Coworker is an Android utility tool developed by KwonOhsung. The app aims to streamline the process of pre-occupancy inspections for apartment residents. Users can document and save any defects or issues found during the inspection directly in the app instead of using traditional paper forms. This digital approach simplifies the reporting process and facilitates the efficient transfer of information to the construction company.

Coworker provides a convenient platform for residents to ensure that all identified problems are accurately recorded and promptly communicated to the relevant authorities. By utilizing this app, users can enhance the accuracy and effectiveness of pre-occupancy inspections, ultimately contributing to improved communication and problem resolution in residential construction projects.