전국성경고사합동 is an educational app designed for Sunday school students. It allows users to download and solve Bible quiz content based on their grade level. The app offers question sets for elementary, middle, high school, and adult levels.

The app automatically shuffles question numbers and example orders each time a quiz is generated. Users can also set time limits for multiple-choice questions.

To check their answers and scores, users must complete all the questions in a quiz. If there are any issues with the questions, users can report them to the app administrator using the "Report Question Error" feature in the top right corner.

Users can download and solve grade-specific question sets for free. The app also allows for updates to be made to the question content by the app administrator and provides the option to delete outdated question sets.

Additionally, there is a community bulletin board where users can share information related to Bible quizzes with other users.

Please note that we do not have any developer contact information available.