It is a quiz app for Eiken Grade 4.

Level 4 is the next target level after Level 5, which is the first goal of learning English.
You are expected to be able to understand and use simple English to express yourself.
Basic and important content that is one step higher than level 5 will be asked.
In addition to the primary test (writing and listening), a speaking test will also be introduced.
The speaking test does not affect the grade certification, and the pass/fail judgment is made on a speaking test basis.