Last updated: 2026-10-14 · Effective: October 21, 2026
The Korean original (한국어 원문) and the latest version are at a-cha.app/terms
Article 1 (Purpose)
These Terms set out the conditions and procedures for using the A-CHA mobile app and the website a-cha.app (the "Service"), run by 아차코리아 (ACHA KOREA) ("A-CHA", "we"), and the rights, duties and responsibilities of A-CHA and its members.
Article 2 (Definitions)
"Member" means a person who has agreed to these Terms and created an account.
"User" means a Member or anyone using the website without signing in.
"Content" means posts, photos, comments, chat messages, reviews and anything else a Member puts on the Service.
"A-CHA event" means an event A-CHA runs itself and charges for, such as parties and trips.
"Partner events and offers" means events, dues, coupons and offers that student clubs, venues and similar partners ("Partners") post on the Service and run themselves.
"Points" means credits A-CHA gives Members under the rules it publishes.
Article 3 (Posting and changing these Terms)
We post these Terms, together with our company name, representative, address, contact details, business registration number and mail-order business report number, at the bottom of the website and on this page.
We may change these Terms within the limits of Korean law. When we do, we announce the change and the reason in the Service at least 7 days before it takes effect, or 30 days before if the change is unfavorable to Members.
If a Member keeps using the Service after the effective date without objecting, the Member is treated as agreeing to the new Terms. A Member who does not agree may delete their account.
Anything not covered here follows Korean law, including the Act on Consumer Protection in Electronic Commerce and the Act on the Regulation of Terms and Conditions, and general commercial practice.
Article 4 (What the Service includes)
A-CHA provides:
Community: boards, chats, finding friends, country and university rooms
Events: booking, payment and tickets for A-CHA events, and information and sign-ups for Partner events
Club and venue pages, travel and life-in-Korea information, and the Korea bucket list
Free tests on the website (Kimchi Gauge, Korean Saju, the Nunchi Exam) and sharing
Other features we announce in the Service
The basic Service is free. Anything paid shows its price before you pay.
Article 5 (Changing or pausing the Service)
We may change or end parts of the Service for operational or technical reasons, and we announce changes that significantly affect Members in advance.
We may pause the Service for maintenance, outages, natural disasters or similar unavoidable reasons.
The A-CHA online store (marketplace) closed on September 28, 2026. Questions about earlier orders are handled through Contact us.
Article 6 (Joining)
You join with an email address, Google or Apple, and must agree to these Terms and the Privacy Policy when you do.
Children under 14 cannot join without the consent of a parent or legal guardian.
We may refuse or later cancel a membership that uses someone else's details or false information, or that belongs to someone previously suspended for breaking these Terms.
A-CHA is a semi-real-name community. Your nickname, nationality and, if verified, your university may be visible to other Members. You can change what is shown in Settings.
Article 7 (Your account)
Keep your login secure. You are responsible for activity on your account. If you learn that someone else is using it, tell us right away. One person may have only one account.
Article 8 (What is not allowed)
We apply zero tolerance to the following. Members must not:
post sexual content, hate speech, racism or religious insults, threaten, harass or stalk anyone, or expose another person's private information
commit scams, trade illegally, or post or do anything else that breaks Korean law
impersonate others, use another person's photo as their own, or submit forged or edited verification documents (a fake student ID means a permanent ban without warning)
post content that infringes copyright or other rights
disrupt the Service through scraping, hacking, spam or mass advertising
break the community rules posted in the Service
Article 9 (Content)
You own your Content. You allow A-CHA to use it free of charge to run the Service and show it in the Service. We ask for your consent before using it outside the Service.
We may hide or remove Content that breaks Article 8 without prior notice. Content that reaches a set number of reports may be hidden automatically until it is reviewed.
Every post, message and profile can be reported, and you can block any Member. We review reports and usually act within 24 hours.
When you delete your account, your profile, posts, comments, reviews and chat messages are deleted. Transaction records we must keep by law follow Article 14.
Article 10 (Booking and paying for A-CHA events)
Check the price, schedule, place and cancellation terms on the event screen before booking. Prices are shown in Korean won (KRW).
You pay by bank transfer or PayPal. For a bank transfer, send the money, tell us in the app that you sent it, and your booking is confirmed once we see the payment. If we cannot confirm it within the time shown, the booking may be cancelled.
Confirmed bookings get a ticket (QR code) in the app for entry.
Points can be used up to the limit shown at checkout.
Article 11 (Cancelling and refunding A-CHA events)
Each event has its own cancellation and refund terms, such as a refund deadline, shown on the event screen before you pay. Those terms apply first, but they can never be less favorable to you than Korean law.
Some events, such as trips, are tied to a fixed date and are hard to resell, so they may be marked non-refundable before you pay. In that case we still explain how to transfer your ticket to someone else.
If A-CHA cancels an event because of bad weather, safety, not reaching the minimum number of people or similar reasons, you get a full refund.
Refunds go back the way you paid: PayPal payments to PayPal, bank transfers to the refund account you registered. We start the refund within 3 business days of the refund being decided. Your payment provider may take longer to show it.
Points used on a refunded payment are returned to you.
Article 12 (Partner events and offers)
Club dues and fees, and venue coupons and offers, are set and collected by the Partner directly. A-CHA is not a party to those sales. We provide the tools for listings, sign-ups and member lists.
The Partner is responsible for what it offers, the payment, and any cancellation or refund. Ask the club's staff to cancel or refund a club event fee.
If a dispute arises between a Member and a Partner, we help them get in touch and act on reported violations.
Article 13 (Points)
Points are given under the rules we announce in the Service, such as for inviting friends or photo reviews.
Points can be used to pay for A-CHA events up to the limit shown at checkout. They cannot be exchanged for cash or given to anyone else.
Points obtained improperly, or whose reason has been cancelled (for example, points from a refunded payment), are taken back.
Any remaining points expire when you delete your account.
Article 14 (Leaving and restrictions)
You can leave at any time by deleting your account in the app's Settings. If you cannot use the app, follow the email instructions on our account deletion page.
If a Member breaks these Terms or the community rules, we may remove Content, restrict the account or ban it permanently, and in serious cases report it to the police. You can reply to the notice you receive to ask for a second review.
After an account is deleted or terminated, we keep the transaction records Korean law requires for the required period (contract, withdrawal and payment records for 5 years, consumer complaint and dispute records for 3 years, and so on).
Article 15 (Meeting people offline)
Offline meetups that Members arrange with each other through the Service (such as flash meetups) are each Member's own decision. A-CHA does not verify or vouch for the people you meet. Meet in a public place the first time, and if someone asks for money, documents or a private location, don't go and report them instead.
Article 16 (Limits of liability)
A-CHA is not liable for losses caused by natural disasters, a Member's own fault, or outages of outside services such as payment, sign-in or maps, except where A-CHA acted intentionally or with gross negligence.
A-CHA is not liable for losses arising from dealings or meetings between Members, or between a Member and a Partner, unless A-CHA was at fault.
Results of the free tests (Kimchi Gauge, Korean Saju, the Nunchi Exam) are for fun and reference only. We do not guarantee their accuracy.
Article 17 (Disputes and jurisdiction)
Questions and complaints about the Service are received through Contact us (a-cha.app/support) and by email, and we tell you the outcome without delay.
If a dispute arises, you may apply for mediation to the Korea Consumer Agency, the Electronic Document and Transaction Dispute Mediation Committee or a similar body.
These Terms and use of the Service are governed by the laws of the Republic of Korea, and lawsuits go to the court with jurisdiction under the Korean Civil Procedure Act.
Article 18 (Language)
These Terms are provided in Korean and English. If the two differ, the Korean version applies.
Addendum
These Terms take effect on October 21, 2026. Previous versions: a-cha.app/terms.