오답노트AI vs Simple Note
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
오답노트AI
This app uses AI to automatically create personalized study notes and practice tests from your incorrect answers. Simply photograph your mistakes, and the AI will transcribe them, organize them by subject, and generate similar problems for further practice. It also offers an AI tutor for instant help and tracks your progress with weekly reports.
- AI-generated study notes from photos
- Automatic organization by subject and unit
- Personalized practice tests with similar problems
- AI tutor for instant help with questions
- Spaced repetition for review
- Weekly progress reports
- Printable PDF test creation
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찍기만 하세요. 오답노트는 AI가 만듭니다. 틀린 문제를 오려 붙이고 옮겨 적다 보면, 정작 다시 풀 시간이 없습니다. 오답노트AI는 사진 한 장으로 그 과정을 대신합니다. 이렇게 작동해요 • 틀린 문제를 찍고 영역만 맞추면 끝 — 지문과 보기는 AI가 읽어 옮겨 적습니다 • 그래프·도형처럼 눈으로 봐야 아는 값은 맞게 읽었는지 한 번 물어봅니다 • 과목과 단원으로 알아서 정리되고, 다시 볼 때가 되면 올라옵니다 정답부터 보여주지 않아요 • 힌트 → 풀이 방향 → 단계 해설 → 정답 순서로 하나씩 열립니다 • 필요한 만큼만 보고 다시 풀어봐도 됩니다 • 설명 방식과 말투를 고르면 해설도 그 결대로 옵니다 막히면 AI튜터에게 바로 • 공부하다 막힌 문제를 찍어서 바로 물어보세요 — 오답 등록 없이도 됩니다 • 대화는 저장돼요. 어제 하던 질문을 오늘 이어서 할 수 있어요 • 등록해 둔 내 문제를 불러와 이어서 질문할 수도 있어요 복습이 알아서 돌아와요 • 정답을 확인한 문제는 다음 날 "다시 풀 문제"로 돌아옵니다 • 맞히면 3일 뒤 한 번 더, 두 번 연속 맞히면 학습 완료 • 다시 풀 문제가 있는 날 저녁에 알려드려요 (시각 변경·끄기 가능) 같은 문제를 또 푸는 대신 • 숫자와 조건을 바꾼 유사문제를 만들어 줍니다 • 앱이 직접 풀어보고 정답이 맞은 문제만 내보냅니다 내 오답만 모은 시험지 • 틀린 문제만 골라 한 장으로 묶어 시험처럼 풀 수 있어요 • 유사문제로 바꿔 출제하면 채점과 성적표까지 나옵니다 • PDF로 뽑아 인쇄해서 손으로 풀 수도 있습니다 (정답지는 맨 뒤에 따로) 일주일의 노력이 쌓입니다 • 일요일 아침, 한 주 동안 등록하고 복습한 기록을 주간 리포트로 정리해 드려요 • 단원별 오답 수와 며칠째 이어왔는지, 어디가 약한지도 한눈에 오답노트AI Pro (선택 구독) 무제한 오답 정리, 무제한 유사문제, 무제한 AI 질문, 문제지 PDF 추출을 이용할 수 있어요. • 월간(₩9,900) 또는 연간(₩79,000) 자동갱신 구독이며, 기간 종료 24시간 전까지 해지하지 않으면 자동 갱신됩니다 • 결제는 Apple ID 계정으로 청구되며, 구독 관리·해지는 App Store 설정에서 언제든 가능합니다 • 이용약관: https://odapnote.ai.kr/terms • 개인정보처리방침: https://odapnote.ai.kr/privacy
Simple Note
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This is a handwriting note-taking app designed for students and classes. We developed it with a simple layout so you can easily separate notes by subject or theme and use it comfortably during class. ■ Recommended Environment This app is designed for handwriting with an Apple Pencil. Due to screen size, we recommend using an iPad. You can still handwrite with your finger or a stylus on an iPhone, but for writing on a full page, the iPad provides a much more comfortable experience. ■ Manage Notes on Your Bookshelf Create as many notebooks as you like for different subjects or themes (up to 1 notebook in the free version). You can set a cover using your photos and crop them to your liking. Covers and titles line up on the bookshelf, allowing you to quickly find and open the note for your class. ■ Handwriting Features Focused on Comfort Supports Pen, Eraser, and Undo/Redo. Choose from blank, lined, or grid paper. Includes a function to clear the entire page (with a confirmation dialog to prevent accidental deletion). Pinch to zoom in on the paper, making it easy to write small text. On iPad, you can write on the same paper size regardless of the screen orientation (portrait or landscape). ■ Check Writing History on the Calendar Features a "History" tab where you can look back at pages by the date they were written. See at a glance when and in which class note you wrote. You can also check the writing history for each notebook separately. ■ Export Function (Ready for Submission) Export a single page as an image. Select multiple pages and export them as a single PDF. Export the entire notebook as a PDF (you can choose whether to include blank pages). If you register your name in the settings, your name and the date will be automatically printed at the bottom of the exported pages. When submitting homework or reports, it's clear at a glance who wrote it and when. ■ Fully Functional for Free Even in the free version, you can use all the following features within 1 notebook: Handwriting input, eraser, Undo/Redo Clear page & rewrite Export individual or multiple pages Export the entire notebook as a PDF Change notebook covers You can fully try it out with one notebook without any feature restrictions. ■ Manage Multiple Notes with Premium By purchasing Premium (a one-time purchase for permanent use), you can create an unlimited number of notebooks. This is perfect for those who want to manage notes separately by subjects like English, Math, Science, and History. ■ Recommended for: Students who want to organize class notes by subject. Those who want to carry handwritten class notes on their iPad with an Apple Pencil. Those who want to submit homework or assignments exactly as handwritten. Write like you would on a paper notebook, and export digitally when needed. We hope you'll use it for your daily class notes.
Screenshots
Verdict
The clearest difference is in-app purchases: 오답노트AI at none against Simple Note's 1. 오답노트AI also leads on iOS requirement (18.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Simple Note sells 1 one-off in-app purchase. 오답노트AI asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on October 7, 2026 and September 28, 2026 respectively.
| Parameter | 오답노트AI | Simple Note |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Every 2 days | Every 2 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 33 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | 2Labs | TAKASHI KOJIMA |
In-app purchases
오답노트AI
No in-app purchases
Simple Note
- Premium Feature$5.99









