Comparison

AO Office Pro vs eM Client

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

Head to head
About

AO Office Pro

This app provides a comprehensive office suite for mobile devices, enabling users to view, edit, import, and export a wide range of document types. It includes tools for word processing, spreadsheets, presentations, drawing, and mathematical equations, mirroring the functionality of desktop office software.

Highlights
  • View, edit, import, and export documents
  • Full OpenOffice/LibreOffice functionality
  • Writer, Calc, Impress, Draw, and Math components
  • PDF export and import
  • Cloud storage integration (Dropbox, Google Drive, etc.)
  • Support for numerous file formats
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 / NAS / WebDAV - Support for Audio and Video - Support for recovering the unsaved work - Support for modern encryption ■ 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) - 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

About

eM Client

This app unifies email, calendar, tasks, contacts, and notes into a single, AI-enhanced platform. It offers advanced features typically found on desktop, including instant message translation and robust encryption, for seamless management of multiple accounts on your iPhone and iPad.

Highlights
  • AI-enhanced email drafting and replies
  • Unified inbox for email, calendar, tasks, contacts, and notes
  • Instant message translation
  • PGP and S/MIME encryption
  • Quick import from desktop app
  • Mail-tracking pixel detection
  • Snooze and Undo Send features
Read full description

These features include: • Super easy setup including quick import from the desktop app via QR code • AI Support for replies and email drafting • Emails, calendars, tasks, contacts and notes all in one place • Favorite, Global, and search folders to easily manage multiple accounts • Instant message translation • PGP and S/MIME encryption • Tags and Gmail labels support to sort and color-code your messages • Signatures you can choose from and assign to your accounts • QuickText: snippets of text you can quickly insert into your emails • Templates • Messages grouped into conversations • Advanced privacy options • Mail-Tracking pixel detection • Snooze • Watch for reply • Undo Send • Password protection • Online meetings integration • Cloud storage providers integration • Mobile device management (MDM) support and more

Screenshots

AO Office Pro4 screens
eM Client4 screens

Verdict

The call

The clearest difference is price: eM Client at Free against AO Office Pro's $19.99. eM Client also leads on update cadence (weekly vs every 6 weeks). AO Office Pro's advantage is rating (4.2 vs 3.7) and ratings volume (164 vs 42). On review sentiment, ads, 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

eM Client is free to download; AO Office Pro costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

AO Office Pro holds the better App Store score, 4.2 against 3.7. Both are backed by a comparable volume of ratings — 164 and 42 respectively. Written reviews point the same way: 51% of AO Office Pro's written reviews are positive against 49% of eM Client's.

UpkeepUpdate frequency

AO Office Pro ships an update every 6 weeks, eM Client weekly. The most recent releases landed on September 23, 2026 and September 22, 2026 respectively.

Scorecard6 real differences · 4 level
AO Office Pro versus eM Client: the parameters behind the verdict, then further details
ParameterAO Office ProeM Client
Price$19.99Free — better
Rating4.2 (164 ratings) — better3.7 (42 ratings)
Positive reviews51.1% of reviews — better48.6% of reviews
Number of ratings164 — better42
Update frequencyEvery 6 weeksWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size245 MB124 MB
Age rating4+4+
DeveloperAkikazu YoshikawaeM Client

Customer experience

AO Office Pro

All ratings164 ratings
Positive78.7%
Neutral10.4%
Negative11.0%
Written reviews90 reviews
Positive51.1%
Neutral11.1%
Negative37.8%

eM Client

All ratings42 ratings
Positive61.9%
Neutral11.9%
Negative26.2%
Written reviews348 reviews
Positive48.6%
Neutral17.8%
Negative33.6%

Bugs and requests

AO Office Pro

Not enough reviews yet to summarise bugs or requests.

eM Client

Reported bugs

4 issues
  • Emails not sending immediately
  • Drafts not visible or editable
  • Inconsistent behavior when switching between folders
  • Trouble signing in to multiple Google accounts

Requested features

6 requests
  • Calendar integration
  • Improved background refresh and sync
  • Custom notification sounds
  • Ability to sort emails by sender
  • More customization options
Show 1 more
  • Actions from notifications (archive, mark as read, etc.)

In-app purchases

None

AO Office Pro

No in-app purchases

None

eM Client

No in-app purchases

Questions

Is AO Office Pro free?
AO Office Pro costs $19.99, with no in-app purchases.
Is eM Client free?
eM Client is free to download, with no in-app purchases.
Which has better reviews, AO Office Pro or eM Client?
AO Office Pro is rated higher. AO Office Pro averages 4.2 out of 5 from 164 ratings, while eM Client averages 3.7 from 42 ratings.
Do AO Office Pro or eM Client have ads?
Neither AO Office Pro nor eM Client shows ads.
Which is updated more often, AO Office Pro or eM Client?
AO Office Pro ships an update every 6 weeks, and eM Client weekly. Most recently, AO Office Pro was updated on September 23, 2026 and eM Client on September 22, 2026.

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