UPDF vs AI Note Taker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
UPDF
This app is a powerful PDF editor for mobile devices, offering AI-powered features for summarizing, translating, and chatting with documents. It allows users to read, edit, annotate, convert, and sign PDFs, as well as scan paper documents into editable files. Manage all your PDF files and protect them with security features.
- AI-powered summarization and translation
- Edit text, images, and watermarks in PDFs
- Annotate with various markup tools
- Convert PDFs to Word, Excel, and PPT
- Scan documents to editable PDFs
- Sign and fill PDF forms
- Organize and protect PDF files
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UPDF for iOS is an AI-powered PDF editor for iPhone and iPad. Read, edit, annotate, convert, sign, and AI chat with your PDFs — all from your iOS device. Summarize lengthy documents, translate full PDFs, scan paper to PDF, and manage all your files in one place. Amazing features of UPDF for iOS: Edit PDF - Edit text in PDF (change color, font style, font size) - Edit images in PDF (rotate, extract, replace, and crop images) - Edit watermark in PDF (add, edit, delete and favor watermark) - Edit links in PDF (add, edit, copy, and delete) AI Assistant - Summarize, translate, explain, and rephrase lengthy PDFs in minutes. - Engage in a chat with UPDF AI and ask it any questions you have. - Summarize or translate PDF by pages. - Export conversations to Markdown or TXT files. - NEW AI Bookmark Agent: Auto-generate bookmarks and get instant section summaries for any PDF. - NEW AI Semantic Search: Search your PDF by meaning, not just exact words. - NEW AI Editing Suite: Rewrite, refine tone, or correct grammar directly. Read PDF - Flexible reading: vertical and horizontal scrolling, single page or two-page view - Dark mode to protect your eyes - Add and manage bookmarks with AI Bookmark Agent's help - Search text in PDF - Present PDF as a slideshow - Text-to-speech support Annotate PDF - Annotate PDFs using markup tools: pencil, highlight, underline, strikethrough, squiggly line - Add text boxes, text comments, callouts, sticky notes - Add shapes, stamps, and stickers to PDFs - Free-hand drawing on PDF pages OCR PDF - Convert scanned documents and images into searchable and editable PDFs - Recognize text in 38 languages Scan to PDF - Scan physical documents to PDF with your camera - Scan ID cards onto one page - Crop, rotate, and filter scanned images Convert PDF - Convert PDF to Word, Excel, PPT, and images Organize PDF Pages - Insert, replace, extract, split, rotate, remove, and reorder pages in PDFs - Merge multiple PDFs into one file - Copy, paste, and share specific pages in a PDF Sign PDF & Fill PDF Form - Create handwritten signatures - Import and add image signatures - Fill PDF form and add e-signatures - Save signatures to cloud for cross-platform use Create PDF - Create PDF with blank, lined, dotted, grid, and graph papers - Combine multiple files/images into one PDF Protect PDF - Password-protect PDFs to restrict opening, editing, and printing - Add or remove watermarks - Add digital signatures Manage Files - Upload, create, rename, move, copy, duplicate, and organize files or folders - Unzip files by simply tapping .zip files - Search for files - Supports two-finger multiple selections and operations - Move files or folders to trash, and find deleted items in the trash - Protect PDF files with a password or unlock protected PDF files - Compress one or multiple files into a zip file Security Space - Protect your privacy by moving files or folders to Security Space - Enable Face ID & Passcode to access your Security Space Import File - Import files from Photos albums - Import files from the Files App - Transfer files from a computer over the same Wi-Fi View files in All Formats - Browse dozens of different file formats including PDFs, Office documents (.doc, .docx, .ppt, .pptx, .xls, .xlsx), Pages, Keynotes, and Numbers with a single app - Open other formats such as text, HTML, XML, Web Archive, Images (JPG, JPEG, GIF, PNG, TIFF, SVG, BMP), video, audio *** Pro Features of In-App Purchase *** - Use UPDF across all platforms including desktops and mobiles - Free Users will get 1 GB of Cloud Storage; Paid users will get 10 GB of Cloud Storage for free - Advanced PDF features such as Convert PDF with OCR, batch process, etc. are available on the desktop - Unlimited use of Scan to PDF (Free trial only scans up to 5 pages) - Unlimited use of Security Space (Trial version stores up to 10 items) - Secure App with passcode/TouchID/FaceID Need help? Email us at support@superace.com
AI Note Taker
Instantly summarize and chat with documents, PDFs, and websites in over 20 languages. This AI-powered assistant extracts key information, scans text from images, and offers privacy-first processing with no registration required.
- AI-powered document summarization
- Chat with PDFs, documents, and images
- Document scanning with OCR
- Multilingual summarization and translation
- Privacy-first processing
- Export summaries to PDF
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SummarizeDoc: AI Summarize & Chat – AI PDF Chat & Document Assistant SummarizeDoc is the fastest AI PDF summarizer, document summarizer, and chat assistant. Instantly summarize, read, and chat with PDFs, Google Docs, and websites in 20+ languages. Save hours every week with AI-powered summaries, TLDR insights, and interactive document chats. Stop reading. Start understanding! AI Summarizer & Chat: - Generate AI-powered summaries and chat with documents and content from: * PDF summary * Document summary (DOC/DOCX/RTF/TXT) * Image summary and extracts text from photos and handwriting using camera * Websites and web links summary * Google Docs and Google Drive summary - Extract key ideas, topics, and conclusions automatically - Export summaries and chats to PDF for sharing Document Scanner & OCR: - Scan books, contracts, receipts, or notes with camera - Auto edge detection for perfect scans - OCR extracts text from photos and handwriting Multilingual Summarizer: - AI summarize and translate in 20+ languages - Perfect for students, professionals, and researchers - Read academic papers, contracts, or websites in any language Chat with PDF, DOC, or Image: - PDF AI chat remembers context across multiple chats - Continue conversations anytime - Stop reading full documents - get answers instantly - Works with document summary, pdf summary, ai pdf chat, chat with pdf, web summarizer, summarize google doc, summarize website, essay Privacy-First AI App: - No registration required - No file storage - all processing on your device - Files deleted automatically after summaries - 100% private and secure Key Features: - AI PDF summarizer & document reader (ai pdf summarizer, pdf summary, document summary) - Chat with PDF, DOC, or scanned images (chat with document and images, ai pdf chat) - OCR scanner with camera support - Multilingual AI summarize & translation (ai summarize, summarize Google Doc, website and links summarize, PDF/Images/Doc summarize) - Persistent chat memory per file - Export summaries & chats to PDF Perfect for Everyone: - Students & Education: Summarize textbooks, notes, essays, and research papers. Chat with guides and study materials. - Professionals & Business: Scan contracts, reports, and invoices. Extract key points quickly and save hours of review time. - Researchers & Academics: Process research papers and websites. Translate and summarize foreign documents instantly. - Anyone Who Reads: Ask questions, get instant insights, and summarize websites, documents, and PDFs. Download SummarizeDoc: AI Summarize & Chat today — your all-in-one AI PDF chat, document summarizer, and essay assistant. Start your FREE 3-day trial and experience the fastest way to read, summarize, and chat with documents. Questions? Visit: https://www.notion.so/SummarizeDoc-Support-31ea1cdde32880d7aef7dc541fafc841? Terms of use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.notion.so/Privacy-Policy-2dfa1cdde328806b9dece29aaddd9dd3?
Screenshots
Verdict
The clearest difference is rating: AI Note Taker at 5.0 against UPDF's 4.6. AI Note Taker also leads on review sentiment (100% vs 84%). UPDF's advantage is ratings volume (699 vs 4). On price, update cadence, ads and in-app purchases 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. UPDF sells 13 in-app purchases, starting at $9.99 per month and AI Note Taker sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.
AI Note Taker holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: UPDF has 699 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 84% of UPDF's written reviews are positive against 100% of AI Note Taker's.
UPDF ships an update fortnightly, AI Note Taker weekly. The most recent releases landed on October 30, 2026 and September 26, 2026 respectively.
| Parameter | UPDF | AI Note Taker |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (699 ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 84.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 699 — better | 4 |
| Update frequency | Fortnightly | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 195 MB | 101 MB |
| Age rating | 4+ | 9+ |
| Developer | Superace Software Technology Co., Ltd. | Karen Gyulgyulyan |
Customer experience
UPDF
AI Note Taker
Bugs and requests
UPDF
Reported bugs
3 issues- Inability to edit text directly in PDF files
- Inconsistent behavior when switching between devices
- Occasional loss of editing progress when app is minimized
Requested features
5 requests- Add password protection for PDF files
- Improve file organization and folder management
- Implement keyboard shortcuts for power users
- Expand OCR capabilities and text extraction
- Allow custom signature and stamp imports
AI Note Taker
Not enough reviews yet to summarise bugs or requests.
In-app purchases
UPDF
- Monthly Subscription$9.991 Month
- UPDF AI Unlimited$15.001 Month
- UPDF AI Standard$15.001 Month
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- UPDF Pro + AI Unlimited$18.991 Month
- Quarterly Subscription$19.003 Months
- Annual Subscription$49.991 Year
- UPDF AI Standard$69.001 Year
- UPDF AI Unlimited$79.001 Year
- UPDF Pro + AI Standard$98.991 Year
- UPDF Pro + AI Unlimited$118.991 Year
- Perpetual License$79.99
- Perpetual License$128.99
- UPDF & AI Add-on for iOS$148.99
AI Note Taker
- Weekly tariff plan3 Days trial$4.997 Days
- Monthly Tariff3 Days trial$7.991 Month
- Annual tariff$19.991 Year









