Article 1 · Personal data we collect
The Service collects and uses the following items.
a. Sign-up and authentication (Google sign-in)
- Google account identifier, email address, name (if set on your Google account), internal member identifier, sign-in session token
- Date of birth: processed once, at sign-up or on your first sign-in after a change to the minimum-age requirement, solely to confirm you are 18 or older. Only users aged 18 or older may register. Your date of birth is never stored or logged; only the over-18 confirmation result is kept on your account.
- For paid (Pro) use: plan status and expiry date
b. While using rate comparison
- Search conditions: hotel name, city, country, check-in/check-out dates, guest count, room count
- Compared rates: price, currency, whether taxes are included, room type, meal/cancellation terms, the booking site address (domain only — no paths or query strings), and capture time
- On manual-entry sites, you select a recent comparison and site, then enter the total and currency you checked. To determine the save method, the Chrome extension checks the active tab URL once on your device, derives only the hostname, and immediately discards it. The URL and hostname are neither stored nor transmitted, and Manual entry does not read the page title or content.
- Booking conditions on official hotel sites are processed by the Chrome extension only when that hotel chain’s permission status is active. For chains that are inactive in the latest Chrome extension, the extension does not read the page body or title, and the server also refuses to store booking conditions for that chain.
c. On payment (paid use)
- Order identifier, product name, payment amount, payment status, payment approval key, completion time
- Payment-method details such as card numbers are handled directly by the payment processor (Toss Payments) and are never stored on the Service’s servers.
d. Automatically generated data
- Service usage records (search, comparison, and claim history), access times
- Automatic-capture failure diagnostics: supported-site domain, failure reason code, whether key fields were detected, and the Chrome extension version (no page address, hotel name, or page content)
Article 3 · Retention periods
In principle, personal data is destroyed without delay once its processing purpose is fulfilled. The Service’s automatic retention and deletion policy is as follows.
- Sign-in session tokens: expire and are deleted after 7 days of inactivity, or 30 days at most
- Date of birth: discarded immediately after the over-18 check; never stored
- Over-18 confirmation result: kept with your account until you delete the account
- The Chrome extension’s Google authentication token for age verification: kept in Chrome session storage for up to 5 minutes while waiting for date-of-birth input, and deleted on completion, failure, sign-out, expiry, or browser close
- Search history: the most recent 10 searches on Free, 200 on Pro (older entries are deleted automatically). Searches and comparisons whose check-in date has passed are deleted automatically at sign-in (claim records are kept for statistics). Of these, direct web searches with no automatic capture or claim attached keep only the 3 most recent, and search conditions are not stored separately in cookies or browser storage.
- Comparison (capture) history: up to 10 per search on Free, 20 on Pro; older entries deleted automatically
- Anonymous rate-pool data (Article 4 below): kept only for the day of collection, then destroyed
- On account deletion: related personal data, including the Google account identifier, is destroyed and operator identifiers in audit history are anonymized (transaction records that must be retained by law are kept separately for the required period)
Transaction records that must be retained under the Act on Consumer Protection in Electronic Commerce and related statutes are kept for the periods below.
- Records on contracts and withdrawal of offers: 5 years
- Records on payment and supply of goods or services: 5 years
- Records on consumer complaints and dispute resolution: 3 years
- Completed, failed, or cancelled transactions past the 5-year retention period, and their linked payment events, are destroyed automatically by a scheduled batch job
Article 4 · Anonymous rate statistics
The Service may anonymously aggregate rates confirmed by multiple users and show them as a “suggestion” (for reference) to other users searching the same conditions. This aggregation stores nothing that could identify who collected the rate (no member identifier, no page address), and a rate is included only when the official and candidate rates’ dates, guest count, room count, and room type are all confirmed to match, with no explicit mismatch in meal, cancellation, or tax terms. The data is used only on the day of collection and then destroyed.
Article 5 · Third-party provision
The Service does not provide personal data to third parties without your consent, except where required by law or upon a lawful request from an investigative authority. (For processing entrusted to service providers, see Article 6.)
Article 6 · Entrusted processing and cross-border transfers
The Service entrusts the following processing to provide the Service.
| Processor | Entrusted work | Data involved | Location | When and how | Retention basis |
|---|
| Amazon Web Services (AWS) | Web/API server and database hosting | Member, search/comparison, claim, and transaction records the Service collects and stores | South Korea (Seoul region) | Processed over HTTPS during Service use | Retention periods in this policy |
| Toss Payments Co., Ltd. | Payment processing and payment-history management | Order and payment details, email (shown in the payment window — card details are handled by Toss directly) | South Korea | Processed over HTTPS at payment request/approval | Applicable law and Toss Payments’ policy |
| Anthropic, PBC | AI-assisted rate extraction, comparison explanations, and claim checklist tips | Pattern-extracted amount/date/guest tokens; numeric, date, enum, and closed condition tokens; chain rules and checklist states (no page text, titles, URLs, hotel names, free-text room/meal/ cancellation descriptions, claim bodies, member identifiers, or emails) | United States (cross-border) | Sent over HTTPS when you run an AI-assist feature | Anthropic’s policy and contractual retention terms |
| Google LLC | Google account sign-in (authentication) | Authentication token, email and profile | United States (cross-border) | Sent over HTTPS when you sign in with Google | Google’s policy and contractual retention terms |
Cross-border transfers — personal data leaves Korea only for AI processing (Anthropic, US) and Google sign-in (US). Closed tokens and rule data sent to the AI are not stored separately by the Service and are discarded after processing; page text, titles, URLs, hotel names, free-text room/meal/ cancellation descriptions, claim bodies, screenshots, raw HTML, cookies, passwords, and card details are never sent. If you do not wish to use Google sign-in, member features are unavailable; if you do not wish to use AI assistance, those assist features are unavailable. Rate comparison and history work without the AI assist features.
Article 13 · Remedies for privacy infringement
For counseling or dispute mediation regarding privacy infringement, you may contact the following Korean authorities.
- Personal Information Dispute Mediation Committee (privacy.go.kr / +82-1833-6972)
- KISA Privacy Infringement Report Center (privacy.kisa.or.kr / 118, within Korea)
- Supreme Prosecutors’ Office Cybercrime Division (spo.go.kr / 1301, within Korea), National Police Agency Cyber Bureau (ecrm.police.go.kr / 182, within Korea)
Article 14 · Changes to this policy
This policy may be revised to reflect changes in law or the Service. Revisions and their effective dates will be announced on this page.
Change notice: 2026-08-11 Added notice about affiliate-link commissions and possible destination-site affiliate tracking.