# 손안의 오답공부 - 손오공 수학

> Let's study by collecting questions you don't know! You can study by making your own math incorrect answer notes with your smartphone.

Canonical page: [https://chrome-stats.com/d/com.jny.son50](https://chrome-stats.com/d/com.jny.son50)

## Overview

- **ID:** `com.jny.son50`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** JNY (제이엔와이)
- **Category:** EDUCATION
- **Downloads:** 1,010
- **Last updated:** 2026-04-05
- **First published:** 2026-04-05
- **Publisher country:** KR
- **Data as of:** 2026-10-02
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.jny.son50)
- **Privacy policy:** [https://sites.google.com/view/son50pp](https://sites.google.com/view/son50pp)

## Description

*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.<br><br>- It contains the previous SAT exam questions and mock exam questions.<br><br>- You can study by yourself while checking your study progress<br>   . Check according to the detailed process and difficulty (high, medium, low)<br><br>- You can study by selecting the type of problem yourself<br>   . by year of implementation<br>   . By detailed course<br>   . keyword search<br><br>- You can improve your skills anytime, anywhere by making your own incorrect answer notes.<br><br>- Various questions and incorrect answer notes can be printed out in PDF format.<br><br>- You can make it similar to the actual incorrect answer note through various stickers and themes.<br>  . You can decorate your own notes with various stickers (✔♥⭕❗❌) and colors.<br>  . Various themes are pleasing to the eye<br><br>- You can find and study the problems you need through keywords and detailed searches.<br>  . Solve the same type of problem with keywords<br>  . You can find and solve problems from easy to difficult problems.<br><br>- Try to solve the problem using the smartphone handwriting function.<br><br>- Checked problems can be saved and recalled in the cloud.

## Rankings

- #1,171,814 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.jny.son50)