Effective date: October 24, 2026KO

StudyGround Terms of Service

The document below is the full Terms of Service in force from the StudyGround 3.0 launch on October 24, 2026.

Agreements made before that date are governed by the previous Terms of Service (effective May 12, 2026).

StudyGround Terms of Service

Chapter 1. General Provisions

Article 1 (Purpose)

These Terms of Service set forth the rights, obligations, responsibilities, and other necessary matters between Starcube Project Co., Ltd. (the "Company") and users in connection with the use of the StudyGround service (the "Service") provided by the Company. These Terms apply, to the extent consistent with their nature, to services provided through electronic means such as PCs, smartphones, tablets, and similar devices.

Article 2 (Definitions)

For the purposes of these Terms, the following terms have the meanings below.

  1. "Service" means the Company's online learning services for exam preparation, including TOEFL, IELTS, and Duolingo, AI scoring services, New Practice Zone ("NPZ"), Click and Learn, and all related or ancillary services.
  2. "Member" means a person who has entered into a service-use agreement with the Company under these Terms and uses the Service.
  3. "Non-member" means a person who uses all or part of the Service without completing membership registration.
  4. "Free Member" means a member who has completed membership registration but has not purchased any paid service.
  5. "Paid Member" means a member who has purchased a paid service designated by the Company and uses the Service within the scope of that purchased service.
  6. "Paid Service" means paid content or features such as mock tests, practice questions, AI scoring, NPZ content and tools, Click and Learn, and similar digital content or functions made available for consideration.
  7. "Lite" means a short-term paid plan that is valid for 7 days from the time payment is completed and allows access only to the range of mock tests designated by the Company.
  8. "Essential" means a paid plan that is valid for 30 days from the time payment is completed.
  9. "Standard" means a paid plan that is valid for 90 days from the time payment is completed.
  10. "Pro" means a paid plan that is valid for 180 days from the time payment is completed.
  11. "Base Plan" means Lite, Essential, Standard, or Pro.
  12. "Click and Learn" or "CL" means an add-on digital-content service through which the Company streams explanatory videos and related learning content for mock-test review, sold separately for every base plan, including Pro.
  13. "Click and Learn Package" means an add-on product that unlocks the Click and Learn explanations for every mock test included in the member's base plan, bought either together with the base plan or while the base plan is active.
  14. "Bundle Plan" means a purchase of a base plan together with a Click and Learn Package, such as Lite+CL, Essential+CL, Standard+CL, or Pro+CL.
  15. "Click and Learn Single-Test Voucher" ("Voucher") means an add-on product that unlocks the Click and Learn explanations for one mock test chosen by the member; it is sold per voucher (one mock test each) and activated on the review page of a mock test included in the member's current base plan.
  16. "NPZ" means New Practice Zone and includes practice questions, learning content, interactive learning tools, and ancillary functions separately provided by the Company.
  17. "Post" means any text, answer, audio, image, video, file, link, comment, or other information that a member creates, uploads, registers, submits, or transmits through the Service.
  18. "Data" means all information generated or entered during use of the Service, including learning history, problem-solving results, answers, AI scoring results, and usage records.
  19. "Access Period" means the period during which a member may use the purchased paid service.
  20. "Paid-Service Usage History" means a record that the member actually opened, executed, streamed, watched, submitted, scored, or downloaded content or functions available only to paid members.
  21. "Withdrawal" means termination of the service-use agreement between the member and the Company.

Article 3 (Posting and Amendment of the Terms)

  1. The Company shall post these Terms on the initial service screen or a linked screen so that members can easily review them.
  2. The Company may amend these Terms to the extent not prohibited by applicable laws and regulations.
  3. If the Company amends these Terms, it shall announce the amended content, reason for amendment, and effective date together with the current Terms at least 7 days before the effective date. If the amendment is unfavorable to members or concerns a material matter, the Company shall provide at least 30 days' prior notice and may additionally provide individual notice by registered email or other electronic means.
  4. If the Company clearly announces or notifies members that failure to express an objection by the effective date will be deemed acceptance of the amended Terms, and the member does not expressly object, the member shall be deemed to have agreed to the amended Terms.
  5. If a member does not agree to the amended Terms, the member may terminate the service-use agreement.

Article 4 (Rules Outside These Terms)

Any matters not expressly set forth in these Terms shall be governed by applicable laws and regulations, including the Act on the Consumer Protection in Electronic Commerce, the Regulation of Terms and Conditions Act, the Personal Information Protection Act, the Content Industry Promotion Act, and any operating policies, refund policies, or privacy policies separately established by the Company.

Article 5 (Notices to Members)

  1. When the Company gives notice to a member, it may do so by email provided during signup, an in-service notification, a homepage notice, a pop-up, or any other electronic means.
  2. For notices to a large and unspecified number of members, the Company may substitute individual notice by posting the matter on the service notice board for at least 7 days. However, if the matter materially affects members' transactions or rights and obligations, the Company shall provide individual notice.

Article 5-2 (Receipt of Advertising Information)

  1. Only where the member has separately consented, the Company may send advertising information about events, promotions, or new services by email, text message, push notification, or similar means.
  2. Advertising information shall include an "(Advertisement)" mark, sender information, and a method for opting out, as required by applicable law.
  3. A member may withdraw consent to receive advertising information at any time after granting consent, and the Company shall promptly stop sending such advertising information upon receiving an opt-out request.
  4. Consent to receive advertising information is separate from the service-use agreement, and refusal to consent shall not restrict use of the Service.

Chapter 2. Membership Registration

Article 6 (Membership Registration)

  1. A user applies for membership by completing the registration form designated by the Company and agreeing to these Terms.
  2. Membership registration may be completed through methods provided by the Company, including email verification and social login.
  3. The Company may refuse approval of a membership application, or terminate the agreement after approval, if any of the following applies:
    1. The applicant used another person's information without authorization.
    2. The applicant entered false information or omitted information requested by the Company.
    3. The applicant is under 14 years of age and did not obtain the consent of a legal representative.
    4. The applicant has a record of loss of membership status imposed by the Company within the last 2 years.
    5. The applicant applied for a purpose that violates laws or these Terms.
    6. The Company reasonably determines that approval is inappropriate.
  4. Members must provide accurate and current information, and any disadvantage arising from failure to do so shall be borne by the member.

Article 7 (Changes to Member Information)

  1. Members may review or correct their information at any time through the account-management screen or by a method designated by the Company. However, certain information designated by the Company may not be changeable.
  2. If any information entered at signup changes, the member shall promptly update it or notify the Company.
  3. The Company shall not be liable for damages arising from a member's failure to fulfill the obligations in the preceding paragraph unless caused by the Company's intent or gross negligence.

Chapter 3. Service Provision and Use

Article 8 (Provision of the Service)

  1. The Company provides the following services:
    1. Mock tests and practice questions for exam preparation
    2. AI scoring and feedback services
    3. NPZ content and learning tools
    4. Click and Learn explanatory content
    5. Other services newly developed by the Company or provided through partnerships
  2. The detailed scope of a paid service, the amount of content available, the range of functions, and any usage restrictions are governed by these Terms, the payment screen, the product detail page, and in-service notices.
  3. The Company may add, change, or discontinue all or part of the Service where operational or technical needs arise. If a change is unfavorable to paid members, the Company shall provide prior notice or notification in accordance with applicable law and these Terms.

Article 9 (Service Hours)

  1. In principle, the Service is provided 24 hours a day, 7 days a week, unless special circumstances exist.
  2. The Company may temporarily suspend all or part of the Service as needed for system inspection, expansion, replacement, failure response, network interruption, or other operational reasons.
  3. If regular maintenance hours are necessary, the Company shall announce them in advance on the service screen or notice board. In unavoidable cases such as emergency failure recovery, notice may be given after the fact.

Article 10 (Changes to and Suspension of the Service)

  1. The Company may change the content, structure, functions, user interface, supported devices, or operating policies of the Service.
  2. All or part of a free service may be modified, suspended, or discontinued according to Company policy, and the Company shall not provide separate compensation except where required by law.
  3. If a paid service is discontinued or its provision becomes substantially impossible, the Company shall determine whether to provide a refund or compensation in accordance with applicable law and these Terms.

Article 11 (Simultaneous Access and Limits on Account Use)

  1. A member must use one account only for that member's own use and may not transfer, lend, or share the account with another person.
  2. If abnormal simultaneous logins, account sharing, use of automation tools, or bypass access are suspected, the Company may take measures such as login restrictions, additional verification, or suspension of use.

Chapter 4. Paid Services and Payment

Article 12 (Types and Scope of Paid Services)

  1. The paid service plans provided by the Company are as follows. Prices below are in US dollars (USD) as shown on the payment screen for international payments; Korean won (KRW) prices are stated in the Korean version of these Terms.
    1. Lite
      • Access period: 7 days from the time payment is completed
      • Sale price: USD 15
      • Reference list price: USD 28
      • Scope: Access to 5 mock tests designated by the Company (including the free mock test), no Practice Zone exercise content, and no NPZ tools
    2. Essential
      • Access period: 30 days from the time payment is completed
      • Sale price: USD 33
      • Reference list price: USD 73
      • Scope: Unlimited attempts and scoring for 12 mock tests designated by the Company, access to 1/3 of Practice Zone content, and limited access to NPZ tools designated by the Company
    3. Standard
      • Access period: 90 days from the time payment is completed
      • Sale price: USD 74
      • Reference list price: USD 220
      • Scope: All Essential benefits, access to 2/3 of Practice Zone content, and full access to NPZ tools designated by the Company
    4. Pro
      • Access period: 180 days from the time payment is completed
      • Sale price: USD 132
      • Reference list price: USD 440
      • Scope: All Standard benefits and access to all 20 mock tests provided by the Company. Click and Learn is not included.
    5. Click and Learn Package
      • Composition: Click and Learn explanations for every mock test included in the member's base plan
      • Sale price (equal to the reference list price): Lite package USD 25 (5 mock tests), Essential/Standard package USD 50 (12 mock tests), Pro package USD 75 (20 mock tests)
      • Bundle sale price: Lite+CL USD 40, Essential+CL USD 83, Standard+CL USD 124, Pro+CL USD 207
      • Bundle reference list price: Lite+CL USD 53, Essential+CL USD 123, Standard+CL USD 270, Pro+CL USD 515
    6. Click and Learn Single-Test Voucher
      • Composition: Click and Learn explanations for one mock test chosen by the member
      • Sale price: USD 7 per voucher (the same unit price regardless of quantity; up to 20 vouchers per payment and 20 held at a time, with the purchasable quantity shown on the payment screen)
      • Validity: 1 year from the purchase date (activation scope and viewing period are governed by Article 14)
  2. Click and Learn is sold separately for every base plan, including Pro, and is not included in any base plan without an additional charge.
  3. Click and Learn is provided as a streaming service, and downloading or permanent possession is not permitted unless separately allowed by the Company.
  4. The detailed scope of each plan, supported exam types, mock-test sets, number of practice questions, scope of NPZ content, and categories of learning tools are governed by the product detail page and in-service notices.
  5. The Company may change the names, prices, or scope of paid plans that are on sale, and shall provide notice of such changes in accordance with applicable law and these Terms.
  6. Discount coupons issued by the Company apply only to base-plan purchases (including bundle plans) and cannot be used for vouchers or for a Click and Learn Package bought on its own.

Article 13 (Payment and Formation of Contract)

  1. Members may purchase a paid service through one of the payment methods provided on the payment screen.
  2. The paid-service agreement is formed when the Company accepts the member's request for payment and the payment is completed successfully.
  3. The Company may reject a payment request or cancel it after the fact if any of the following applies:
    1. Another person's payment method was used without authorization.
    2. The payment information is false or inaccurate.
    3. Fraudulent payment, abnormal transaction, system error, or settlement issue is identified.
    4. There is another serious reason relating to legal violation or service operation.

Article 14 (Access Period and Expiration)

  1. The access period for a paid service begins at the time payment is completed and, unless otherwise indicated, is calculated based on Korea Standard Time (KST).
  2. Lite is valid for 7 days, Essential for 30 days, Standard for 90 days, and Pro for 180 days.
  3. Click and Learn (a package or an activated voucher) can be used while the base plan is active and, after the base plan's membership ends by expiry (not where it was refunded or cancelled), can still be viewed for the following period set by the base plan (the "post-membership viewing period"): Lite 2 weeks, Essential/Standard 1 month, Pro 2 months. During the post-membership viewing period no paid-service benefit other than viewing Click and Learn explanations is provided.
  4. If a Click and Learn Package is bought while a base plan is active, the package sale price in Article 12 applies regardless of the remaining days, and its access period follows the preceding paragraph.
  5. If the member extends or upgrades the base plan (upgrades are prorated for the remaining period), the Click and Learn access period follows the changed base plan. If the base plan and the Click and Learn Package are upgraded together, only the difference in package sale price is charged; if only the base plan is upgraded, Click and Learn remains limited to the mock tests included in the previous base plan.
  6. A voucher is valid for 1 year from the purchase date and can be activated only for a mock test included in the member's current base plan. The explanations for the activated mock test can be viewed for the period set in paragraph 3, and a voucher not activated within its validity period lapses.
  7. When the access period ends, the member's right to access the paid service automatically expires, and no automatic renewal or automatic extension occurs unless separately agreed.

Article 15 (Transition of Existing Paid Members Upon Service Reorganization)

  1. This Article applies to paid plans in use when these Terms take effect, until those plans expire.
  2. A Pro plan in use on the effective date keeps access to all 20 mock tests provided by the Company until it expires, and the Click and Learn that was included in Pro at the time of purchase remains available until the plan expires.
  3. An Essential or Standard plan in use on the effective date keeps access, until it expires, to the 12 mock tests included in the revised Essential/Standard plans plus mock test NT-014, and any Click and Learn already bought remains available until the plan expires. A Click and Learn Package or voucher bought for such a plan after the effective date is likewise available until that plan expires; the post-membership viewing period of Article 14(3) does not apply in that case.
  4. The original access period of such transition members is not extended, and the revised prices and plan contents apply to plans bought on or after the effective date.
  5. Old-version products sold before the effective date shall be handled according to the terms, product descriptions, or separate notices applicable at the time of purchase.

Article 16 (Payment Errors, Delinquency, and Restrictions on Use)

  1. If payment is not approved, later canceled, reversed, charged back, rejected, or found to involve a settlement mismatch, the Company may withhold provision of the relevant paid service or restrict use of it.
  2. If the member is found not to have properly paid the paid-service fee, the Company may suspend or recover access rights.
  3. Where necessary, the Company may request payment records, identity-verification materials, or explanatory materials from the member.

Chapter 5. Withdrawal and Refund

Article 17 (General Rules on Withdrawal and Refund)

  1. The Company shall handle requests for withdrawal and refund in accordance with applicable law and these Terms.
  2. A member who wants a refund must request the refund before completing account withdrawal, and once account withdrawal is completed, refunds may be limited except where allowed by law or exceptionally approved by the Company.
  3. If a refund is approved, the Company shall in principle refund through the same payment method originally used. If that is not possible, the Company may refund by another appropriate method after consultation with the member.
  4. The Company shall begin refund processing within 3 business days from the date the refund is approved or the legal basis for refund becomes final. However, the actual completion time may vary depending on the payment processor or financial institution.
  5. If the delivered service differs from the displayed advertisement or the contractual content, the member may request withdrawal or refund within 30 days from the day the member became aware of the issue or could have become aware of it, and within 3 months from the day of supply.

Article 18 (Refund Standards by Paid Service)

  1. A member may request a refund within 7 days from the purchase date or the date digital content supply began, and if there is no paid-service usage history at all, the member may receive a full refund.
  2. If member-only digital content, mock tests, paid NPZ functions, AI scoring, or Click and Learn has already been provided, withdrawal may be restricted in accordance with applicable law and these Terms.
  3. For member convenience, the Company may additionally operate the following internal refund standards:
    1. Within 7 days of purchase and with no paid-service usage history: full refund
    2. From day 8 through day 14 after purchase: partial refund under Article 19
    3. After day 15: refund unavailable, except where legal withdrawal rights apply or the Company is at fault
  4. A bundle plan is treated as one independent product, and if use of either the base plan or Click and Learn has started, the bundle plan is deemed to have paid-service usage history. A Click and Learn Package bought while a base plan is active is treated as a separate product to which this Article and Article 19 apply.
  5. A voucher can be refunded only within 7 days of purchase and only if it has not been activated. An activated voucher is deemed digital content whose supply has begun and is not refunded; the daily proration of Article 19 does not apply to vouchers.

Article 19 (Paid-Service Usage History and Calculation of Partial Refund)

  1. A member is deemed to have paid-service usage history if any of the following is objectively verified through Company logs. Use of free content available to free members or non-members is excluded.
    1. Opening, viewing, or submitting a mock test, practice item, or NPZ content available only to paid members
    2. Successful completion of an AI scoring or feedback function reserved for paid members
    3. Execution or download of learning tools, materials, or functions reserved for paid members
    4. Playback, streaming, or watching of Click and Learn explanatory videos
  2. The partial refund amount is calculated by the following formula:
    Partial refund = Actual amount paid - Usage deduction - Other deductions permitted by law
  3. For the purposes of the preceding paragraph:
    1. "Actual amount paid" means the amount actually paid by the member.
    2. "Usage deduction" means an amount calculated in proportion to the number of days used, based on the applicable reference list price of the relevant plan.
    3. The reference list price is as follows:
      • Lite: USD 28
      • Essential: USD 73
      • Standard: USD 220
      • Pro: USD 440
      • Lite+CL: USD 53
      • Essential+CL: USD 123
      • Standard+CL: USD 270
      • Pro+CL: USD 515
      • Click and Learn Package (bought on its own): Lite USD 25, Essential/Standard USD 50, Pro USD 75
    4. "Days used" means the period from payment completion to refund request, converted into days, and any fraction of a day counts as one full day.
  4. The usage deduction is calculated as follows:
    Usage deduction = (Reference list price ÷ Total access days) × Days used
  5. If the result of the calculation is less than USD 0, the refund amount shall be USD 0.
  6. Where legally permitted, the Company may deduct fees such as payment-processing fees, overseas remittance fees, or exchange fees.

Article 20 (Overpayment and Related Matters)

  1. If an overpayment occurs due to a reason attributable to the Company, the Company shall refund the full amount by the original payment method. If that is impossible, the Company may use another method after prior notice to the member.
  2. If an overpayment occurs due to a reason attributable to the member, the Company may deduct reasonable costs necessary for the refund process.
  3. If the amount paid is less than the actual product price, the Company may request payment of the difference, and if the member does not comply, the Company may restrict provision of the Service.

Chapter 6. Member Obligations and Responsibility

Article 21 (Member Obligations)

Members shall not engage in any of the following acts:

  1. Using another person's information or payment method without authorization
  2. Allowing another person to use or share the member's account
  3. Interfering with operation of the Service or placing excessive load on servers
  4. Copying, publishing, distributing, broadcasting, transmitting, selling, or commercially using service information without prior Company approval
  5. Infringing the copyrights, trademarks, portrait rights, personal information, or other rights of the Company or any third party
  6. Posting or transmitting information contrary to public order or good morals
  7. Engaging in acts related to crime or likely to be related to crime
  8. Posting obscene material, hate expression, violent content, or content likely to cause discomfort to others
  9. Abusing customer-support staff or operators through insults, threats, harassment, or repetitive malicious complaints
  10. Analyzing or altering the Service through reverse engineering, decompilation, or disassembly
  11. Using automation programs, bots, scraping, macros, or abnormal bypass methods
  12. Otherwise violating applicable law, these Terms, or Company policy

Article 22 (Posts and Intellectual Property)

  1. Copyright in posts created by a member within the Service belongs in principle to that member. However, the member grants the Company a non-exclusive, royalty-free right to use such posts to the extent necessary for service operation, provision, improvement, display, reproduction, transmission, storage, backup, format conversion, thumbnail creation, search-result display, and customer support.
  2. If a member submits answers, reviews, learning materials, or other posts, the Company may anonymize or de-identify them and use them to improve service quality, enhance functions, organize learning materials, or perform internal statistical analysis.
  3. If the Company determines that a post falls under any of the following, it may restrict, hide, or delete the post without prior notice:
    1. The post infringes another person's rights
    2. The post violates applicable law or these Terms
    3. The post interferes with service operation or violates public order or good morals
  4. Even after account withdrawal, posts may be retained to the minimum extent necessary where required by law or needed for service operation.

Article 23 (Use of Data)

  1. Members' learning data may be used, in a manner that protects personal information, for service-quality improvement, model-performance improvement, error analysis, statistics, and operational optimization.
  2. If the Company intends to provide a member's data to a third party or use it for a separate commercial purpose, the Company shall follow any consent procedure required by applicable law.
  3. Members may exercise rights relating to processing of their data in accordance with applicable law and procedures designated by the Company.

Chapter 7. Termination and Restrictions on Use

Article 24 (Termination and Withdrawal)

  1. A member may terminate the service-use agreement at any time through the in-service withdrawal function or another method designated by the Company.
  2. Once withdrawal is completed, the member's right to use paid services is extinguished. However, information subject to statutory retention obligations shall be retained for the required period.
  3. If a member wishes to obtain a refund, the refund process must be completed before the withdrawal request is finalized.

Article 25 (Restrictions on Use)

  1. If a member violates these Terms or applicable law, the Company may take measures such as warning, restriction on certain functions, temporary suspension, permanent suspension, or restriction on re-registration.
  2. When taking the measures in the preceding paragraph, the Company shall notify the member of the reason and period. However, if urgent security action is needed or notice is impossible for reasons not attributable to the Company, notice may be given afterward.
  3. A member may object to a restriction measure in accordance with procedures designated by the Company, and if the Company determines the objection is justified, it shall promptly take appropriate corrective action.
  4. Unless otherwise compensated, the paid-service access period does not stop during a restriction period and is not extended.

Chapter 8. Damages and Miscellaneous

Article 26 (Damages)

  1. If damage occurs due to a reason attributable to the Company or the member, the other party may claim damages in accordance with applicable law.
  2. If a member causes damage to the Company or a third party by violating these Terms, the member is liable to compensate for such damage.

Article 27 (Disclaimer)

  1. The Company shall not be liable where it cannot provide the Service due to force majeure such as natural disaster, war, riot, blackout, telecommunications failure, national emergency, or equivalent circumstances.
  2. The Company shall not be liable for service-use disruption or inconvenience caused by a reason attributable to the member.
  3. The Company shall not be liable for damages arising from use of a free service unless caused by the Company's intent or gross negligence.
  4. The Company does not guarantee the accuracy, reliability, or legality of information posted or transmitted by members.
  5. The Company has no obligation to intervene in disputes between members or between a member and a third party arising through the Service and is not liable unless caused by the Company's intent or gross negligence.

Article 28 (Governing Law and Jurisdiction)

  1. These Terms and disputes between the Company and members shall be governed by the laws of the Republic of Korea.
  2. Any lawsuit relating to disputes arising from use of the Service shall be filed with a court having jurisdiction under the Korean Civil Procedure Act.

Article 29 (Protection of Personal Information)

  1. The Company shall comply with the Personal Information Protection Act and other applicable laws to protect members' personal information.
  2. The Company collects and uses only the minimum personal information necessary to provide the Service.
  3. Details regarding collection, use, retention, destruction, and exercise of rights concerning personal information shall be governed by the separately posted Privacy Policy.
  4. To the extent permitted by applicable law, the Company may place dormant accounts under separate storage, dormancy, or deletion if there has been no service-use activity for a prolonged period.

Supplementary Provisions

Article 1 (Effective Date)

These Terms shall take effect at the launch of StudyGround 3.0 on October 24, 2026 (around 9 PM KST).

Article 2 (Transitional Measures)

  1. Service-use agreements entered into before the effective date of these Terms shall remain governed by the previous terms (effective May 12, 2026) unless otherwise specified. However, if these Terms are more favorable to the member, the Company may apply these Terms instead.
  2. Article 15 shall apply to Pro, Essential, and Standard plans in use as of the effective date of these Terms.
  3. Click and Learn in a bundle plan sold under the previous terms, and Click and Learn included in a Pro plan sold under the previous terms, remain available on the terms applicable at the time of purchase until the associated base plan expires.