Comparison

WatchPDF vs Cluster Files

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

Head to head
About

WatchPDF

View PDF files directly on your Apple Watch. This app allows you to access and navigate PDFs stored on your paired iPhone without needing to transfer them. Enjoy convenient PDF viewing anytime, anywhere.

Highlights
  • View PDFs on Apple Watch
  • Stream PDFs from iPhone
  • Zoom and navigate pages
  • Support for password-locked PDFs
  • Adjustable screen brightness
  • App Lock feature
Features
Read full description

PDF app for Apple Watch only View PDF files by inserting them into your Apple Watch. You can check PDF files anytime, anywhere on your Apple Watch. The watch app can be run alone, but To send PDF files to Apple Watch, you need the iPhone app. Please make sure you have an Apple Watch before purchasing the app. The iPhone app does not support viewing PDF files. The iPhone app sends PDF files to a connected Apple Watch. *Features* - Device: Apple Watch (WatchOS 10+), iPhone (iOS 17+) - File: PDF - Zoom in and out: Zoom in and out of content using the zoom in/zoom out buttons. - Page mode: Switch pages back and forth and go to a specific page - Vertical mode: Navigate pages by scrolling up and down in the list - Support for password-locked PDFs - Runs alone on Apple Watch, iPhone app required for file transfer - Touch the content screen to hide and display various menus and buttons - App screen brightness - App Lock: Only possible when the watch is password-protected ** Phone Streaming ** - Browse and open files inside nearby iPhone app from paired Apple Watch app, and switch pages - Access, browse, and open files on your iPhone from your watch without transferring them to your watch - Paired iPhone and Apple Watch must be in close proximity, and install and run the app on iPhone - Page quality will be adjusted. ** Search "WatchPDF" on YouTube to watch a usage video. ** Our app does not provide separate PDF files. PDF files can be viewed by inserting the file stored by the app user into the app.

About

Cluster Files

Manage files directly from your Apple Watch. Supports common file operations and various file types, including transferring files from your iPhone and connecting to SMB servers.

Highlights
  • Copy, move, and delete files
  • Supports audio, video, images, ebooks, and more
  • Transfer files from iPhone to Apple Watch
  • Connect to SMB servers
  • View files on your wrist
Features
Read full description

Powerful File Manager on Apple Watch Cluster Files supports basic file operations such as copy, move, and delete, while providing support for various types of files including audio, video, images, compressed files, plain text, rich text, e-books... It is an integrated and efficient tool on your watch. Cluster Files also supports transferring any file from your iPhone directly to your Apple Watch. The operation is simple and convenient, completed with just a tap. Anytime, anywhere, you can raise your wrist to view the files you need. You can also use Cluster Files to connect to servers via SMB and transfer files.

Screenshots

WatchPDF4 screens
Cluster Files2 screens

Verdict

The call

The clearest difference is review sentiment: WatchPDF at 89% against Cluster Files's 28%. WatchPDF also leads on rating (5.0 vs 3.0) and update cadence (weekly vs every 3 weeks). Cluster Files's advantage is price ($0.99 vs $4.99) and ratings volume (3 vs 1). On ads, in-app purchases, monetization model 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

WatchPDF costs $4.99 and Cluster Files $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

WatchPDF holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews point the same way: 89% of WatchPDF's written reviews are positive against 28% of Cluster Files's.

UpkeepUpdate frequency

WatchPDF ships an update weekly, Cluster Files every 3 weeks. The most recent releases landed on September 15, 2026 and September 22, 2026 respectively.

Scorecard5 real differences · 5 level
WatchPDF versus Cluster Files: the parameters behind the verdict, then further details
ParameterWatchPDFCluster Files
Price$4.99$0.99 — better
Rating5.0 (1 ratings) — better3.0 (3 ratings)
Positive reviews88.9% of reviews — better27.6% of reviews
Number of ratings13 — better
Update frequencyWeekly — betterEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, Apple WatchiPhone, iPad, Apple Watch — better
Requires iOS16.016.0
Further details — not scored
Size16 MB80 MB
Age rating4+4+
Developerkim juyoung浩源 陈

Customer experience

WatchPDF

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews9 reviews
Positive88.9%
Neutral0.0%
Negative11.1%

Cluster Files

All ratings3 ratings
Positive33.3%
Neutral33.3%
Negative33.3%
Written reviews29 reviews
Positive27.6%
Neutral24.1%
Negative48.3%

In-app purchases

None

WatchPDF

No in-app purchases

None

Cluster Files

No in-app purchases

Questions

Is WatchPDF free?
WatchPDF costs $4.99, with no in-app purchases.
Is Cluster Files free?
Cluster Files costs $0.99, with no in-app purchases.
Which has better reviews, WatchPDF or Cluster Files?
WatchPDF is rated higher. WatchPDF averages 5.0 out of 5 from 1 ratings, while Cluster Files averages 3.0 from 3 ratings.
Do WatchPDF or Cluster Files have ads?
Neither WatchPDF nor Cluster Files shows ads.
Which is updated more often, WatchPDF or Cluster Files?
WatchPDF ships an update weekly, and Cluster Files every 3 weeks. Most recently, WatchPDF was updated on September 15, 2026 and Cluster Files on September 22, 2026.

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