Terms of Service

Last Updated: September 23, 2026
Effective Date: October 23, 2026 for existing users · from sign-up or Membership start for users who sign up or start a Membership on or after September 23, 2026

These Terms of Service (the "Terms") govern your use of all services provided by DaKi (the "Company", "we", "us", or "our"). Please read these Terms carefully before using our services.

By using our services, you agree to these Terms and our Privacy Policy. If you do not agree, please discontinue use of the services.

1. Services

The Company operates the website https://daki.app and related applications (collectively, the "Services"). We currently provide the following individual services. Each service is governed by the common terms herein together with the supplementary terms specific to that service.

Service	Type	Status	Description
YT Notes	Mobile App (iOS / Android) / Web App / Chrome Extension	Active	AI-powered YouTube video summarization service

Sections 2 through 10 below apply commonly to all services. Service-specific supplements are addressed separately in the Supplements.

2. Eligibility

You must be at least 16 years old (EU/EEA), at least 14 years old (Republic of Korea), or at least 13 years old (United States and other regions) to use the Services.
You must have the legal capacity to enter into a binding contract in your jurisdiction.
If you have previously been suspended or terminated by the Company, you may not create a new account.

3. Account

3.1 Account Creation

To use the Services, you must sign in via one of the following social logins: Google · Kakao · Naver · LINE. Information provided at sign-in (email, name, profile picture, etc.) is processed in accordance with our Privacy Policy.

3.2 Account Responsibility

You are responsible for all activities that occur under your account.
If you discover unauthorized use of your account, you must immediately notify us at contact@daki.app.
Using another person's account without authorization or creating an account with false information is prohibited.

3.3 Suspension or Termination of Account

The Company may suspend or terminate your account without prior notice in the following cases:

Material breach of these Terms
Provision of false information
Fraudulent use or abuse
Required by law

4. Prohibited Conduct

You must not engage in the following acts in connection with the Services:

Selling, leasing, lending, transferring, redistributing, or commercially exploiting the Services without authorization
Reverse engineering, decompiling, disassembling, or extracting source code from the Services
Using automated tools (scrapers, bots, crawlers, etc.) to access the Services or collect data
Disrupting normal operation of the Services (flooding, spam, mail bombing, overload generation)
Interfering with other users' enjoyment of the Services
Impersonating others or providing false information
Engaging in fraudulent use through false information, multiple accounts, or automation
Repeatedly creating and deleting accounts to fraudulently obtain free usage allowances (if identified, the Company may restrict free usage or suspend access to the Services)
Exploiting security vulnerabilities of the Services
Any act that violates applicable laws

Consequences of Violation: The Company may take measures including deduction of passes (Rockets) or usage allowance, temporary suspension, permanent account termination, and legal action.

5. Disclaimer of Warranties

The Services are provided "AS IS" and "AS AVAILABLE". To the maximum extent permitted by law, the Company disclaims all express or implied warranties, including but not limited to:

Warranties of merchantability, fitness for a particular purpose, and non-infringement
Warranty that the Services will meet your requirements
Warranty that the Services will be uninterrupted, timely, secure, or error-free

6. Limitation of Liability

To the maximum extent permitted by law:

The Company, its affiliates, officers, employees, agents, licensors, or suppliers shall not be liable for any indirect, incidental, special, consequential, or punitive damages (including loss of profits, loss of data, business loss, or reputational harm) arising from use or inability to use the Services.
The Company's total cumulative liability shall not exceed the amount you have paid to the Company during the three (3) months preceding the event giving rise to the claim.

The above limitations apply regardless of the theory of liability (contract, tort, negligence, etc.) and apply even if the Company has been advised of the possibility of such damages.

Exception: This section does not limit liability for death or bodily injury caused by the Company's intent or gross negligence, or for fraud or fraudulent misrepresentation.

7. Indemnification

You agree to indemnify and hold harmless the Company, its affiliates, officers, employees, and agents from and against all losses, costs, damages, and claims arising from:

Your use or inability to use the Services
Your breach of these Terms
Infringement of third-party rights
Violation of applicable laws (including data protection and consumer protection laws)

This section survives termination of your account. However, it does not apply to losses arising from the Company's unconscionable commercial practices or from fraud, deception, or misrepresentation.

8. Modification and Termination

8.1 Modification of Services

The Company reserves the right to modify, update, suspend, or terminate all or part of the Services. We will provide reasonable advance notice of material changes.

8.2 Termination by User

You may discontinue use of the Services and delete your account at any time. Account deletion can be performed directly through Settings > Account in the app, and your account information and related data will be permanently removed immediately upon deletion.

8.3 Termination by Company

The Company may immediately suspend or terminate the Services without prior notice if you materially breach these Terms. Where termination is without cause, we will provide reasonable advance notice.

8.4 Effect of Termination

Upon termination, your access to the Services will cease.
Your content may be deleted, and the Company shall not be liable for such deletion.
If the Services are permanently discontinued for unavoidable reasons, paid subscribers will receive a pro-rata refund for the remaining period.
Provisions concerning ownership, disclaimers, limitation of liability, and indemnification survive termination.

9. Governing Law & Dispute Resolution

9.1 Governing Law

These Terms shall be construed in accordance with the laws of the Republic of Korea. However, where mandatory consumer protection laws of your place of residence apply, those laws shall prevail.

9.2 Informal Dispute Resolution

In the event of a dispute, the parties shall attempt to resolve the dispute through thirty (30) days of good-faith informal negotiation prior to legal proceedings. Notice of dispute should be sent to contact@daki.app.

9.3 Jurisdiction

Disputes not resolved through informal negotiation shall be subject to the Seoul Central District Court as the court of first instance with exclusive jurisdiction.

9.4 EU/EEA/UK Users

Consumers residing in the EU, EEA, or United Kingdom enjoy protections under their local mandatory consumer protection laws and may resolve disputes in the courts of their place of residence.

10. General Provisions

10.1 Entire Agreement

These Terms together with the Privacy Policy constitute the entire agreement between you and the Company regarding use of the Services and supersede all prior agreements.

10.2 Severability

If any provision of these Terms is held invalid or unenforceable, that provision shall remain in effect to the maximum extent permitted, and the remaining provisions shall not be affected.

10.3 No Waiver

Failure or delay by the Company in exercising or enforcing any right or provision of these Terms shall not be deemed a waiver of such right or provision.

10.4 Assignment

You may not assign your rights or obligations under these Terms without the prior written consent of the Company. The Company may assign or transfer these Terms without your consent.

10.5 Electronic Notices

You consent to receive notices from the Company by electronic means including email and in-service notifications, and such notices shall satisfy any legal requirement that such communication be in writing.

10.6 Changes to Terms

The Company may modify these Terms from time to time. For material changes:

We will post a notice or pop-up within the Services.
We will send notice of changes to your registered email address.
We will update the "Last Updated" date at the top of this page.

For users with existing accounts, changes shall take effect thirty (30) days after notice. If you do not agree to the changes, you must discontinue use of the Services. Continued use after the effective date constitutes acceptance of the modified Terms.

10.7 Language

These Terms may be provided in languages other than Korean. In the event of any discrepancy between language versions, the Korean version shall prevail. Other language versions are provided for the convenience of users only.

Service-Specific Supplements

The following supplements apply only when using the relevant service. Where they conflict with the common Terms, the supplements shall prevail.

YT Notes

Supplement A: YT Notes

A.1 Service Description

YT Notes is a service that summarizes text (such as captions) provided by the user using AI, available as a web app (summary.daki.app), a Chrome Extension, and mobile apps (iOS / Android). The service includes the following features:

Text summarization using various AI models (Gemini, GPT, Claude, DeepSeek, Grok, etc.)
Five or more summary modes plus custom modes
Support for 55 languages
AI follow-up chat, summary history, cross-device synchronization

A.1.1 Data Flow and Role of the Company

The data processing flow of YT Notes is as follows:

User-provided captions: While the user views a YouTube video, the user's browser or client device receives the caption data of that video. The user, of their own volition, transmits the caption text to the Company's servers and requests AI summarization.
AI summarization processing: The Company forwards the text submitted by the user to third-party AI services to generate a summary, which is then returned to the user.
Limited role of the Company: The Company performs only AI text processing (summarization, chat, etc.) at the user's request. The Company does not automatically collect (scrape, crawl) content from YouTube or other third-party platforms.

By using the Services, you confirm that you have the right to access the content for which you request AI summarization and consent to submitting that content to the Company for AI processing.

A.2 AI Disclaimer

A.2.1 Understanding the Nature of AI

You acknowledge and agree that the Services utilize artificial intelligence (AI) systems based on probabilistic models, which may produce errors, inaccuracies, omissions, or misunderstandings.

A.2.2 User Responsibility

With respect to AI-generated outputs ("Summaries", "Output"), you bear the following responsibilities:

To independently review and verify all Output
To exercise personal judgment before relying on any Output
For any decision, action, or omission based on Output

A.2.3 Inherent Limitations of AI

AI systems may have the following limitations:

Factual errors or generation of inaccurate information (hallucination)
Inaccurate interpretation of nuance, cultural context, slang, or emotion
Repetitive or biased outputs
Outdated information (limitations of training data cutoff)

A.2.4 Third-Party AI Services

The Company utilizes third-party AI platforms and models ("AI Services"). You agree that your content may be shared with these third parties. The Company makes no warranty as to the availability, accuracy, security, or operation of third-party AI Services and bears no responsibility for any decision made based on AI Services.

A.3 Fees and Payment

A.3.1 Plans

YT Notes Membership (subscription) — You choose a weekly, monthly, or yearly billing period. All three periods include the same features.
The price shown on the checkout screen applies. The currency and amount may differ by country and by payment channel (App Store, Google Play, or web). (For reference, on the Korean App Store and Google Play: ₩3,900 weekly, ₩9,900 monthly, ₩79,900 yearly.)
Usage limit — A fair-use limit applies to each billing period of the Membership, to prevent bulk or automated use beyond normal personal use. We notify you in the app as you approach the limit; once it is reached, summaries and AI questions are restricted until the next refill date, which is shown in the app.
Rockets (one-time passes) — Passes sold or granted to users who joined before September 2026. Rockets you already hold remain usable, and their validity follows the terms stated when they were granted or purchased.

Prices may change with prior notice, and changed prices apply from the next billing period. If the price of an existing subscription increases, we will notify you in advance and obtain your consent as required by applicable law.

A.3.2 Free Trial

Users starting a monthly or yearly Membership for the first time may be offered a free trial (3 days by default). Whether a trial applies, and its length, is shown on the checkout screen. The weekly Membership has no free trial.
When the trial ends, the price of the selected period is charged automatically. The checkout screen states when the trial converts, the amount, and the payment method; by pressing the purchase button to start the trial, you agree to this.
If you cancel before the trial ends, you will not be charged, and you may keep using the service until the trial ends.
A free trial is offered once per account and payment channel.

A.3.3 Payment Processing

Payments are processed through the following channels:

Platform	Payment Processor	Role
iPhone / iPad app	Apple (App Store)	Payment method processing, taxes, receipts
Android app	Google (Google Play)	Payment method processing, taxes, receipts
Web (daki.app) / Chrome Extension	Paddle.com	Merchant of Record — payment method processing, tax calculation and collection, invoicing

RevenueCat, Inc. is used to verify subscription status for in-app purchases.
The Company does not directly collect or store sensitive payment information such as credit card numbers.
If a payment fails, access to the service may be restricted.

A.3.4 Renewal, Period Changes, and Cancellation

The Membership renews automatically at the end of each billing period unless you cancel.
Cancellation: You can cancel from Settings → "Manage membership" in the app. Memberships purchased in the app are cancelled through the subscription management screen of the App Store or Google Play; memberships purchased on the web are cancelled through Paddle's payment management page. After cancelling, you may keep using the service until the end of the period you have already paid for.
Changing the period: Switching to a longer period takes effect immediately and the new period's price is charged (any remaining time is carried over or credited according to the payment channel's policy). Switching to a shorter period takes effect from the next billing date. During a free trial, the change takes effect when the trial ends. On iPhone and iPad, the App Store determines when the change takes effect.

A.3.5 Taxes

Displayed prices may include, or be subject to additional, value-added tax (VAT), sales tax, or similar taxes under the laws of your region of residence. The payment processor applies the tax rate and display method according to your region.

A.4 Refund Policy

A.4.1 In-App Purchases (App Store / Google Play)

Refunds for Memberships and Rockets purchased in the app are handled by each store under Apple's or Google's refund policy. The Company follows the store's refund decision.

Apple: reportaproblem.apple.com
Google Play: Subscriptions / order history in the Google Play app

A.4.2 Web Purchases (Paddle) — Membership

You may request a refund within 14 days of the payment date, subject to the following conditions:

If you have used the summary service at least once (e.g., generating an AI summary) during the billing period, the service is deemed to have commenced and no refund will be provided.
If you have already used the service, only "cancellation from the next billing period" is available instead of a refund, and you may keep using the service until the end of the period already paid for.
No refunds are provided after 14 days; you can prevent the next renewal by cancelling.
No charge is made during a free trial, so there is no amount to refund for the trial period.

A.4.3 Web Purchases (Paddle) — Rockets

You may request a refund within 14 days of the purchase date, subject to the following conditions:

If even one Rocket from the purchase has been used (e.g., one summary executed), no refund will be provided for the entire purchase.
Full refunds are available only for completely unused Rockets.

A.4.4 Non-Refundable Cases

The account was suspended or terminated due to a violation of these Terms, abuse, or fraudulent use
Purchases made through promotions, discount codes, or special events
A refund has already been issued for the same product

A.4.5 EU/EEA/UK Consumers

Consumers residing in the EU, EEA, or United Kingdom may exercise the right of withdrawal within 14 days of purchase under applicable consumer protection laws. However, where the service has already been fully provided (e.g., Rockets have already been used), the right of withdrawal may be lost with prior consent.

A.4.6 How to Request a Refund

For web (Paddle) purchases, send an email to contact@daki.app; the refund will be processed via Paddle and credited to the original payment method within 5 to 15 business days. For in-app purchases, please request a refund from the respective store described in A.4.1.

A.5 Content & Intellectual Property

A.5.1 User Content

Inputs you provide to the Services (caption text, questions, YouTube URLs, etc.) shall be referred to as "Input", and the corresponding outputs generated by AI (summaries, chat responses, etc.) shall be referred to as "Output". Input is voluntarily submitted to the Company by the user; the Company does not collect it automatically from the user's device.

A.5.2 Content Ownership

Input: Rights to content you input belong to you.
Output: The Company does not claim ownership of AI-generated Output. However, similar Output may be generated for other users from the same Input, and the Company does not warrant that Output is protected by intellectual property rights.
Original Content: Copyright in YouTube videos and their captions belongs to the respective creators.

A.5.3 License to Company

You grant the Company the following licenses to the extent necessary to provide and improve the Services:

For the duration of service operation: a non-exclusive, worldwide, royalty-free license to copy, display, store, and modify content
For the purpose of service improvement: a license to utilize content in de-identified and aggregated form

A.5.4 Company's Intellectual Property

All intellectual property rights (patents, copyrights, trademarks, trade secrets, etc.) in the Services, software, designs, logos, trademarks, and related technology belong to the Company. You are granted only a limited, non-exclusive, non-transferable license to use the Services.

A.5.5 Content Restrictions

The following content is prohibited from being entered into the Services:

Unlawful, threatening, defamatory, fraudulent, or obscene content
Content that infringes third-party intellectual property rights
Content containing malicious code or viruses
Sensitive personal information (national identification numbers, health information, financial credentials, etc.)

11. Contact Us

For inquiries regarding these Terms, please contact:

Email: contact@daki.app
Website: https://daki.app