나만의 진정한 AI 오답노트, OnO

Name: 나만의 진정한 AI 오답노트, OnO
Author: 기승민

Android app by 기승민. Education · 기승민

Store rating: Unknown
Store rating count: Unknown
Download price: Free to download
In-app purchases: Not listed in captured metadata
Version: 4.0.0
Listing last refreshed: 2026-09-15

Store description excerpt

This is a learning app that allows you to complete an error notebook with just a single photo, leading to skill improvement through AI analysis and review notifications. If you have ever wanted to organize your incorrect answers but gave up because it was too cumbersome, OnO is the perfect fit for you. It can be used for any subject, from the CSAT and school grades to certifications and foreign language studies. 1. Complete an Error Notebook with a Single Photo Simply take a picture with your camera or select one from your gallery to instantly create an error notebook. You can attach multiple images of both the question and the answer, and organize sources, notes, solution dates, and tags all at once. When you upload an image, the AI automatically recommends source titles and related tags. There is also a feature to batch register up to 20 questions at once, making it particularly useful for reviewing everything in a rush immediately after an exam. You can also capture your organized error notebook as an image card and share it on social media. 2. Three Templates to Suit Your Purpose You can choose one of three templates depending on the subject and situation. ▸ Memorization King Template — This is the basic format optimized for quick registration. Recommended for memorization subjects or simple problems. ▸ Problem Solving King Template — AI automatically erases blue handwriting on the problem sheet to keep it neat and tidy. Well-suited for Korean, English, and Social Studies. ▸ Guide Template — Provides handwriting removal as well as AI error analysis. Most powerful for Math and Science problems. You can select each template upon registration and change it later in the editing screen. 3. Identifying Weaknesses with AI Error Analysis For problems registered with the Guide Template, AI automatically analyzes which concepts are lacking based on the curriculum. It goes beyond simply collecting incorrect answers to clearly identify "why you got them wrong." The analysis starts automatically after uploading an image and can be viewed immediately upon completion. Analyzed weak concepts can also be collected separately in the learning report. 4. Re-solve Problems Directly Within the App You can write directly by hand within the app when re-solving problems. It supports 12 color palettes, adjustable pen and eraser thickness, pinch zoom, and panning, and is compatible with Apple Pencil. You can solve problems by flipping through multiple problem images in sequence, and the time taken is automatically measured by a timer. If you are in an environment where taking notes is difficult, you can also choose to solve the problems on the spot and upload a photo. Once you finish solving, your review record includes whether the answer is correct, the time taken, an improvement checklist (avoiding previous mistakes, discovering new solutions, clear understanding of concepts, and time reduction), and notes. History accumulates for each problem, showing

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