KEI NOTE (케이노트) AI PDF 필기 노트
Everyone
info
5+
Downloads
About this app
KEI NOTE is a note-taking app that allows you to open PDFs of lecture materials, textbooks, and worksheets to take notes directly on them and organize your studies with KEI AI. On tablets, you can write with a pen just like on paper, while on mobile phones, you can view files at a glance and quickly find and open them.
KEI NOTE ■ Handwriting like paper
- Standard pen, fountain pen, brush pen, marker, colored pencil, dotted line pen; 4,096 levels of pressure and sensitivity adjustment
- Highlighter that doesn't obscure text; pen presets; drawing only with the pen (finger moves the screen)
- Pause the pen to straighten lines, circles, squares, and stars
- Use the lasso tool to select, move, rotate, resize, align, and duplicate handwriting and photos
- Text boxes, tables, layers, mask tape, laser pointer, grading stamps (O, X, Star, Score)
- Strokes are saved immediately, and even if the app suddenly closes, they are restored the next time you open it
■ PDF Viewing
- Open and switch between multiple documents using document tabs like a browser; view two documents side-by-side in a wide screen
- Vertical scrolling, horizontal page turning, spread two pages; navigate page lists, table of contents, bookmarks, and links
- Add, delete, reorder, and rotate pages; blank note size, line spacing, and background color Select
■ Note Anything
- Convert and import PPT, Word, and Hangul (hwp, hwpx) files to PDF, and handle multiple files at once
- Scan documents with camera and recognize text (OCR), combine multiple photos into a single PDF
- Share originals and handwritten notes together using KEI NOTE files (.keinotes)
■ Find and Organize
- Folders within folders, colors, icons, favorites, drag-and-drop, and rearrange main menu order
- Search titles, PDF text, and handwriting all at once (Korean and English handwriting recognition)
- Trash: Stores for 30 days, Recovery Center
■ KEI AI Learning Assistant (Login)
- Engine Selection: KEI AI Lite, Smart, Pro, and KEI AI LOCAL (10 AP per session) for supported mobile phones and tablets
- Select a lasso area, this page, page range, or entire document to ask questions; read PDF text along with handwriting and highlighted sections
- Summary notes, key concepts, easy explanations, memorization Cards, 8 types of quizzes (tap to solve and grade immediately)
- Paste answers directly onto the page, mark verified sources, conversation history saved to KEI LAB account
- K-Note AI Home: An AI briefing that organizes today's studies and tasks
- Uses KEI LAB AI Points (AP)
■ Study Records & Error Notes
- Study timer & Pomodoro; records as a K-Manager study review upon completion (AI auto-fill, select engine)
- Smart Error Notes: Automatically collects OMR grading and quizzes, and reviews at intervals of 1, 3, 7, 14, and 30 days
- Learning Dashboard: Study time, consecutive study days, accuracy rate trends, frequently missed questions
■ Collaborative Writing & Community (Login)
- Invite friends by nickname to take notes together on the same document, select and view by author
- Friend list & study rankings, send messages to friends, and KEI LAB message box
- Access KEI LAB Free Board directly from the app: Bold, italic, and strikethrough formatting Editing, Attaching Photos/Files, Comment Notifications
- Checking Round Events and Winners
■ Cloud and Backup (Optional)
- When you log in with your KEI LAB account, documents, notes, folders, and bookmarks are automatically synchronized across your tablet and mobile phone.
- Use the service even without an internet connection, and upload your remaining changes once connected.
- You can choose Google Drive backup and view and download PDFs with merged notes on the KEI LAB website.
- If you are not logged in, all documents are saved only on this device.
■ Export
- Save, share, or print as a PDF with merged notes or the original PDF; save the current page as an image.
■ Customization and VIP
Banner ads are displayed on some screens of KEI NOTE to allow anyone to use it. KEI NOTE VIP allows you to use the service without ads and provides ample cloud storage space and monthly AI points. VIP members can use fingerprint/PIN document locking, toolbar design, 57 app themes grouped by color, and 64 app icons grouped by design, including 3D, glass, neon, and metal.
■ Personal Information
App usage patterns are collected only if you consent, and you can turn this off at any time in Settings. Documents and handwriting content are not sent.
It supports dark screens and can be used on tablets and phones running Android 8.0 or higher.
KEI NOTE ■ Handwriting like paper
- Standard pen, fountain pen, brush pen, marker, colored pencil, dotted line pen; 4,096 levels of pressure and sensitivity adjustment
- Highlighter that doesn't obscure text; pen presets; drawing only with the pen (finger moves the screen)
- Pause the pen to straighten lines, circles, squares, and stars
- Use the lasso tool to select, move, rotate, resize, align, and duplicate handwriting and photos
- Text boxes, tables, layers, mask tape, laser pointer, grading stamps (O, X, Star, Score)
- Strokes are saved immediately, and even if the app suddenly closes, they are restored the next time you open it
■ PDF Viewing
- Open and switch between multiple documents using document tabs like a browser; view two documents side-by-side in a wide screen
- Vertical scrolling, horizontal page turning, spread two pages; navigate page lists, table of contents, bookmarks, and links
- Add, delete, reorder, and rotate pages; blank note size, line spacing, and background color Select
■ Note Anything
- Convert and import PPT, Word, and Hangul (hwp, hwpx) files to PDF, and handle multiple files at once
- Scan documents with camera and recognize text (OCR), combine multiple photos into a single PDF
- Share originals and handwritten notes together using KEI NOTE files (.keinotes)
■ Find and Organize
- Folders within folders, colors, icons, favorites, drag-and-drop, and rearrange main menu order
- Search titles, PDF text, and handwriting all at once (Korean and English handwriting recognition)
- Trash: Stores for 30 days, Recovery Center
■ KEI AI Learning Assistant (Login)
- Engine Selection: KEI AI Lite, Smart, Pro, and KEI AI LOCAL (10 AP per session) for supported mobile phones and tablets
- Select a lasso area, this page, page range, or entire document to ask questions; read PDF text along with handwriting and highlighted sections
- Summary notes, key concepts, easy explanations, memorization Cards, 8 types of quizzes (tap to solve and grade immediately)
- Paste answers directly onto the page, mark verified sources, conversation history saved to KEI LAB account
- K-Note AI Home: An AI briefing that organizes today's studies and tasks
- Uses KEI LAB AI Points (AP)
■ Study Records & Error Notes
- Study timer & Pomodoro; records as a K-Manager study review upon completion (AI auto-fill, select engine)
- Smart Error Notes: Automatically collects OMR grading and quizzes, and reviews at intervals of 1, 3, 7, 14, and 30 days
- Learning Dashboard: Study time, consecutive study days, accuracy rate trends, frequently missed questions
■ Collaborative Writing & Community (Login)
- Invite friends by nickname to take notes together on the same document, select and view by author
- Friend list & study rankings, send messages to friends, and KEI LAB message box
- Access KEI LAB Free Board directly from the app: Bold, italic, and strikethrough formatting Editing, Attaching Photos/Files, Comment Notifications
- Checking Round Events and Winners
■ Cloud and Backup (Optional)
- When you log in with your KEI LAB account, documents, notes, folders, and bookmarks are automatically synchronized across your tablet and mobile phone.
- Use the service even without an internet connection, and upload your remaining changes once connected.
- You can choose Google Drive backup and view and download PDFs with merged notes on the KEI LAB website.
- If you are not logged in, all documents are saved only on this device.
■ Export
- Save, share, or print as a PDF with merged notes or the original PDF; save the current page as an image.
■ Customization and VIP
Banner ads are displayed on some screens of KEI NOTE to allow anyone to use it. KEI NOTE VIP allows you to use the service without ads and provides ample cloud storage space and monthly AI points. VIP members can use fingerprint/PIN document locking, toolbar design, 57 app themes grouped by color, and 64 app icons grouped by design, including 3D, glass, neon, and metal.
■ Personal Information
App usage patterns are collected only if you consent, and you can turn this off at any time in Settings. Documents and handwriting content are not sent.
It supports dark screens and can be used on tablets and phones running Android 8.0 or higher.
Write directly on PDFs with a pen, and even summarize and quizze with KEI AI. Keep track of your study records and incorrect answers in one app.
Updated on
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.
- No data shared with third partiesLearn more about how developers declare sharing
- No data collectedLearn more about how developers declare collection
- Data is encrypted in transit
- You can request that data be deleted
What’s new
• KEI 스터디랩(Beta)을 앱 안에서: 녹음·파일 올리기·전사·학습 자료 7종·자료에게 질문
• 앱에서 바로 녹음 — 화면을 끄거나 다른 앱을 써도 계속 녹음
• 템플릿 › 간호사 국가고시: 과목별 자료를 PDF 통째로 내 노트로
• 구매한 자료: 자료실에서 산 PDF 를 복사해서 필기
• 폰에서 자유게시판 글 보기 위쪽 가림 수정
• 서비스 안정화와 버그 수정
• 앱에서 바로 녹음 — 화면을 끄거나 다른 앱을 써도 계속 녹음
• 템플릿 › 간호사 국가고시: 과목별 자료를 PDF 통째로 내 노트로
• 구매한 자료: 자료실에서 산 PDF 를 복사해서 필기
• 폰에서 자유게시판 글 보기 위쪽 가림 수정
• 서비스 안정화와 버그 수정
App support
phone
Phone number
+821042518968
About the developer
김우석
woo3501@gmail.com
옥과면 대학로 128
512호
곡성군, 전라남도 57504
South Korea