Comparison

PDF Reader vs AO Office

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

Head to head
About

PDF Reader

This app offers a superior PDF reading experience with its innovative Liquid Mode, which optimizes documents for mobile screens. It also provides robust tools for annotating, signing, managing, and sharing your PDF files, catering to both work and study needs.

Highlights
  • Liquid Mode for optimized mobile reading
  • Annotation tools (pencil, text, highlighting)
  • Handwritten signature insertion
  • File management (move, merge, copy, delete)
  • Cloud service integration (Wondershare, iCloud)
  • Create blank PDFs and folders
Features
Read full description

PDFelement - PDF Reader is a PDF reader using the latest technology. The newly connected Liquid Mode function allows you to enjoy the best reading experience. In addition, there are various annotation tools, file management, signature, Various functions such as cloud services can meet your PDF needs in work and study. PDF VIEWER • Liquid Mode gives you the best PDF reading experience • Star files to find them quickly • Easily locate recently accessed files in the "Recent" list. • Enter the page number to navigate to the desired page for viewing LIQUID MODE • Get the best PDF Reading experience with Liquid Mode • PDF document fully fits the mobile phone screen, no need to zoom in and out repeatedly. • Easily adjust brightness, font size,style, and spacing. ANNOTATE • Using Pencil to annotate like writing on the paper • Add text annotations, freely modify the text and background, border colors, choose the appropriate font and font size. • Supports many annotating tools like highlighting, underlining, squiggly lines, or strikethroughs. MANAGE • Move, merge, copy or delete files SIGNATURE • Enables handwritten signatures to be inserted anywhere within the document, while also offering the ability to zoom in and out for greater flexibility. • Built-in commonly used stamps CREATE • Quickly create completely blank PDF documents • Creat blank folders. SHARE • Sharing document content with others is just a click away with capture feature. • Select sentence(s) or pragraph(s) to share CLOUD SERVICE • PDF Reader supports uploading or downloading docs via computer, Wondershare document cloud and iCloud. Please note that this app only supports editing native PDF files. It does not support editing scanned or raster PDF. If you find you cannot edit text in PDF, please check if it is scanned PDF. Thank you! ---------------------------------------------------------------------------------------- Need HELP? Please contact us! We'll feedback to you ASAP. Email: pdfelement@wondershare.com Support Center: http://support.wondershare.com Forum: http://forum.pdf.wondershare.com Official Website: https://pdf.wondershare.com If you think this App helps you, your positive review in the App Store would be much appreciated.

About

AO Office

This app provides a comprehensive office suite for mobile devices, allowing users to view, edit, import, and export a wide range of document types. It includes word processing, spreadsheet, presentation, drawing, and equation editing capabilities, mirroring the functionality of desktop office software.

Highlights
  • View, edit, import, and export documents
  • Word processor, spreadsheet, presentation tools
  • PDF export and import
  • Support for extensive file formats
  • Cloud storage integration
  • Recover unsaved work
Features
Read full description

AO Office is the world's first porting of OpenOffice for iOS and it's a powerful and complete office suite for OpenOffice / LibreOffice documents. You can view, edit, import, and export PDF, Word, Excel & PowerPoint documents using full features of the OpenOffice in the PC version. AO Office has 5 components: Writer: a word processor you can use for anything from writing a quick letter to producing an entire book. Calc: a powerful spreadsheet with all the tools you need to calculate, analyze, and present your data in numerical reports or graphics. Impress: the fastest, most powerful way to create effective multimedia presentations. Draw: lets you produce everything from simple diagrams to dynamic 3D illustrations. Math: lets you create mathematical equations with a graphic user interface or by directly typing your formulas into the equation editor. * AO Office is a forked project from the Apache OpenOffice project. AO Office is not affiliated with the Apache OpenOffice and LibreOffice projects. ■ Features ■ - View / edit / import / export documents - High reproducibility for Open Document Format - Export and import documents as PDF - Formatting paragraphs - Create stylized text with special effects - Support for extensive file formats - Support for embedded object - Support for Dropbox / iCloud Drive / Google Drive / OneDrive / Box - Support for NAS / WebDAV (Paid version only) - Support for Audio and Video - Support for recovering the unsaved work - Support for modern encryption - Support for Markdown documents ■ Supported File Formats ■ AO Office can open and save to: - Microsoft Word (DOC / DOT / RTF) - Microsoft Word 2007 (DOCX / DOTX / DOCM) - Microsoft Excel (XLS / XLT) - Microsoft Excel 2007 (XLSX / XLTX / XLSM) - Microsoft PowerPoint (PPT / POT) - Microsoft PowerPoint 2007 (PPTX / POTX / PPTM) - OpenDocument (ODT / ODS / ODP / ODG / ODF) - Portable Document Format (PDF) - OpenOffice.org1.0 / StarOffice6.0 (SXW / SXC / SXD / SXI / SXG / SXM) - Text (TXT / CSV / XML) - HyperText Markup Language (HTML) - Markdown (MD / MARKDOWN) - Adobe Photoshop (PSD) - Scalable Vector Graphics (SVG) - Windows Metafile (EMF / WMF) - Tagged Image File Format (TIFF) - Data Interchange Format (DIF) - SYLK (SLK) - Portable Anymap Format (PBM / PGM / PPM) - OS/2 Metafile (MET) - Sun Raster Image (RAS) - Mac Pict (PCT) - X PixMap (XPM) - StarView Metafile (SVM) AO Office can open: - WordPerfect Document (WPD) - AutoCAD (DXF) - T602 Document (602) - Computer Graphics Metafile (CGM) - Truevision Targa (TGA) - X Bitmap (XBM) - Zsoft Paintbrush (PCX) - Kodak Photo CD (PCD) AO Office can save to: - PlaceWare (PWP) - Macromedia Flash (SWF) - JPG / GIF / PNG / BMP ■ Gesture Assignments ■ - Hard Press or 2 Finger Tap = Context Menu - Pinch In & Out = Zoom In & Out - Drag = Scrolling - Drag with Hard Press or 2 Finger Tap = Drag & Drop ■ Limitations ■ - Not supported for macro ■ Contact Us ■ Email: support-ios@aooffice.app Twitter: @office700 The paid version includes the following functions. · Access to cloud storages · Printing - Export as PDF · Other useful functions

Screenshots

PDF Reader4 screens
AO Office4 screens

Verdict

The call

PDF Reader and AO Office both sit at 4.3 stars, but that hides the real split: 77% of PDF Reader's written reviews are positive against 39% of AO Office's. PDF Reader also leads on in-app purchases (none vs 1) and ads (none vs shown). AO Office's advantage is iOS requirement (13 vs 15.0). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. AO Office sells 1 one-off in-app purchase. PDF Reader asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.3 for PDF Reader against 4.3 for AO Office. Both are backed by a comparable volume of ratings — 3.9K and 1.5K respectively. Written reviews are what separate them: 77% of PDF Reader's written reviews are positive against 39% of AO Office's.

UpkeepUpdate frequency

PDF Reader ships an update every 2 months, AO Office every 5 weeks. The most recent releases landed on October 21, 2026 and October 23, 2026 respectively.

Scorecard5 real differences · 5 level
PDF Reader versus AO Office: the parameters behind the verdict, then further details
ParameterPDF ReaderAO Office
PriceFreeFree
Rating4.3 (3.9K ratings) — better4.3 (1.5K ratings)
Positive reviews76.7% of reviews — better39.3% of reviews
Number of ratings3.9K — better1.5K
Update frequencyEvery 2 monthsEvery 5 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS15.013 — better
Further details — not scored
Size173 MB240 MB
Age rating4+4+
DeveloperWondershare Technology (Hunan) Co.,Ltd.Akikazu Yoshikawa

Customer experience

PDF Reader

All ratings3,923 ratings
Positive83.1%
Neutral3.2%
Negative13.7%
Written reviews1,582 reviews
Positive76.7%
Neutral6.1%
Negative17.2%

AO Office

All ratings1,512 ratings
Positive83.3%
Neutral5.0%
Negative11.6%
Written reviews290 reviews
Positive39.3%
Neutral14.5%
Negative46.2%

Bugs and requests

PDF Reader

Reported bugs

4 issues
  • Text boxes appearing randomly
  • Inability to select/edit text in some PDFs
  • Scrolling issues and page loading delays
  • Incompatibility with certain PDF formats

Requested features

5 requests
  • Ability to edit text formatting (font, size, color)
  • Support for multiple open documents
  • Improved Apple Pencil integration
  • Bookmark/favorite feature for frequently used PDFs
  • Expanded cloud storage integration (OneDrive, Google Drive, etc.)

AO Office

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

PDF Reader

No in-app purchases

1 purchases

AO Office

One-time1
  • Professional Version$19.99

Questions

Is PDF Reader free?
PDF Reader is free to download, with no in-app purchases.
Is AO Office free?
AO Office is free to download, with in-app purchases available.
Which has better reviews, PDF Reader or AO Office?
PDF Reader is rated higher. PDF Reader averages 4.3 out of 5 from 3.9K ratings, while AO Office averages 4.3 from 1.5K ratings.
Do PDF Reader or AO Office have ads?
AO Office shows ads; PDF Reader does not.
Which is updated more often, PDF Reader or AO Office?
PDF Reader ships an update every 2 months, and AO Office every 5 weeks. Most recently, PDF Reader was updated on October 21, 2026 and AO Office on October 23, 2026.

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