OpenDocument Reader vs UPDF
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OpenDocument Reader
View and edit ODT, ODS, and ODP files on your mobile device. Seamlessly open documents from cloud storage or your device's file explorer, with support for password-protected files and keyword searching. Enjoy offline access and basic editing capabilities.
- View ODT, ODS, ODP files
- Basic document editing
- Open from cloud storage
- Password-protected document support
- Keyword search and highlighting
- Offline functionality
- Print documents
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Read documents created using LibreOffice or OpenOffice on the go, wherever you keep them, with the Document Reader! The file reader lets you open files like ODF (Open Document Format) documents created using LibreOffice or OpenOffice wherever you are. In the bus on your way to school wanting to look at your notes before the big exam? No problem! With the Document Reader you can open files wherever you like and read & search through your documents to go in a clean and simple way. There is a text editor in here as well, for the last typo before a document goes out. It is a young one and it does not reach every document yet, so the reader is what this app is for. New paragraphs, text and cell formatting and more ways to mark PDFs come with OpenDocument Reader Pro. You can open files from ODF (ODT, ODS & many more) that you have created with Libre Office or OpenOffice also from within other apps. Supported apps include GMail, Google Drive, iCloud, OneDrive, Nextcloud, Box.net, Dropbox and lots of others! Or use our integrated file explorer instead to open files on your device. THE ALL IN ONE DOCUMENT READER *open files with ODF: ODT (writer), ODS (calc), ODP and ODG without a hassle *fix typos, edit and colour spreadsheet cells, and highlight text in documents and PDFs *securely open password-protected documents *search for keywords in your ODT (writer), ODS (calc) or ODG and highlight them *print documents if your device is connected to a printer *read your documents in fullscreen to avoid distractions *select and copy text out of your documents *enjoy your documents even without internet connectivity - fully offline capable *read out aloud your documents using Text-To-Speech technology DOCUMENTS TO GO - WHEREVER YOU LIKE In addition to that, the document reader aims to support various other file formats as well as possible: - Portable Document Format (PDF) - Archives: ZIP - Images: JPG, JPEG, GIF, PNG, WEBP, TIFF, BMP, SVG, etc - Videos: MP4, WEBM, etc - Audio: MP3, OGG, etc - Text files: CSV, TXT, HTML, MD, RTF - Microsoft Office (OOXML): Word (DOC, DOCX), Excel (XLS, XLSX), PowerPoint (PPT, PPTX) - Apple iWork: Pages, Numbers, Keynote - Libre Office and Open Office ODF (ODT, ODS, ODP, ODG, FODT, FODS, FODP, FODG) This app is open source. We are not affiliated with OpenOffice, LibreOffice or similar. Made in Austria. Ads are shown in order to support the development of this app. They are free to remove temporarily via the in-app menu. We highly appreciate all kinds of feedback via email. ODF is the format used by office suites like Open Office and Libre Office. Text documents (Writer, ODT), as well as spreadsheets (Calc, ODS) and also presentations (Impress, ODP) are supported, including complex formatting and embedded images. Graphs are no problem either. If you want to secure your data you can even open password-protected documents. Other applications that are using this format are LibreOffice, OpenOffice, NeoOffice, StarOffice, Go-oo, IBM Workplace, IBM Lotus Symphony, ChinaOffice, AndrOpen Office, Co-Create Office, EuroOffice, KaiOffice, Jambo OpenOffice, MagyarOffice, MultiMedia Office, MYOffice, NextOffice, OfficeOne, OfficeTLE, OOo4Kids, OpenOfficePL, OpenOfficeT7, OxOffice, OxygenOffice, Pladao Office, PlusOffice, RedOffice, RomanianOffice, SunShine Office, ThizOffice, UP Office, White Label Office, WPS Office Storm, Libre Office, Collabora Office and 602Office.
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
OpenDocument Reader and UPDF both sit at 4.5 stars, but that hides the real split: 84% of UPDF's written reviews are positive against 30% of OpenDocument Reader's. UPDF also leads on ads (none vs shown). OpenDocument Reader's advantage is in-app purchases (none vs 13). 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 13 in-app purchases, starting at $9.99 per month. OpenDocument Reader asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.5 for OpenDocument Reader against 4.6 for UPDF. Both are backed by a comparable volume of ratings — 910 and 699 respectively. Written reviews are what separate them: 30% of OpenDocument Reader's written reviews are positive against 84% of UPDF's.
Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.
| Parameter | OpenDocument Reader | UPDF |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (910 ratings) | 4.6 (699 ratings) — better |
| Positive reviews | 30.1% of reviews | 84.3% of reviews — better |
| Number of ratings | 910 — better | 699 |
| Update frequency | Fortnightly | Fortnightly |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 12 MB | 195 MB |
| Age rating | 4+ | 4+ |
| Developer | Stefl und Taschauer OG | Superace Software Technology Co., Ltd. |
Customer experience
OpenDocument Reader
UPDF
User reviews
OpenDocument Reader
From 910 App Store ratingsWhat we love
- 👍 Easy to use
- 🚀 Fast file opening
- 💡 Good ODT reader
Room to improve
- 🐛 Corrupted files upon editing
- 🐛 Presentation issues with formatting and features
- 🐛 Inability to edit spreadsheets properly
UPDF
From 699 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
OpenDocument Reader
Reported bugs
3 issues- Corrupted files
- Formatting issues
- Crashes and app closing issues
Requested features
3 requests- Dark mode option
- Better spreadsheet editing capabilities
- Improved file format compatibility
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
OpenDocument Reader
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
- 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









