Chaengru
Terms of use
Effective date: September 9, 2026
1. Operator and scope
These terms apply to Chaengru, provided by IBRDOS Co., Ltd. ((주)아이비알도스, the “Company”). Contact dev@ibrdos.com for service or terms inquiries. Information handling is described in the Privacy Policy.
2. Features
Chaengru stores reusable packing checklists and checked states on your device. Create a list from Work, Gym, Swimming or Travel examples, or start your own. Rename, duplicate or delete lists; add, edit, remove or check items; and reset checked states. The app provides JSON backup and restore, and Korean and English interfaces.
There are no accounts, paid subscriptions or in-app purchases. Separate charges imposed by your carrier, device provider or app marketplace remain subject to their terms.
The Company grants a non-exclusive right to use the app for its ordinary purpose. This does not transfer ownership of the app or its branding or trademarks. Open-source components remain subject to their licenses. Rights under mandatory law and required marketplace terms are preserved.
3. Items and checked states
Example lists provide general starting points. Add or adjust items for your purpose, destination, equipment and facility rules. Examples do not represent all necessary items or safety requirements.
Checked states reflect your input. The app does not automatically detect or certify whether an item is physically present, suitable for use or ready for departure. It does not provide automatic reminders or scheduling.
Reset clears checks in the selected list while keeping its item names and structure. After deleting a list or item, resetting checks, deleting all lists or restoring a backup, Undo can restore the previous state once within 8 seconds and before the next save. Undo is not preserved after the app closes.
4. Storage, backup and deletion
Deleting a list also removes its items and checked states. After confirmation, backup restore replaces all lists and items on the device with the selected backup; it does not merge them. Language and appearance preferences are also replaced with the backup values.
Backups are plain-text files. Manage their storage and sharing locations appropriately. Uninstalling the app or deleting all lists does not delete exported backup files. The Company does not retain a server copy of your checklists. Device changes, uninstalling the app, operating-system behavior and backup settings may affect data. Export a backup of lists you want to keep.
Limits apply to the number of lists and items, name lengths and stored data size. Reaching a limit restricts a new save without automatically removing existing data. See Support for the limits.
5. Appropriate use
Do not use the app to violate laws or others’ rights, compromise service security or artificially manipulate ad impressions or clicks. This clause does not restrict activities protected by applicable law.
6. Advertising and external services
Chaengru includes Google AdMob banners below the list-selection and item-checking screens. Viewing or clicking an ad is not required to use the checklist features. Advertised products and services are supplied by the relevant advertiser, whose terms apply to transactions. Displaying an ad does not mean the Company sells or endorses the product.
7. Service changes and responsibility
The Company may update or change the app for improvements, security, operating-system changes or reasonable operational reasons. Material changes affecting use will be communicated in the app or on an information page.
The Company bears responsibility under applicable law. These terms do not exclude liability for the Company’s intentional misconduct or gross negligence, or rights that cannot legally be excluded.
8. Changes and disputes
Changes to these terms and their effective date will be communicated in the app or on an information page. A separate consent process applies where required by law. Send service inquiries or disputes to dev@ibrdos.com. Applicable law and jurisdiction follow mandatory law and the rules of the competent courts.