[POSTREAM] Terms of Service

(Version 1.5 — 8th revision, effective September 4, 2026)

Article 1 (Purpose)

These Terms set forth the rights, obligations, and responsibilities between Voithru Inc. (the "Company") and users in connection with the use of "POSTREAM" (the "Service").

The Company's business information (trade name, representative, address, business registration number, etc.) is posted at the bottom of the initial service screen and has the same effect as these Terms.

Article 2 (Definitions)

1. "Service" means the SaaS that supports automatically converting and publishing videos uploaded by users to external social media platforms.
2. "User" means a person who agrees to these Terms and uses the Service, including individuals aged 14 or older and businesses (including corporations).
3. "Member" means a person who has registered with the Service per the Company's procedures and may continuously use the Service.
4. "Automatic Upload" means the per-platform publishing/automation configuration unit set by the user.
5. "User Content" means videos and related data uploaded by the user to, or processed through, the Service.
6. "Connected Platform" means an external social media platform (YouTube, Instagram, TikTok, etc.) to which the user connects their account to import or publish content.
7. "Quick Upload" means the feature by which a user directly uploads a local file to the Service—independently of any Automatic Upload—for publishing to a Connected Platform.
8. "Free trial" means the free usage period provided once per account immediately after registration.
9. "Upload-Suspended State" means the state in which an account remains where there is no valid paid subscription and the Free trial has ended, and in which activation of Automatic Uploads and video uploads are restricted.
10. "Discount Repayment" means the amount repaid, corresponding to the annual discount already received, by a user paying the annual fee in twelve monthly charges (Article 7(3)) who ceases to maintain annual billing during the commitment period.

Article 3 (Posting and Amendment of Terms)

1. The Company posts these Terms on the service screen (bottom). The content may be made viewable via a linked screen.
2. The Company may amend these Terms within the scope that does not violate applicable laws, and announces amendments within the Service at least 7 days before the effective date (30 days for changes unfavorable to users or material changes).
3. If a User does not express intent to "withdraw" or "refuse" by the effective date of the amendment, the User is deemed to have agreed to the amended Terms.

Article 4 (Service Contents)

1. The main contents of the Service are as follows:
   1. Original video upload and storage
   2. Platform-specific resolution/length/size conversion
   3. Publishing, scheduling, and status monitoring via external platform APIs
   4. Publishing history and basic statistics
2. Any change to the service contents or delivery method will be announced in advance per Article 3.

Article 5 (Suspension of Service)

1. The Company may temporarily suspend the Service in the following cases:
   1. Facility maintenance/inspection/replacement/failure or communication interruption
   2. Force majeure such as natural disaster or power outage
   3. External platform API policy change or suspension
2. The Company will announce without delay any suspension under paragraph 1.

Article 6 (Membership Registration and Withdrawal)

1. Registration is made by an individual aged 14 or older or a business, after authentication and per the Company's procedures.
2. The Company may refuse registration or cancel subsequent approval in cases such as:
   1. use of another person's name or entry of false information
   2. an anticipated technical impediment
   3. failure to meet the usage requirements set by the Company
3. A Member may request withdrawal at any time, and the Company processes it immediately.

Article 7 (Fees and Subscription)

1. The Service is offered in paid plans (Lite, Starter, Pro). Users are provided the Free trial under paragraph 8 immediately after registration. No free plan is offered.
   • Lite: 1 Automatic Upload, 5 uploads/month (monthly billing only)
   • Starter: 2 Automatic Uploads, 30 uploads/month
   • Pro: 4 Automatic Uploads, unlimited uploads
   • ※ The fee for each plan is posted on the service screen; the amount to be charged and the billing date are shown on the payment screen before payment.
   • ※ The scope of features differs by plan; see the service screen for details.
2. When using a paid plan, the user agrees to the following, with separate explicit consent on the payment page:
   • Auto-renewal: paid plans auto-renew on the billing date and are charged monthly (or yearly) unless the user cancels.
   • Commitment for Annual Monthly Installments: choosing Annual Monthly Installments creates a 12-month commitment. If annual billing is not maintained during the commitment period, a Discount Repayment is charged under Article 8(6).
   • Automatic plan-version transition: upon release of a new plan version, the account transitions to the latest version on the next renewal; the Company gives prior notice 30 days and 7 days before renewal. However, Annual Monthly Installments do not transition versions during the commitment period; the latest version applies at the renewal of the commitment.
3. Billing cycle and renewal:
   • Monthly: auto-renews monthly from the signup date (month-end signup renews on the last day of the following month).
   • Annual: a 15% discount off the monthly list price applies, and the user chooses one of the following two payment options. Both have the same total amount and the same discount rate.
     • Annual Payment in Full: the entire annual fee is charged once, and the plan auto-renews yearly from the signup date.
     • Annual Monthly Installments: the annual fee is divided into twelve monthly charges, subject to a 12-month commitment. The first installment is charged on the payment date and each subsequent installment on the same day of each month (on the last day of the month where that day does not exist).
   • After twelve months, an annual plan auto-renews with the payment option originally chosen, and switching between Payment in Full and Monthly Installments is not offered during the subscription. To change the payment option, the user must cancel and subscribe again; this is disclosed on the purchase screen before payment.
   • The Company gives notice of an annual plan's upcoming renewal and its amount 30 days and 7 days before the renewal date, including where the amount increases.
   • Monthly→Annual Payment in Full switch: applied immediately, prorating the remaining monthly period, then charged the annual amount.
   • Monthly→Annual Monthly Installments switch: applied from the next billing date, and that date becomes the first installment of the commitment.
   • Annual Monthly Installments→Monthly switch: applied from the next scheduled installment date, and the Discount Repayment under Article 8(6) is charged on the same date.
   • Annual Payment in Full→Monthly switch: applied immediately. In that case the existing annual subscription period ends on the switch date and is settled in accordance with Article 8(5); any amount to be refunded is refunded, and any shortfall is charged. The new monthly subscription period begins on the switch date.
4. Plan changes:
   • Upgrade: applied immediately, prorated for the remaining period.
   • Downgrade: applied from the next renewal.
   • Where the user changes plans while maintaining Annual Monthly Installments, the following applies in place of the two items above.
     1. Change to a higher plan: applied immediately. The difference between the two plans' monthly installment amounts, prorated over the days remaining in the current installment period, is charged. From the next installment onward, the new plan's installment amount is charged.
     2. Change to a lower plan: applied from the next scheduled installment date; until then the existing plan continues. There is no separate settlement or refund.
     3. In both cases the 12-month commitment continues unchanged. The date the commitment ends and the number of payments remaining do not change, and because annual billing is being maintained, no Discount Repayment under Article 8(6) is charged.
   • Where the user changes both the plan (Starter·Pro) and the payment option (Monthly, Annual Payment in Full, Annual Monthly Installments) together, the following applies in priority to the items above: the existing subscription period ends on the change date and is settled by applying Article 8(5) mutatis mutandis, after which a new subscription period begins on the changed terms. Any amount to be refunded is refunded, and any shortfall is charged. Where the change is made from Annual Monthly Installments, the portion of the installment already paid for the current period that corresponds to the remaining days is deducted and the Discount Repayment under Article 8(6) is included in the settlement, and any amount payable as a result of that settlement is charged. However, a change between Annual Payment in Full and Annual Monthly Installments is not offered, as provided in paragraph 3.
5. Payment failure is handled as follows:
   • Immediate notification upon failure.
   • A 3-day grace period during which existing plan features are retained.
   • If not paid within 3 days, the account is converted to the Upload-Suspended State under paragraph 9 (with notice); Automatic Uploads and channel connections are retained, but all Automatic Uploads are deactivated.
   • If paid within 3 days, the subscription period is maintained based on the original due date.
   • The same applies to a failed installment charge under Annual Monthly Installments; if payment completes within 3 days, the commitment period and installment sequence do not change.
6. Payments are processed via Toss Payments; payment information is securely managed per the payment provider's policy.
7. The Company may run promotions such as discount codes; the detailed conditions (eligibility, discount rate, validity, etc.) are announced separately on the relevant promotion page. Discount codes apply to monthly billing and Annual Payment in Full, and do not apply to Annual Monthly Installments.
8. Free trial and automatic conversion to paid billing
   1. The Company provides a Free trial free of charge for 14 days from registration; where the user registers a payment method during the Free trial, the period becomes 28 days. The only benefit of registering a payment method is the extension of the period; no discount or additional feature is provided.
   2. The Free trial is provided only once per account and is not provided again even if the user withdraws and registers again.
   3. During the Free trial the user may use features equivalent to the Starter plan. The upload limit is 30 uploads for the entire Free trial period and is not reset on a calendar-month basis.
   4. Upon expiry of the Free trial, an account for which a payment method has been registered is automatically converted to the Starter plan on monthly billing and the fee is charged to the registered payment method. An account without a registered payment method enters the Upload-Suspended State under paragraph 9.
   5. For the automatic conversion under item 4, the Company displays on the payment-method registration screen (i) the amount to be charged upon conversion, (ii) the first billing date, and (iii) how to stop the automatic conversion before expiry, and obtains the user’s explicit consent; the Company records and retains the time of consent, the amount displayed, and the version of the terms consented to. Without such consent, no automatic conversion occurs.
   6. The Company gives individual notice by email 7 days and 3 days before the Free trial expires, stating the upcoming expiry and whether automatic conversion will occur.
   7. The user may stop the automatic conversion at any time during the Free trial by deleting the payment method or disabling automatic conversion, in which case the account enters the Upload-Suspended State under paragraph 9 upon expiry.
9. Upload-Suspended State
   1. The Upload-Suspended State begins for any of the following reasons:
      1. expiry of the Free trial for an account without a registered payment method;
      2. the end of the grace period under Addendum paragraph 2;
      3. a termination under Article 9 taking effect;
      4. the lapse of 3 days after a payment failure under paragraph 5;
      5. the Company terminating the subscription together with a full refund.
   2. In the Upload-Suspended State all registered Automatic Uploads are deactivated and none may be activated until a paid plan is purchased; publishing via automatic, instant and quick upload is restricted in all cases; and pending scheduled executions are cancelled. Cancelled scheduled executions are not executed retroactively even after a subsequent purchase.
   3. Channel and account connections are retained and are not released.
   4. The Upload-Suspended State is lifted upon purchase of a paid plan, at which point a new subscription period begins. Reservations or commitments of the previous subscription are not carried over.

Article 8 (Withdrawal of Subscription, Refund, and Discount Repayment)

1. The user may request withdrawal within 7 days of the first paid-plan payment (or the annual renewal date). For Annual Monthly Installments, the first installment date is the reference date; where the subscription began by automatic conversion from the Free trial under Article 7(8)(4), the date of the first charge upon that conversion is the reference date.
2. However, withdrawal is restricted where:
   • at least one video has been successfully uploaded using the Service after converting to a paid plan. In that case the Service is deemed to have been provided. Failed uploads, the sample publication provided during the tutorial, and uploads made during the Free trial (including the grace period under Addendum paragraph 2) are not counted.
   • the withdrawal right may be restricted where digital content has been provided (Act on Consumer Protection in Electronic Commerce, Art. 17(2)(5))
   • Where this restriction does not apply, the user may receive a full refund within 7 days of payment.
3. Refunds are processed to the payment method within 7 business days of approval.
4. For monthly billing, no pro-rated refund for partial use is provided.
5. For Annual Payment in Full, refunds on mid-term cancellation are handled as follows:
   • A full refund is made where withdrawal under paragraphs 1 and 2 applies.
   • Otherwise, the refund is calculated as "the amount actually paid, less the plan's monthly list price for the number of months used"; if the result is zero or less, no refund is made. Where the plan changed during the annual period, the monthly list price of each segment is applied to the months used in that segment and the amounts are aggregated.
   • The number of months used counts one month up to the corresponding day of each month from the payment date; exceeding that day by even one day counts as an additional month. Where a month has no corresponding day, the last day of that month applies.
   • Even within 7 days of payment, if a video has been successfully uploaded, the calculation above applies and at least one month is deducted.
6. For Annual Monthly Installments, refunds and the Discount Repayment are handled as follows:
   • Installments already paid correspond to the periods used and are not refundable. However, where withdrawal under paragraphs 1 and 2 applies, the first installment is refunded in full, the commitment ends, and no Discount Repayment is charged.
   • Where the user cancels the paid plan or switches to monthly billing during the commitment period and thereby ceases to maintain annual billing, the Company charges the annual discount already provided as a Discount Repayment. The amount is calculated as "the sum of, for each installment paid, the plan's monthly list price less the amount actually paid for that installment," and where the plan changed during the commitment period, it is calculated per installment and aggregated. For this purpose, the amount actually paid includes any amount covered by the settlement of the immediately preceding subscription.
   • The Discount Repayment is charged only within the amount of the discount the user has already received, and the same applies where only part of the commitment period was used. The Company does not separately charge any penalty or damages for the remaining commitment period.
   • The Discount Repayment is charged once to the payment method registered by the user when the cancellation or switch to monthly billing takes effect, and the installment for that same period is not charged. The Company discloses the amount and the scheduled charge date immediately upon receiving the cancellation or switch request.
   • No Discount Repayment is charged in the following cases:
     1. the user cancels after completing all twelve installments
     2. the subscription ends without fault on the user's part, such as conversion to the Upload-Suspended State following payment failure (including where the Company terminates the subscription while issuing a refund for compensation or correction)
     3. the user changes only between Starter and Pro while maintaining annual billing
     4. the user changes both the plan and the payment option under Article 7(4) and no amount remains payable as a result of the settlement
   • If a Discount Repayment charge fails, the Company retries for 3 days; if it still fails, the amount is closed out and not retained as a receivable. Cancellation takes effect regardless of whether the Discount Repayment is successfully charged.
   • The commitment under this paragraph does not exclude or restrict the user's right of withdrawal under Article 35 of the Act on Consumer Protection in Electronic Commerce.
7. Exceptionally, a refund may be allowed for a technical error caused by the Company's intent or gross negligence.

Article 9 (Termination)

1. The user may request termination of a paid plan at any time; upon request, the account converts to the Upload-Suspended State under Article 7(9) on the next billing date. For Annual Monthly Installments, the conversion occurs on the next scheduled installment date, and the user may withdraw the termination request before it takes effect. If withdrawn, no Discount Repayment is charged and the installments continue as normal. Where the user requests a plan change while a termination is scheduled, the change request supersedes the scheduled termination: the scheduled termination is cancelled and the subscription continues. The Company displays this separately at the plan-change confirmation step and obtains the user's consent.
2. Upon termination:
   • all existing Automatic Uploads are deactivated (none may be activated until a paid plan is purchased again)
   • channel connections are retained and are not released (upon repurchase, the user may resume without re-connecting)
   • publishing via automatic, instant and quick upload is restricted in all cases, and pending scheduled executions are cancelled
3. The Company sends notifications 7 days and 3 days before, and on the day of, the scheduled termination. Where a user on Annual Monthly Installments requests termination or a switch to monthly billing, the Company separately and immediately discloses the Discount Repayment amount and its scheduled charge date; this disclosure does not become a step that obstructs completion of the termination.

Article 10 (Company's Obligations)

1. The Company does not engage in acts prohibited by applicable laws or these Terms, or contrary to public order and morals, and endeavors to provide the Service stably and continuously.
2. The Company takes reasonable protective measures, such as encryption and access control, to protect users' personal data.

Article 11 (User's Obligations)

The user must not do any of the following:

1. upload illegal, obscene, violent, or racist content
2. make abnormal calls that violate external platform API policies or exceed quota
3. infringe others' rights, such as copyright or portrait rights
4. decompile or reverse-engineer the service source code, or attempt system hacking/intrusion
5. engage in other acts contrary to applicable laws and public order and morals

Article 12 (Copyright)

1. The copyright of original content uploaded to the Service and derivative content generated using the Service (the "Content") belongs to the user.
2. The user grants the Company a royalty-free license to reproduce, modify, transmit, and distribute the Content for service operation and external-platform publishing/preview.

Article 13 (Third-Party Platform Connection and Publishing on the User's Behalf)

1. The user may connect Connected Platform accounts such as Instagram, TikTok, and YouTube, and expressly consents to the Company publishing content to the user's own account/channel on their behalf.
2. By using the Service, the user agrees to be bound by the YouTube Terms of Service (https://www.youtube.com/t/terms).
3. Where the user uses the YouTube connection, this includes granting the requested OAuth scopes (e.g., youtube.upload). Per the certification notice shown on the upload screen, the user certifies that uploaded content complies with the YouTube Terms of Service and Community Guidelines, and publishing occurs only to the user's own channel.
4. The user is responsible for compliance with each Connected Platform's policies and community guidelines.

Article 14 (User Content)

1. The user may use the Quick Upload feature.
2. The user warrants that they lawfully hold the copyright and publishing rights to the User Content they upload, and bears all legal responsibility arising from such content.
3. As a specific implementation of the license granted under Article 12, the Company may host, cache, store, and delete User Content, and make technical copies necessary to provide the Service (publishing to Connected Platforms, preview, reprocessing, etc.), to the extent necessary. This paragraph does not expand the scope of the license under Article 12.
4. Original files registered via Quick Upload are destroyed within 24 hours after publishing to the Connected Platform completes, and may be deleted earlier upon the user's deletion request, account withdrawal, or as required by applicable law or these Terms.

Article 15 (Content Reporting and Response)

1. Anyone may report copyright infringement (including DMCA), obscene or youth-harmful material, defamation or portrait-right infringement, and other unlawful content; reports are received via the customer support channel and email.
2. The Service is a distribution service that publishes the user's content to the user's own account/channel on Connected Platforms; accordingly, the Company has no authority to directly unpublish or delete content once it has been published to a Connected Platform. The Company commences an initial review within 24 hours (on a business-day basis) of receiving a report and notifies the poster of the outcome; the poster is responsible for responding to the content (including editing or removing it on the Connected Platform).
3. The Company may take necessary measures within its own service (such as deleting Quick Upload originals or publishing history that it retains, or restricting use of a Automatic Upload or account) and may, where necessary, forward the report to the relevant Connected Platform.
4. If the poster objects to the Company's review result or measures, they may request an explanation and re-review.

Article 16 (Limitation of Liability)

1. The Company is not liable for damages arising from causes beyond its reasonable control, such as natural disasters, IDC failures, or external platform API policy changes.
2. However, this Article does not apply where damage arises from the Company's intent or gross negligence.

Article 17 (Dispute Resolution and Jurisdiction)

1. The Company and the user shall consult in good faith to amicably resolve any dispute arising in connection with the use of the Service.
2. Failing agreement, the laws of the Republic of Korea govern, and the Seoul Central District Court has exclusive jurisdiction.

Addendum

(Version 1.5 — 8th revision, effective September 4, 2026)

1. These Terms take effect on September 4, 2026.
2. For users who were on the free plan (Free) as of the effective date, the scope of use under Article 7(8)(3) applies for 30 days from the effective date under item 1, after which the account is converted to the Upload-Suspended State under Article 7(9). During that period the Company gives individual notice by email twice — 30 days and 7 days before the end of the grace period — of the discontinuation of the free plan, the grace period and its end date, the restrictions that follow, and how to purchase a paid plan.
3. Users under item 2 are not offered advance registration of a payment method; accordingly, no automatic conversion or charge under Article 7(8)(4) arises for them.
4. The fees of users on a paid plan as of the effective date are not changed by this amendment, and any plan-version transition applies only after the prior notice 30 days and 7 days before the renewal date under Article 7(2).
5. Article 8(5) (removal of the mid-term cancellation fee and of the extinguishment of refunds after 8 months of use) applies equally to users who paid for an annual plan in full before these Terms took effect.
6. The provisions of Article 7(3) on switching from Annual Payment in Full to Monthly, and of Article 7(4) on changing the plan and the payment option together, apply from the day the corresponding feature is made available in the Service, and the Company will announce that date in advance on the service screen. Until then, such switches take effect on the next renewal.