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"Calculation Master" is a math learning app designed for elementary school students (grades 1-6) to help them develop their calculation skills while having fun.

■ 34 Levels of Curriculum
Covers calculations from all six years of elementary school, from basic addition and subtraction to multiplication tables, long multiplication, division, decimals, and fractions. The levels are organized by grade level, allowing children to learn at their own pace.

■ Start According to Grade and Semester
Simply select your child's grade and semester when starting the app. They can begin learning at the perfect level—not too difficult, not too easy.

■ Advance to the Next World with a Proficiency Test
Each world concludes with a "Proficiency Test." Challenge yourself with 40 questions summarizing the learned unit; passing unlocks the next world. This allows you to check your progress at key milestones.

■ Daily Recommended Problems
Recommended problems tailored to your child's skill level are displayed daily on the home screen. "Challenge" problems are also available for strong students. Difficult topics can be practiced repeatedly using the "Retry" function.
■ Time Attack Drills
Challenge yourself with drills at all levels! Compete to see who can answer all 30 questions correctly the fastest and earn bronze, silver, or gold ranks. You can challenge yourself as many times as you like to beat your best time.

■ Authentic Calculation Practice in Calculation Mode
Multiplication and division problems are displayed in the actual calculation layout. You can practice in the same format as a school notebook and master the calculation procedure.

■ Easy-to-Understand Fill-in-the-Blanks Answers
Answers to decimals and fractions are also easily entered using the fill-in-the-blank format. Decimal points and fraction lines are already displayed, so even young children won't get confused as they only need to enter the numbers one by one.

■ Parent Dashboard
The parent menu with PIN lock allows you to check your child's learning progress at a glance. You can check today's number of questions, correct answer rate, study time, weekly graph, difficult problems, and drill results. You can also set the number of questions and time limits.

■ Supports Voice Input
Press the microphone button to input answers by voice. Even children who struggle with handwriting can answer smoothly.

■ Offline Use
No internet connection required. All data is stored on your child's device. Learn anytime, anywhere without worrying about data charges.