Draft

Terms of Service

This is a draft. It may change after legal review before launch.

Last updated: November 9, 2026

At a glance

  • The app is free, and Mongi comes with it.
  • To collect characters, you make an account with your email. No password: you sign in with a link we email you.
  • Invite a friend, and once they install the Mongi app and have their first chat, Dubu comes to both of you. Paid characters are bought on our website.
  • You can get a full refund on a character you bought as long as you haven't downloaded it yet. After you download it, we refund only if something is wrong with the file.
  • Characters talk through the AI you connect. AI costs come out of your own plan with that company.
  • Connecting a ChatGPT or Claude subscription may not be a route those companies officially offer. If that worries you, connect with an API key instead.
  • Your chats and memories stay on your computer.

1. About these Terms

These Terms of Service ("Terms") set out the conditions for using the Mongi app and website (the "Service") provided by [Operator name] ("we," "us" or "our").

2. The Service

  1. The app shows a character on your computer screen and lets that character talk with you through an AI service you connect.
  2. You can download the app for free from our website.
  3. When a new version is available, the app may download and install it on its own.
  4. On our website you can make an account, get or buy characters, and download the characters you have.

3. AI connections and costs

  1. Characters talk using an AI service you connect yourself: a ChatGPT subscription, a Claude subscription, or an OpenAI or Anthropic API key.
  2. The cost of using AI is governed by your own plan or agreement with that company. We do not collect AI costs from you or pay them on your behalf.
  3. Answers generated by AI may be inaccurate. Please don't rely on what a character says when making important decisions.

4. Connecting a ChatGPT or Claude subscription

  1. The app offers a way to talk with characters using a ChatGPT or Claude subscription you already have. This connection may not be a method officially provided or approved by OpenAI or Anthropic.
  2. Depending on each company's policies, the connection may stop working without notice, your subscription usage may be restricted, or action may be taken against your account.
  3. Whether to use a subscription connection is your choice. We are not responsible for any account or usage restrictions that result from using a subscription connection.
  4. Your sign-in details and tokens are stored only on your computer and are never sent to our servers. Chat requests go directly from your computer to the company concerned.
  5. If you'd rather avoid this risk, you can connect with an OpenAI or Anthropic API key instead.

5. Your account

  1. An account is just an email address. There's no password: each time you sign in, we email you a sign-in link and you open it.
  2. One person, one account. Please don't make an account with someone else's email or hand your account to someone else.
  3. Because your email is your key, keep access to that inbox. If you lose it, you may not be able to sign in or download the characters on your account.
  4. You can delete your account at any time by emailing [email protected] from your account email. Deleting your account also removes the characters on it. We keep transaction records only for as long as the law requires.
  5. You don't need an account to use the app or to live with Mongi.

6. Rights to characters

All rights to the artwork, writing and settings of the characters that come with the app, and of the characters you get or buy on our website, belong to us or to the artist who created them. You may use them for personal purposes within the app, but you may not extract, distribute or sell them separately.

7. Buying characters

  1. A paid character is a digital content file for the app. When you buy one, your account gets a personal license to use that character in the app. The license can't be transferred or resold, and it doesn't make you the owner of the character itself.
  2. You can download a character you bought from our website or the app while signed in to the same account.
  3. In Korea, you pay in Korean won through Toss Payments. We are the seller, and the price shown includes VAT.
  4. Everywhere else, you pay in US dollars through Paddle. Paddle.com Market Ltd ("Paddle") is the Merchant of Record: Paddle sells the character to you and handles payment, tax, invoices and refunds for that order. Depending on where you live, sales tax or VAT may be added at checkout. Paddle's buyer terms also apply to these purchases.
  5. We never see or store your card number or other payment details.
  6. Before you pay, we show you the character, its price, what you get, and that you can't cancel once you download it, and we ask you to agree.

8. Cancellations and refunds

  1. If you haven't downloaded a character you bought yet, you can cancel within 7 days of purchase for a full refund.
  2. Once you download the character, you can no longer cancel. Because the content is delivered right away, at checkout we ask you to agree to immediate delivery and to acknowledge that you lose your right to cancel (including the statutory withdrawal right in the EU and UK) once you download it.
  3. If a downloaded character is faulty, for example it won't open, or it isn't what we described, we'll refund or replace it as the law requires.
  4. A refunded character is removed from your account. Paddle processes refunds for orders paid through Paddle.
  5. How to ask, how long it takes and notes for each payment method are in our Refund Policy.

9. Invite rewards

  1. You can invite friends with your own invite link. When a friend opens it, makes a new account, installs the Mongi app and has their first chat in it, both of you get the invite character (Dubu) on your accounts. Until then, the invite shows as "waiting".
  2. You get one reward per new account. Inviting yourself, or someone who already had an account, doesn't count.
  3. We may withhold or take back rewards obtained through fake accounts, multiple accounts or other abuse.
  4. Invite rewards and free characters have no cash value and can't be exchanged for money, refunded or transferred.

10. Your data

Your chat history, memories and settings are stored on your computer and are never sent to our servers. The account and purchase information we do receive is described in our Privacy Policy.

11. What you may not do

  1. Copy, modify or distribute the app or its characters without permission.
  2. Share or sell the files of characters you bought.
  3. Use fake or multiple accounts to collect invite rewards.
  4. Interfere with the operation of the Service.

12. Limitation of liability

  1. We are not responsible for interruptions, changes, errors or charges of the AI services you connect.
  2. If you suffer harm because of our intentional misconduct or gross negligence, we will be liable as required by applicable law.

13. Changes to these Terms

When we change these Terms, we will post a notice on our website at least 7 days before the change takes effect. For changes that are unfavorable to you, we will give at least 30 days' notice.

14. Contact and business details

If you have questions about the Service, email us at [email protected].

  • Company: [Company name]
  • Representative: [Representative]
  • Business registration number: [사업자등록번호]
  • Mail-order business registration: [통신판매업 신고번호]
  • Address: [Business address]
  • Phone: [전화번호]

Effective date

These Terms take effect on the day the Service launches.