Terms of Service (Diary Box)

Effective date: 2026-09-29 · Last updated: 2026-11-13 · Revision effective: 2026-11-20

1. Purpose

These Terms govern the rights, obligations, and responsibilities between Vision In You (비전인유; representative: Hyeongjo Lim) ("Operator") and users in relation to the use of Diary Box — the iOS, Android, Mac and Windows apps and the web app ("Service").

2. Definitions

  1. "Service" means the apps and web app that let users write memos in a chat-style interface, organize them into user-defined boxes (folders), and manage to-dos, events, reminders, and notes alongside them.
  2. "User" means anyone who agrees to these Terms and uses the Service.
  3. "Content" means text, images, links, files, notes, recordings, and other materials a user inputs or uploads.

3. Effect and Changes

  1. These Terms take effect when posted within the Service or on a page designated by the Operator.
  2. The Operator may amend these Terms within the limits of applicable law, with notice at least 7 days before the effective date (30 days for changes that are unfavorable or material to users).
  3. Continued use after the effective date constitutes acceptance of the amended Terms.

4. The Service

  1. The Operator provides: chat-style memos (text/image/link/file) and saving content shared from other apps; creation and management of user-defined boxes and moving/organizing memos; to-dos, events, reminders, a calendar, and notes with recording and transcription; a unified all-boxes view, search, and cross-device sync; shared boxes used together with other users and friend invitations; adding events detected in memos to the device calendar and importing memos from KakaoTalk/LINE; and reading and writing your boxes through AI services you connect yourself (AI Connect).
  2. The Service can be used free of charge. Free users may use the Service within the box limits set by the Operator (4 personal boxes, excluding the Inbox, and 1 shared box). A referral reward increases the personal box limit by 1. Free users may see ads in the iOS/Android app (there are no ads in the Mac, Windows, or web versions).
  3. The Operator offers a paid service (Pro) as described in Section 5.

5. Paid Service

  1. What you get: Pro users can create personal boxes without a practical limit (capped at 200 to prevent abuse) and up to 5 shared boxes, can use Pro themes (colors and patterns) and home screen widgets (box memos, upcoming events, today's to-dos), and see no in-app ads. The specific benefits are those shown on the in-app paid plan screen.
  2. Products and prices: Pro is offered as monthly and annual auto-renewing subscriptions. The products on sale, their prices and periods, and whether a free trial is included are shown on the in-app paid plan screen and the store's payment sheet before you pay. Pro can be purchased in the iOS and Android apps and is also available on Mac, Windows, and the web when you sign in with the same account.
  3. Payment: Payments are processed by Apple or Google through your App Store or Google Play account. The Operator does not collect your payment card details.
  4. Auto-renewal and free trials: A subscription automatically renews for the same period and price unless cancelled at least 24 hours before the end of the current period. The renewal is charged to your store account within 24 hours before the end of the current period. For products with a free trial, the trial converts to a paid subscription and is charged when it ends unless you cancel at least 24 hours before the trial ends.
  5. How to cancel: You can cancel at any time in your store's subscription settings — App Store (Settings → Apple Account → Subscriptions) or Google Play (Play Store → Payments & subscriptions → Subscriptions). After cancelling, you keep Pro until the end of the period you have already paid for. Deleting the app or your account does not cancel your subscription.
  6. Withdrawal and refunds: Because payments are made through the stores, requests to withdraw from a purchase or for a refund must be made to Apple or Google under their refund policies and procedures, and are subject to applicable law, including the Korean Act on Consumer Protection in Electronic Commerce. The Operator will cooperate as needed to process your refund request.
  7. Price changes: If the Operator changes the price of Pro, it will give notice in advance through the app or the store. Subscription price increases are notified by the stores under their policies and, where required, your consent is obtained.
  8. Restoring purchases: On a device signed in to the same store account, you can re-apply your purchase with "Restore purchases" on the paid plan screen.
  9. When Pro ends: If your subscription is cancelled, expires, or is refunded, the free limits apply again. Boxes you already created and your stored data are not deleted or hidden: you can open and search every box and move or delete its memos. If you have more personal boxes than the free limit, new memos can only be written to the 4 personal boxes you wrote in most recently (5 with a referral reward), the Inbox, and shared boxes; your other personal boxes become view-only. You cannot create new boxes beyond the free limits, and Pro-only features (such as Pro widgets) are restricted.

6. Formation of Contract

The contract is formed when the user agrees to these Terms, reviews the Privacy Policy, and completes sign-up via Apple, Google, or Kakao social login.

7. User Obligations

Users must not:

  1. Create or upload content that infringes others' rights (copyright, privacy, etc.)
  2. Store or distribute content that violates law or public order and morals
  3. Interfere with the Service's normal operation, or attempt abnormal access or reverse engineering

8. Content Rights

  1. Rights in content created/uploaded by the user belong to the user.
  2. The Operator stores/processes content only as necessary to operate, sync, and back up the Service, and does not provide it to third parties for marketing.
  3. When a user deletes content or their account, the Operator deletes such content in accordance with the Privacy Policy. Memos and attached photos and files that you have not deleted are kept with no time limit on both the free and paid plans; memos and boxes you delete are permanently erased together with their attached photos and files after 30 days.

9. Changes / Suspension

The Operator may modify or suspend all or part of the Service for operational or technical reasons, with reasonable prior notice where feasible. If the Operator discontinues the paid service during a Pro period for its own reasons, it will give prior notice and handle the matter in accordance with applicable law and the stores' policies.

10. Termination and Data Deletion

  1. Users may terminate at any time via Settings tab → Delete account.
  2. Upon account deletion, all data linked to the account (boxes, memos, notes, to-dos, events, attached images, files, and recordings) is immediately and permanently deleted and cannot be recovered.
  3. Deleting your account does not automatically cancel an App Store / Google Play subscription. Please cancel it as described in Section 5(5) before deleting your account.

11. Disclaimer

  1. The Operator is not liable for service disruptions caused by force majeure, outages of processors (such as cloud or payment providers), or causes attributable to the user. However, the Operator is liable in accordance with applicable law for damages caused by its intent or negligence.
  2. The Operator is not responsible for the accuracy or reliability of user content and has no duty to intervene in disputes between users or with third parties.
  3. Users are encouraged to keep separate backups of important data.

12. Governing Law and Disputes

  1. These Terms are governed by and construed under the laws of the Republic of Korea.
  2. Disputes are subject to the competent court under the Korean Civil Procedure Act as the court of first instance.
  3. For users outside Korea, where mandatory consumer-protection laws of their place of residence apply, this section does not limit the rights guaranteed by such mandatory laws.

13. Business Information and Contact