Comparison

OpenDocument Reader Pro vs PDF Hero

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

Head to head
About

OpenDocument Reader Pro

View and edit ODF files like ODT, ODS, and ODP on your mobile device. Access documents from cloud storage or your device's file explorer, and even open password-protected files. Supports a wide range of other file formats for comprehensive document management.

Highlights
  • View and edit ODT, ODS, ODP files
  • Supports LibreOffice and OpenOffice formats
  • Open files from cloud storage and other apps
  • Edit documents with basic text modifications
  • Open password-protected documents
  • Search and highlight keywords
  • Offline capability
Features
Currently charting
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. The Pro version also adds new paragraphs, text formatting such as bold, colours and sizes, and more ways to mark PDFs: underline, strike out and draw. 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 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. 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.

About

PDF Hero

Edit, create, and manage PDF documents on your mobile device. Annotate, fill forms, sign, and share files with ease. Offers advanced features like OCR and compression for enhanced document control.

Highlights
  • Create PDFs from scratch
  • Edit text and annotate documents
  • Fill and sign PDF forms
  • Convert images/documents to PDF
  • OCR for editable text
  • Compress and merge PDFs
  • Password-protect sensitive data
Features
Read full description

Looking for a convenient and easy-to-use PDF editor? View and edit PDF files on the go with PDF Hero! The app works on iPhone and iPad. PDF Hero helps you take control of your papers and run your business in the ever-changing digital world. Create and read PDFs, then annotate, edit, fill and sign forms, or share files. Manage paperwork hassle-free from anywhere – the office, remotely, or from home. There’s no need for printed copies when you can access and edit the docs you need, on the go – all in an app. Stay one step ahead when it comes to document management. CREATE & VIEW - Create PDFs from scratch. - Open and view any PDF file. - Zoom in and out while reading. - Search to find the necessary information using text search. - Read PDFs easier with Read Mode by creating bookmarks and navigating conveniently. EDIT & ANNOTATE - Edit text in your PDF files, fix typos, and correct paragraphs. - Add comments and annotations using text notes. - Write on PDFs with your finger or stylus. - Fill PDF forms. - Highlight key ideas and add shapes. - Insert images, crop, resize, or change the angle if necessary. MANAGE & STORE - Import files from your device or online storage services like iCloud and Dropbox. - Delete pages from a multi-page PDF document. - Share PDF files with or without annotations for further reading and commenting. - Print files right from your device. Level up with Premium features! PRO EDITING - Convert images and documents to PDF files. - Sign docs right on the screen of your device. - Add stamps to PDF documents. - Transform PDF files into editable text with OCR (Optical Character Recognition) technology. PRO MANAGEMENT - Compress PDFs and share them as ZIP files. - Manage PDF pages: add pages, rotate, and reorder them. - Share selected pages of a multi-page PDF file. - Merge two or more PDF pages into a single document. - Password-protect sensitive data. *To digitize printed copies and transform them into editable PDF scans, try our Scan Hero app! Subscription payments will be charged to your App Store account at confirmation of your purchase. Subscriptions will automatically renew and you will be charged unless auto-renew is turned off or unless you cancel at least 24 hours prior to the end of the current subscription or trial period. Any unused portion of a free trial period will be forfeited when you purchase a premium subscription during the free trial period. The cost of renewal depends on the Subscription Plan you choose. Subscriptions and auto-renewal may be managed by going to Account Settings after purchase or by contacting Customer Support. Privacy Policy: https://support.bendingspoons.com/privacy.html?app=1512973255 Terms of Service: https://support.bendingspoons.com/tos.html?app=1512973255 Got questions or suggestions? Please don’t hesitate to email us at pdfhero@bendingspoons.com

Screenshots

OpenDocument Reader Pro4 screens
PDF Hero4 screens

Verdict

The call

The clearest difference is price: PDF Hero at Free against OpenDocument Reader Pro's $3.99. PDF Hero also leads on rating (4.6 vs 4.2) and ratings volume (10K vs 292). OpenDocument Reader Pro's advantage is in-app purchases (none vs 14). On review sentiment, ads, chart position 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

PDF Hero is free to download; OpenDocument Reader Pro costs $3.99 up front. PDF Hero sells 12 in-app purchases, starting at $3.99 per 7 days. OpenDocument Reader Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

PDF Hero holds the better App Store score, 4.6 against 4.2. That said, the two scores are not equally well evidenced: PDF Hero has 10K ratings behind it against 292, so its average is the more settled of the two. Written reviews complicate that: 20% of OpenDocument Reader Pro's written reviews are positive against 18% of PDF Hero's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

OpenDocument Reader Pro ships an update every 2 months, PDF Hero every 3 weeks. The most recent releases landed on September 25, 2026 and September 28, 2026 respectively.

Scorecard6 real differences · 5 level
OpenDocument Reader Pro versus PDF Hero: the parameters behind the verdict, then further details
ParameterOpenDocument Reader ProPDF Hero
Price$3.99Free — better
Rating4.2 (292 ratings)4.6 (10K ratings) — better
Positive reviews19.5% of reviews — better17.8% of reviews
Number of ratings29210K — better
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFree with in-app purchases
Best chart rank#74 — better#188
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.014.0 — better
Further details — not scored
Size6 MB536 MB
Age rating4+4+
DeveloperStefl und Taschauer OGMosaic S.r.l.

Customer experience

OpenDocument Reader Pro

All ratings292 ratings
Positive78.8%
Neutral5.8%
Negative15.4%
Written reviews82 reviews
Positive19.5%
Neutral6.1%
Negative74.4%

PDF Hero

All ratings10,328 ratings
Positive90.4%
Neutral2.4%
Negative7.1%
Written reviews247 reviews
Positive17.8%
Neutral5.3%
Negative76.9%

User reviews

OpenDocument Reader Pro

From 292 App Store ratings

What we love

  • 👍 Can open documents
  • 👍 Can view documents
  • 👍 Imports OpenOffice beautifully
  • 👍 Useful for quick edits
  • 👍 Offline functionality

Room to improve

  • 🐛 Cannot edit documents
  • 🐛 Formatting issues
  • 🐛 Text illegible/overlapping
  • 🐛 App crashes
  • 🐛 Does not save changes

PDF Hero

From 10K App Store ratings

What we love

  • 💡 Useful PDF editing features
  • 🚀 Easy to use
  • 👍 Signature functionality

Room to improve

  • 🐛 Frequent crashes and malfunctions
  • 🐛 Inconsistent behavior and glitches
  • 🔋 High subscription cost
  • 🔒 Difficult to cancel subscription
  • 👎 Poor text editing capabilities

Bugs and requests

OpenDocument Reader Pro

Reported bugs

24 issues
  • App crashes when saving
  • App crashes when opening files
  • App crashes when typing
  • App crashes when searching
  • Changes not saved
Show 19 more
  • Formatting not retained
  • Text overlapping
  • Files not opening
  • Images not loading
  • Cyrillic characters displayed incorrectly
  • Documents corrupted upon opening
  • Cannot edit PDF files
  • Only first sheet of multi-sheet files visible
  • Incompatible with VoiceOver
  • Documents displayed as plain text
  • Cannot create new documents
  • Cannot extend existing documents
  • Search function not working
  • App crashes when trying to edit blank page
  • File saving issues after iPadOS 14 upgrade
  • ODG draw documents only show first page
  • Cannot edit audio files
  • App crashes when opening .xlsx file
  • No editing functionality for VoiceOver users

Requested features

9 requests
  • Add search function
  • Add ability to create new documents
  • Improve editing functionality
  • Fix formatting issues
  • Improve handling of large files
Show 4 more
  • Support for more file types
  • Improve compatibility with VoiceOver
  • Add dark mode
  • Add advanced analytics dashboard

PDF Hero

Reported bugs

4 issues
  • Text disappearing or jumping around during editing
  • Inability to save or transfer edited documents
  • App crashing or freezing during use
  • Incorrect rendering of PDF content

Requested features

4 requests
  • Improved text editing and manipulation
  • Better file management and organization
  • Seamless integration with other apps
  • Clearer subscription and cancellation policies

In-app purchases

None

OpenDocument Reader Pro

No in-app purchases

12 purchases

PDF Hero

Subscriptions12
  • Weekly with free trial7 Days trial$3.997 Days
  • Weekly Subscription$3.997 Days
  • Weekly Premium$5.997 Days
Show 9 more
  • Weekly Premium with Free Trial7 Days trial$5.997 Days
  • PDF Hero Premium 1 Month$9.991 Month
  • PDF Hero Premium 1 Month3 Days trial$10.991 Month
  • PDF Hero Premium 1 Month3 Days trial2 variants$11.991 Month
  • Convert & Merge PDF Documents3 Days trial$14.991 Month
  • PDF Hero Premium 3 Months3 Days trial$19.993 Months
  • PDF Hero Premium 1 Year3 Days trial$34.991 Year
  • PDF Hero Premium 1 Year3 Days trial$89.991 Year
  • PDF Hero Premium 1 Year3 Days trial$99.991 Year

Questions

Is OpenDocument Reader Pro free?
OpenDocument Reader Pro costs $3.99, with no in-app purchases.
Is PDF Hero free?
PDF Hero is free to download, with in-app purchases available.
Which has better reviews, OpenDocument Reader Pro or PDF Hero?
PDF Hero is rated higher. OpenDocument Reader Pro averages 4.2 out of 5 from 292 ratings, while PDF Hero averages 4.6 from 10K ratings.
Do OpenDocument Reader Pro or PDF Hero have ads?
Neither OpenDocument Reader Pro nor PDF Hero shows ads.
Which is updated more often, OpenDocument Reader Pro or PDF Hero?
OpenDocument Reader Pro ships an update every 2 months, and PDF Hero every 3 weeks. Most recently, OpenDocument Reader Pro was updated on September 25, 2026 and PDF Hero on September 28, 2026.
Which is more popular, OpenDocument Reader Pro or PDF Hero?
OpenDocument Reader Pro currently peaks at #74 in the App Store charts, and PDF Hero at #188. Chart position reflects recent download velocity rather than total install base.

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