티처빌 : 모바일 연수원 is an Android app developed by Tekville.com Inc. It falls under the category of Education & Reference and is available for free. This app is specifically designed for teachers in South Korea, catering to teachers from kindergarten to high school. With over 570,000 active teachers, it is the leading training platform for educators in the country.

The app offers several key features. Users can watch lectures anytime and anywhere on their smart devices, provided the lecture has a "mobile" label. It also provides a personalized classroom where teachers can conveniently access ongoing and review courses. Users can check their grades for exams, assignments, and participation. Additionally, the app introduces a progress tracking feature, allowing users to sync their progress between the mobile app and PC.

Furthermore, the app allows teachers to apply for courses and make payments directly through their mobile devices. Prior to enrolling, users can read reviews from fellow teachers to make informed decisions. The app also offers various training programs and resources, including professional development courses, lesson plans, and a teacher magazine.

Please note that the app requests optional access permissions to the device's storage for transferring and saving photos and files. However, the app can still be used without granting these permissions, although some functionalities may be limited. It is recommended to have an Android operating system version 6.0 or higher for optimal access permission settings.

In case of any issues, users can contact the developer for assistance.