Lumin vs UPDF
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lumin
Edit, share, and collaborate on PDF documents in the cloud. This app offers a suite of tools for annotating, organizing, and signing PDFs, with seamless integration for cloud storage and real-time collaboration.
- Seamless document management
- Cloud integration and auto-save
- Versatile editing and annotation tools
- Document organization and conversion
- Pre-designed templates
- Real-time collaboration
- eSignatures and form filling
- Scanning to PDF
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Lumin for iOS allows you to edit and sync to your Google documents in seconds. Collaborate with colleagues in real-time with a diverse set of editing tools. Lumin auto-saves your changes and syncs them to all your devices. Connect your Google account and stay on top of your documents. You can effortlessly view and share files with anybody via email or shareable links. TRUSTED BY MILLIONS Join over 100 million Lumin users worldwide who use our app to edit, share, and collaborate in the cloud. From note-taking and project management to client onboarding and legal document review, Lumin empowers you across industries. KEY FEATURES - Seamless document management: Import from your favorite storage (Dropbox, Google Drive, OneDrive), edit, and share PDFs effortlessly. - Cloud integration: Automatically save changes and sync across devices. - Versatile editing tools: Highlight, annotate, draw on PDFs and more. - Document organization: Organize, extract pages, merge files, convert to/from PDF,... - Pre-designed templates: Choose from various templates for various purposes and industries, such as real estate, education, job application, etc. - Collaboration: Share files and receive real-time notifications. - eSignatures: Sign and fill out forms with ease. - Scanning: Convert paper documents into portable PDFs. LUMIN IN THE REVIEWS “I use Lumin to mark up PDF drawings and send them to my subcontractors. In my role, time is of the essence. Lumin provides me with a tool to make collaboration and feedback easy.” – Construction site manager, US “We have been using Lumin for a little over two years, and it's been amazing. Using Lumin on-the-go and in-office allows us better turnaround time for our patients' care.” – Director of Services and Operations, US “It s very useful and handful for studying and I feel like they make good improvements with each upgrade. I use it for studying, it's cool that I can connect my university Google Drive to the Lumin account and I can edit, draw, write, highlight and add comments and they always get saved.” – Individual user “Too loud. You can open and edit texts from any device, everything is saved automatically, quickly. Access is very fast. The options for editing documents are diverse.” – Individual user Terms & conditions: https://www.luminpdf.com/terms-of-use/
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
Screenshots
Verdict
Lumin and UPDF both sit at 4.5 stars, but that hides the real split: 84% of UPDF's written reviews are positive against 32% of Lumin's. UPDF also leads on ads (none vs shown) and iOS requirement (14.0 vs 17.0). Lumin's advantage is in-app purchases (none vs 10). On price, rating, ratings volume and update cadence 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 10 in-app purchases, starting at $9.99 per month. Lumin asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.5 for Lumin against 4.6 for UPDF. Both are backed by a comparable volume of ratings — 940 and 703 respectively. Written reviews are what separate them: 32% of Lumin's written reviews are positive against 84% of UPDF's.
Lumin ships an update every 8 days, UPDF fortnightly. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.
| Parameter | Lumin | UPDF |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (940 ratings) | 4.6 (703 ratings) — better |
| Positive reviews | 32.1% of reviews | 84.3% of reviews — better |
| Number of ratings | 940 — better | 703 |
| Update frequency | Every 8 days — better | Fortnightly |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 304 MB | 195 MB |
| Age rating | 4+ | 4+ |
| Developer | Nitrolabs Limited | Superace Software Technology Co., Ltd. |
Customer experience
Lumin
UPDF
User reviews
Lumin
From 940 App Store ratingsWhat we love
- 🚀 Smooth performance
- 👍 Easy to use
- 💡 Useful annotation tools
- 🚀 Fast PDF rendering
Room to improve
- 🐛 Crashes and freezes
- 🔒 Unreliable data sync
- 💰 Expensive subscription
- 🐛 Buggy app experience
UPDF
From 703 App Store ratingsWhat we love
- 🚀 Excellent PDF editor
- 👍 Intuitive and easy to use
- 🔒 Secure file management
- 💡 Powerful features like AI-powered summarization
- 🚀 Fast and responsive performance
Room to improve
- 🐛 Occasional crashes or stability issues
- 💡 Need for more customization options
- 💡 Lack of integration with third-party cloud storage
- 🐛 Issues with handwriting recognition and annotation
Bugs and requests
Lumin
Reported bugs
4 issues- Lost work and unsaved changes
- Inability to open/access files
- Frequent login issues
- Compatibility problems on mobile
Requested features
4 requests- Offline mode support
- Split-screen functionality
- Improved highlight/annotation tools
- Better Google Drive integration
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
In-app purchases
Lumin
No 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
- Perpetual License$79.99
- UPDF & AI Add-on for iOS$148.99







