations, etc.) to build a database or using such content for competitive purposes
• Systematically collecting or analyzing the functionality, performance, or outputs of the Service for the purpose of developing, improving, or marketing a competing service
• Capturing, recording, or distributing screenshots, recordings, or content from the Service for commercial purposes

The Company may notify users of any violation of this section and request corrective action. If corrective action is not taken, the Company may restrict or terminate the user's account. However, in cases of urgent security threats, violations of Section 7.2, or violations of law, the Company may impose immediate restrictions without prior notice. The Company reserves the right to pursue civil and criminal legal action for damages arising from such violations.

8. Limitation of Liability

Excluding damages caused by the Company's willful misconduct or gross negligence, the Company's liability for damages caused by ordinary negligence shall be limited to the total amount paid by the user to the Company in the 12 months preceding the event giving rise to the claim. The Company shall not be liable for damages arising from extraordinary circumstances that could not ordinarily be foreseen (except where the Company knew or could have known of such circumstances).

The limitation of liability under this section shall not apply in the following cases:

1. Damages caused by the Company's willful misconduct or gross negligence
2. Damages resulting from personal information breaches in violation of the Personal Information Protection Act
3. Damages resulting from injury to life, body, or health

9. Limitation of Warranties

The Service is provided using commercially reasonable technology and resources available to the Company. The Company does not guarantee uninterrupted availability or the complete absence of errors, but shall endeavor to maintain a commercially reasonable level of service quality. The Company shall be liable for service defects caused by its willful misconduct or gross negligence.

10. Indemnification

Users shall be liable for damages incurred by the Company or third parties as a result of the user's willful or negligent violation of these Terms or improper use of the Service. However, where the Company bears contributory fault, the corresponding portion shall be offset.

11. Restriction of Use and Account Termination

11.1 Restriction Procedures

In the event of a violation of these Terms, the Company shall notify the user of the violation via email and request corrective action. If corrective action is not taken, the Company may restrict access to the Service or terminate the user's account. In cases of emergency (hacking, illegal activity, etc.), the Company may provide notice after the restriction has been imposed.

Users may file an objection to any restriction or termination within 14 days of receiving the notice, and the Company shall review the objection and notify the user of the outcome within 7 days.

11.2 Post-Termination Data Handling

Upon account termination, the Company shall destroy the user's personal information within 30 days of the termination date. However, the following information shall be retained in accordance with applicable law:

1. Records relating to contracts or withdrawal of offers: 5 years (Act on Consumer Protection in Electronic Commerce)
2. Records relating to payment and supply of goods/services: 5 years (Act on Consumer Protection in Electronic Commerce)
3. Records relating to consumer complaints or dispute resolution: 3 years (Act on Consumer Protection in Electronic Commerce)

Users may export their AI-generated content and personal data prior to termination; data recovery is not possible after termination. Data that has been fully anonymized is excluded from the scope of destruction. Provisions relating to limitation of liability, dispute resolution, and other surviving clauses shall remain in effect after termination.

12. Service Modification and Interruption

The Company may modify or discontinue all or part of the Service due to operational or technical necessity.

• In the event of service modification or discontinuation, the Company shall notify users of the reason and date of the change at least 30 days in advance via email or in-service notice. In cases of unavoidable circumstances (natural disasters, system failures, etc.), the Company may provide notice after the fact.
• In the event of permanent service termination, users shall be afforded a reasonable period (minimum 30 days) to export their data.
• For scheduled maintenance, the Company shall provide advance notice of the date, time, and estimated duration.

13. Force Majeure

The Company shall not be liable for the inability to provide the Service due to any of the following:

1. Force majeure events including natural disasters, war, terrorism, or epidemics
2. Government orders, regulations, or changes in law
3. Failures or service interruptions by third-party service providers (payment processors, cloud services, AI services, etc.)
4. Service interruptions by telecommunications carriers
5. Service disruptions caused by the user's own actions

14. Governing Law and Dispute Resolution

These Terms shall be governed by the laws of the Republic of Korea. Disputes arising from the use of the Service shall be resolved through mutual consultation. If consultation fails, either party may file a dispute resolution request with the Korea Consumer Agency in accordance with the Framework Act on Consumers. If litigation is necessary, the Seoul Central District Court shall have exclusive jurisdiction.

15. Amendments to Terms

The Company may amend these Terms to the extent permitted by applicable law. In the event of amendments, the Company shall notify users of the effective date and reasons for the change via email or in-service notice at least 7 days prior to the effective date. For amendments that are disadvantageous to users, notice shall be provided at least 30 days prior, and users shall be informed that they may terminate their agreement prior to the effective date if they do not consent to the changes. Failure to express objection by the effective date shall be deemed acceptance of the amended Terms.

16. Contact Information

Callus Company Inc. CEOs: Juno Yu, Ryan Kim Business Registration: 615-86-18887 Mail-Order Business Registration: 2023-성남분당A-1178 Address: Songpa-gu Munjeong-dong 634, Garden Five Life 8F, L-8028, Seoul Email: contact@calluscompany.com Phone: 02 6951 0200