Comparison

Microsoft Copilot vs Polaris Viewer

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

Head to head
About

Microsoft Copilot

This AI-powered app helps you be more productive at work. Chat with an AI assistant to create content, manage projects, find files, and learn new concepts. It offers voice interaction and expert insights for various tasks.

Highlights
  • Chat with AI assistant
  • Voice interaction
  • Find files quickly
  • Accelerate learning
  • Generate research reports
  • Create and edit content
  • Manage projects with notebooks
Read full description

The Microsoft Copilot app is the AI built for work. Copilot helps you keep your work moving, from early ideas to finished documents, presentations, and more. Whether you're creating content, managing projects, organizing your day, or finding information, Copilot helps you get more done from one place. Copilot connects to Word, Excel, PowerPoint, Outlook, Teams, and more, bringing the files and information you use into one place. Create polished documents, presentations, and spreadsheets, summarize articles and files, draft emails, brainstorm ideas, analyze information, and get answers grounded in the work you're doing. Need help tackling a bigger task? With Cowork, Copilot can take on multi-step work and help deliver finished files and completed to-dos, so you spend less time piecing work together and more time making progress. Choose between leading AI models, selecting the one that's best suited to the task at hand. Whether you're writing, researching, planning, or analyzing, Copilot gives you the flexibility to work your way. Copilot also remembers what matters, connects to the files and information you use most, and helps you pick up where you left off. Upload Word, Excel, PowerPoint, images or PDF files directly from your phone to ask questions, generate summaries, and find the information you need. For organizations with a Microsoft 365 Copilot subscription, Work IQ gives Copilot a deep understanding of your organization's work, people, and relationships, delivering more intelligent, relevant, personalized and trusted assistance. Copilot is built on the same enterprise-grade security foundation as Microsoft 365 — your permissions, encryption, and compliance commitments already in place. Data processing and protection commitments differ by subscription; see the full security documentation for details. Availability of Microsoft Copilot features may vary. Some capabilities require specific licenses or may be disabled by your organization's administrator. See this webpage for more information on feature availability by license: https://support.microsoft.com/topic/understanding-the-different-microsoft-copilot-experiences-cfff4791-694a-4d90-9c9c-1eb3fb28e842 Please refer to Microsoft’s EULA for Terms of Service for Microsoft 365. By installing the app, you agree to these terms and conditions: https://learn.microsoft.com/legal/microsoft-365/microsoft-365-copilot-mobile-license-terms

About

Polaris Viewer

This app offers a mobile-optimized experience for viewing various document types, including Microsoft Office files, PDFs, and TXT. It provides smart document management features and supports cloud integration for easy access to your files.

Highlights
  • Mobile optimized document viewer
  • Supports Microsoft Office, PDF, TXT, Zip, CSV
  • Cloud storage integration (iCloud, Google Drive, Dropbox, etc.)
  • Smart document management
  • App lock with fingerprint, face, or password
  • Night mode and paper texture background options
Read full description

Polaris Office, selected by 100 million users across the world, provides mobile optimized document viewer at the requests of numerous users. Using compact and stable Polaris Office Viewer which takes some edit functions out and strengthens view function, quickly and easily manage all the document files such as Microsoft Office, TXT, Zip file, as well as Adobe PDF! ■ Supporting Languages ■ • English, Korean, Japanese, German, Russian, Indonesian, Brazilian Portuguese ■ Supported formats ■ • (NEW) Now we support CSV format. • Microsoft Word : DOC, DOCX • Microsoft Excel : XLS, XLSX • Microsoft Powerpoint : PPT, PPTX, PPS, PPSX • Other documents and files : PDF, TXT, ODT, Zip ■ Main functions ■ Mobile optimized document viewer : Supporting must-have functions to easily view the documents in Mobile. • Landscape mode / Portrait mode / Multi window mode • View per page, View in a row • Able to dim the screen and choose background (Providing Night mode and Paper texture) • Supporting text copy function in document Smart document managing : Supporting the functions for managing various documents more efficiently. • Able to check all the documents in My device storage & other cloud service (Supporting iCloud, Google Drive, Dropbox, OneDrive, Box, WebDAV, FTP) • Able to manage main documents separately through bookmark settings. • Support various sorting methods. (Name order / Date order / Size order etc) • Support view function per document format. • Able to search document you need through search function. • Able to use App lock function (via fingerprint, face, password) ■ Note ■ • Homepage : Polarisoffice.com • Facebook : facebook.com/polarisoffice • Youtube : youtube.com/user/infrawareinc • Inquiry : support@polarisoffice.com • Terms and Conditions and Privacy Policy : www.polarisoffice.com/privacy

Screenshots

Microsoft Copilot4 screens
Polaris Viewer4 screens

Verdict

The call

The clearest difference is update cadence: Microsoft Copilot at every 4 days against Polaris Viewer's every 3 months. Microsoft Copilot also leads on ratings volume (1.3M vs 74) and chart position (#10 vs unranked). Polaris Viewer's advantage is review sentiment (56% vs 29%) and device support (4 vs 2). On price, rating, ads and in-app purchases 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. Microsoft Copilot sells 14 in-app purchases, starting at $1.99 per month and Polaris Viewer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for Microsoft Copilot against 4.6 for Polaris Viewer. That said, the two scores are not equally well evidenced: Microsoft Copilot has 1.3M ratings behind it against 74, so its average is the more settled of the two. Written reviews are what separate them: 29% of Microsoft Copilot's written reviews are positive against 56% of Polaris Viewer's.

UpkeepUpdate frequency

Microsoft Copilot ships an update every 4 days, Polaris Viewer every 3 months. The most recent releases landed on September 27, 2026 and September 26, 2026 respectively.

Scorecard6 real differences · 5 level
Microsoft Copilot versus Polaris Viewer: the parameters behind the verdict, then further details
ParameterMicrosoft CopilotPolaris Viewer
PriceFreeFree
Rating4.7 (1.3M ratings) — better4.6 (74 ratings)
Positive reviews29.1% of reviews56.4% of reviews — better
Number of ratings1.3M — better74
Update frequencyEvery 4 days — betterEvery 3 months
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#10 — better—
DevicesiPhone, iPadiPhone, iPad, iPod, Vision Pro — better
Requires iOS18.013.0 — better
Further details — not scored
Size448 MB177 MB
Age rating12+4+
DeveloperMicrosoft CorporationPolaris Office Corp.

Customer experience

Microsoft Copilot

All ratings1,326,525 ratings
Positive92.7%
Neutral2.3%
Negative4.9%
Written reviews3,180 reviews
Positive29.1%
Neutral5.9%
Negative65.0%

Polaris Viewer

All ratings74 ratings
Positive89.2%
Neutral5.4%
Negative5.4%
Written reviews55 reviews
Positive56.4%
Neutral10.9%
Negative32.7%

Bugs and requests

Microsoft Copilot

Reported bugs

4 issues
  • Documents not saving properly
  • Inability to change file names or locations
  • Compatibility issues with older devices and OSes
  • Unreliable syncing between devices and cloud

Requested features

4 requests
  • Allow opening multiple documents side-by-side
  • Improve iPad optimization and user experience
  • Provide better integration with third-party cloud storage
  • Add more advanced formatting and editing capabilities

Polaris Viewer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

14 purchases

Microsoft Copilot

Subscriptions14
  • Microsoft 365 Basic$1.991 Month
  • Microsoft 365 Personal1 Month trial$6.991 Month
  • Microsoft 365 Personal2 variants$9.991 Month
Show 11 more
  • Microsoft 365 Personal1 Month trial$9.991 Month
  • Microsoft 365 Family1 Month trial2 variants$12.991 Month
  • Microsoft 365 Family$12.991 Month
  • Microsoft 365 Premium Monthly2 variants$19.991 Month
  • Microsoft 365 Premium Monthly1 Month trial$19.991 Month
  • Microsoft Copilot Pro$20.001 Month
  • Microsoft 365 Personal1 Month trial$99.991 Year
  • Microsoft 365 Personal$99.991 Year
  • Microsoft 365 Family1 Month trial2 variants$129.991 Year
  • Microsoft 365 Family$129.991 Year
  • Microsoft 365 Premium Annual1 Month trial$199.991 Year
1 purchases

Polaris Viewer

One-time1
  • Remove Ads$10.99

Questions

Is Microsoft Copilot free?
Microsoft Copilot is free to download, with in-app purchases available.
Is Polaris Viewer free?
Polaris Viewer is free to download, with in-app purchases available.
Which has better reviews, Microsoft Copilot or Polaris Viewer?
Microsoft Copilot is rated higher. Microsoft Copilot averages 4.7 out of 5 from 1.3M ratings, while Polaris Viewer averages 4.6 from 74 ratings.
Do Microsoft Copilot or Polaris Viewer have ads?
Both Microsoft Copilot and Polaris Viewer show ads.
Which is updated more often, Microsoft Copilot or Polaris Viewer?
Microsoft Copilot ships an update every 4 days, and Polaris Viewer every 3 months. Most recently, Microsoft Copilot was updated on September 27, 2026 and Polaris Viewer on September 26, 2026.

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