내 등수는? (시험 성적 등수 계산기)

"What is my real rank after the exam?"

The agonizing wait for your report card is over! Simply enter your school exam statistics (mean, standard deviation, highest and lowest scores, and number of test takers), and instantly check your top percentile and statistically estimated rank in real-time.

🔥 Key Features

Sophisticated Statistical Model-Based Estimation: Going beyond the standard normal distribution, we apply the Truncated Normal model—which best fits the actual distribution of student scores—to calculate ranks and percentiles with much higher accuracy.

Visualized Score Distribution Charts: At a glance, intuitive graphs show exactly where your score fits within the overall student distribution.

Smart Grade Management: Neatly save your past exam records by subject and date, and easily retrieve them whenever needed to compare your grade trends.

Convenient Result Image Sharing: With a single touch, you can copy your calculated grade results to the clipboard or capture them as an image to quickly share with friends, parents, and teachers. AI Grade Analysis Report (Optional Feature): By integrating with the latest Google Gemini API, you can receive personalized AI commentary reports that provide in-depth analysis of your grade trends and suggest future learning directions.

🎯 Highly Recommended for:

When you are desperately curious about your approximate standing immediately after middle school, high school, or university exams, before your report card is issued.

When you want to continuously record grades across multiple subjects and systematically monitor changes in your academic achievement.

When you want smart grade feedback that goes beyond simple numerical figures and is objectively analyzed by AI.

🔐 Safe AI Features and Security Guide (Google Gemini Integration)

This app thoroughly protects users' valuable personal information and assets.

The AI ​​report feature aims for a clean environment powered by Google AI Studio API keys issued directly by the user.

The entered API key is never stored on external servers and is securely encrypted and stored only within the user's device.

Since it communicates securely with official Google servers only at the moment of requesting AI analysis, you can use it with peace of mind.

⚠️ Important Precautions Before Use

The estimated ranks, percentiles, and AI reports provided in this app are 'estimates and reference data' based on sophisticated statistical models.

Due to specific distributions of actual students by school and tie-breaking regulations, there may be slight differences from the rankings on official school report cards. Please use this strictly for reference purposes to aid in your personal academic reflection.