Comparison

Collabora Office vs OpenDocument Reader

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Collabora Office

Create and edit documents, spreadsheets, and presentations on your mobile device. This app offers compatibility with a wide range of file formats, including Open Document and Microsoft Office. It's an open-source solution for on-the-go productivity.

Highlights
  • Text editor
  • Spreadsheet program
  • Presentation program
  • Open Document Format support
  • Microsoft Office file compatibility
  • Open Source
Features
Read full description

Collabora Office is a text editor, spreadsheet and presentation program based on LibreOffice, the world's most popular Open Source office suite — and now it's on iOS, enhancing your possibilities to work on mobile devices. This app is in active development, feedback and bug reports are very welcome. Supported files: • Open Document Format (.odt, .odp, .ods, .ots, .ott, .otp) • Microsoft Office 2007/2010/2013/2016/2019 (.docx, .pptx, .xlsx, .dotx, .xltx, .ppsx) • Microsoft Office 97/2000/XP/2003 (.doc, .ppt, .xls, .dot, .xlt, .pps) Report issues: Use the bugtracker and attach any files that caused problems via https://col.la/iosBug . Please note that anything you enter in the bugtracker will be public. About the app: Collabora Office for iOS is based on the LibreOffice code for macOS and other platforms. This, combined with a new front-end based on Collabora Online. Credits: iOS port is mainly based on the work of Collabora engineer Tor Lillqvist, with help of Patrick Luby. Please find a detailed list of contributors in the credits: https://col.la/iosCredits License: Open Source — Mozilla Public License v2 and other

About

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.

Highlights
  • View ODT, ODS, ODP files
  • Basic document editing
  • Open from cloud storage
  • Password-protected document support
  • Keyword search and highlighting
  • Offline functionality
  • Print documents
Features
Read full description

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. 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 a typo or add a sentence with the young text editor *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.

Screenshots

Collabora Office4 screens
OpenDocument Reader4 screens

Verdict

The call

The clearest difference is rating: OpenDocument Reader at 4.5 against Collabora Office's 3.3. OpenDocument Reader also leads on ratings volume (897 vs 114). Collabora Office's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, update cadence, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

OpenDocument Reader holds the better App Store score, 4.5 against 3.3. That said, the two scores are not equally well evidenced: OpenDocument Reader has 897 ratings behind it against 114, so its average is the more settled of the two. Written reviews complicate that: 41% of Collabora Office's written reviews are positive against 31% of OpenDocument Reader's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 21, 2026 and September 22, 2026 respectively.

Scorecard5 real differences · 5 level
Collabora Office versus OpenDocument Reader: the parameters behind the verdict, then further details
ParameterCollabora OfficeOpenDocument Reader
PriceFreeFree
Rating3.3 (114 ratings)4.5 (897 ratings) — better
Positive reviews40.8% of reviews — better30.9% of reviews
Number of ratings114897 — better
Update frequencyEvery 2 monthsEvery 2 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.515.0 — better
Further details — not scored
Size320 MB9 MB
Age rating4+4+
DeveloperCollabora ProductivityStefl und Taschauer OG

Customer experience

Collabora Office

All ratings114 ratings
Positive50.0%
Neutral13.2%
Negative36.8%
Written reviews375 reviews
Positive40.8%
Neutral15.5%
Negative43.7%

OpenDocument Reader

All ratings897 ratings
Positive87.1%
Neutral5.4%
Negative7.6%
Written reviews81 reviews
Positive30.9%
Neutral7.4%
Negative61.7%

User reviews

Collabora Office

From 114 App Store ratings

What we love

  • 🚀 Excellent functionality
  • 🔒 Privacy-focused
  • 👍 Intuitive interface
  • 🚀 Seamless file compatibility
  • 👍 Useful for on-the-go editing

Room to improve

  • 🐛 Crashes and freezes
  • 🐛 Buggy scrolling and text selection
  • 🐛 Unreliable saving and file management
  • 👎 Clunky keyboard and trackpad support
  • 👎 Slow performance with larger documents

OpenDocument Reader

From 897 App Store ratings

What 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

Bugs and requests

Collabora Office

Reported bugs

4 issues
  • Unable to open password-protected documents
  • Formatting issues with imported documents
  • Inconsistent behavior when switching between apps
  • Keyboard and cursor controls not working as expected

Requested features

5 requests
  • Dark mode option
  • Improved cursor and text selection controls
  • Better integration with cloud storage services
  • More intuitive file naming and saving process
  • Enhanced spreadsheet functionality

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

In-app purchases

None

Collabora Office

No in-app purchases

None

OpenDocument Reader

No in-app purchases

Questions

Is Collabora Office free?
Collabora Office is free to download, with no in-app purchases.
Is OpenDocument Reader free?
OpenDocument Reader is free to download, with no in-app purchases.
Which has better reviews, Collabora Office or OpenDocument Reader?
OpenDocument Reader is rated higher. Collabora Office averages 3.3 out of 5 from 114 ratings, while OpenDocument Reader averages 4.5 from 897 ratings.
Do Collabora Office or OpenDocument Reader have ads?
OpenDocument Reader shows ads; Collabora Office does not.
Which is updated more often, Collabora Office or OpenDocument Reader?
Collabora Office ships an update every 2 months, and OpenDocument Reader every 2 months. Most recently, Collabora Office was updated on September 21, 2026 and OpenDocument Reader on September 22, 2026.

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