오답노트 - 틀린 문제 복습

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Content rating
Everyone
50+
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Content rating
Everyone
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About this app

Error Note is a study review app that helps you build your skills by saving photos of incorrect problems and solving them again.

Instead of just moving on when you get a problem wrong, you can create your own error note by registering a photo. You can organize saved problems by subject and review them repeatedly through the "Resolve" and "Study Records" features.

■ Key Features

1. Register Problem Photos
You can save incorrect problems to your Error Note by taking a photo with your camera or importing them from your album.

2. Organize Errors by Subject
You can classify and manage problems by subject, such as Math, English, Science, and Social Studies.

3. Resolve Study
You can identify which problems you repeatedly get wrong by resolving your saved incorrect problems.

4. Manage Study Records
You can build consistent study habits by checking the number of problems reviewed, your accuracy rate, and consecutive review days.

5. Points and Levels
You can earn points and level up when you complete a review. You can feel the sense of growth as you study consistently.

**Incorrect Answer Note** 6. Decoration Elements

Collect points to use various decoration items such as notebooks, badges, themes, and stickers.

7. Create Review PDFs

You can create an A4-sized PDF of selected incorrect answers to print or share. If necessary, you can also organize the answer key.

8. Review Notifications

You can set notifications to ensure you don't forget your review time.

■ Recommended for Students

- Students who want to reorganize their incorrect answers
- Students who want to collect photos of their workbooks or test papers
- Students who want to manage incorrect answers by subject, such as Math, English, and Science
- Students who want to build a habit of repeated review
- Students who want to collect only their incorrect answers and solve them again before an exam
- Students who want to consistently build their own study records

■ Incorrect Answers Turn into Skills

Incorrect answers are not failures, but opportunities to grow again.

The Error Note helps you consistently review by allowing you to easily collect, re-solve, and record the problems you got wrong.

Don't just skip over the problems you got wrong today; try saving them to the Error Note. Small mistakes accumulate to become your own unique skill.
Updated on
Jun 2, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
App activity, App info and performance, and Device or other IDs
This app may collect these data types
Location, Personal info and 3 others
Data is encrypted in transit
You can request that data be deleted
Content rating
Everyone
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App support

About the developer
윤희영
happyyhy1004@gmail.com
South Korea