*It is an application that allows you to quickly find the type of problem and *make your own notes for incorrect answers and study efficiently.

- It contains the previous SAT exam questions and mock exam questions.

- You can study by yourself while checking your study progress
. Check according to the detailed process and difficulty (high, medium, low)

- You can study by selecting the type of problem yourself
. by year of implementation
. By detailed course
. keyword search

- You can improve your skills anytime, anywhere by making your own incorrect answer notes.

- Various questions and incorrect answer notes can be printed out in PDF format.

- You can make it similar to the actual incorrect answer note through various stickers and themes.
. You can decorate your own notes with various stickers (✔♥⭕❗❌) and colors.
. Various themes are pleasing to the eye

- You can find and study the problems you need through keywords and detailed searches.
. Solve the same type of problem with keywords
. You can find and solve problems from easy to difficult problems.

- Try to solve the problem using the smartphone handwriting function.

- Checked problems can be saved and recalled in the cloud.