Comparison

FileViewer USB for iPhone vs File Master

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

Head to head
About

FileViewer USB for iPhone

This app allows you to view, store, transfer, print, and email a wide variety of file types on your iPhone. It offers robust PDF viewing capabilities, supports numerous document and media formats, and integrates with cloud storage services.

Highlights
  • View over 30 file types
  • Robust PDF reader
  • File and folder management
  • Transfer via USB, Wi-Fi, AirDrop, Email
  • Cloud storage integration
  • Print documents and images
Features
Currently charting
Read full description

OVERVIEW • FileViewer USB is a file viewing, storage, transfer, printing, and email application for the iPhone. It includes one of the best PDF viewers for the iPhone and can also view many other file types. Files are transferred to FileViewer USB, via iTunes (Finder in Mac OS 10.15 Catalina), using a Wi-Fi or USB connection, or via email, AirDrop, the Files app, or connected devices such as thumb drives. FILE VIEWING • Supported file types for direct viewing or listening include portable document format (.pdf), Microsoft Word (.doc & .docx), rich text format (.rtf), plain text files (.txt), Microsoft Excel (.xls & .xlsx), Microsoft PowerPoint (.ppt & .pptx), iWork files (.pages, .key, & .numbers), HTML documents (.html & .htm), web archives (.webarchive), image files (.jpg, .jpeg, .jp2, single & multipage .tif/.tiff, .gif, .bmp, & .png), audio files (.m4a - Apple Lossless & AAC formats, .mp3, .wav, and .aif), video files (.mp4, .m4v, .mov, and .3gp), and other file types (.h, .m, .c, .java, .js, .csv, & .log). • PDF reader is fast, handles large pdf files, and opens password-protected pdfs. A thumbnail scroll bar feature facilitates viewing of long documents. Pages can be bookmarked. Other features include search, markup functionality, and table of contents view. • Photos from the Photos app on the iPhone can be transferred to and viewed in FileViewer. • Images can be copied from this app to the device's camera roll. Images in a given folder can be viewed as a slide show. • Landscape mode as well as zooming and panning is supported for viewing documents and images. FILE & FOLDER MANAGEMENT • Folders can be created to organize files. • Files and folders can be deleted and renamed as well as moved or copied from one folder to another. • Multiple files can be deleted or moved to a different folder at the same time. • FileViewer files can be opened in other apps on the iPhone. • File and folder lists can be filtered by file type, folders, search phrase, and first letter of name. • Files and folders can be sorted by date, size, and modification date (ascending & descending). • Global file search. • Zip archives can be transferred to and unzipped in FileViewer, providing easy one-step transfer of groups of files and/or folders. Zip archives can be created from files and folders stored in FileViewer USB. • Capability to save many document types as a PDF. • Dragging and dropping of files into folders. AIRDROP • With AirDrop, users can share files directly between supported iOS devices, as well as between an iOS device and computer. SOCIAL MEDIA • Post images and web pages to Facebook and Twitter. EMAIL • Files ≤ 20 MB can be emailed as an attachment. • Email attachments can be transferred from the Mail app to FileViewer USB. PRINTING • Documents and images can be printed to AirPrint/ePrint compatible printers. CLOUD STORAGE • Connectivity to iCloud Drive, Box, Dropbox, Google Drive, and Microsoft OneDrive. AIRPLAY & DISPLAYING FILES ON AN EXTERNAL DISPLAY • Using AirPlay, you can wirelessly stream iPhone screen output, via an Apple TV, to an HDTV. • Audio can be wirelessly streamed using AirPlay, via an Apple TV, to an audio system. REQUIREMENTS • iOS 15 (or higher). • Files are transferred to FileViewer USB, via iTunes (Finder in Mac OS 10.15 Catalina), using a Wi-Fi or USB connection, or via email, AirDrop, the Files app, or connected devices such as thumb drives. SECURITY • Use your fingerprint, Face ID, or a password to protect access to FileViewer USB. • Individual files are protected using iOS data protection. HELP • Help is built into and available from within the FileViewer USB application.

About

File Master

Organize, store, and manage all your files and documents efficiently. Transfer files, back up data, and open cloud files. Read various document types and play audio/video with casting support.

Highlights
  • File organization and management
  • Audio & Video Player with casting
  • Text Reader for multiple formats
  • Archive extraction and compression
  • File transfer via browser and LAN
  • Cloud drive integration
  • Passcode protected file vault
Features
Read full description

File Master is your reliable tool to organize, store and manage all your files and documents efficiently. You can transfer files, securely backup your data, open and download files from the cloud drive. You can also easily read files from file servers in the LAN. Main feature: - Audio & Video Player, Supported file formats: mp4,avi,mkv,rmvb,flv,wmv,wav,3gp,mov,swf,mpeg,mp3, wma, wav, dts, aac ...... - Cast to TV while playing video:AirPlay, Chromecast, DLNA. - Text Reader: Support browsing txt,chm,pdf,epub,srt,doc,ppt,xls,rtf ... - Unzip Tool, Supports extracting archive files: zip, rar, 7z, cbz, cbr, tar, gzip, zipx. - Supports extraction of multi-volume archive files. Such as z01, rar.001, 7z.001, zip.001 - Compress imported audio and video files and create archive zip files. - File Transfer: 1)Transfer files via browser on PC. 2) Connect to the file server in the same LAN:SMB/FTP/NFS/SFTP ... - Open, download, backup files from cloud drives: Google Drive, Dropbox, OneDrive, iCloud. - File vault: Protect your important data with passcode lock. #Permanent professional version: * Make a one-time purchase and resume purchases anytime, anywhere. #Annual professional version: * Annual auto-renewable subscription, automatic renewal upon expiration. * Payment will be charged to iTunes Account at confirmation of purchase. * Your subscription will automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. * Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's iTunes Account Settings after purchase. Privacy Policy:https://files-master.web.app/privacypolicy.html Terms of Use:https://files-master.web.app/terms.html Contact us: junjie_ruan@163.com

Screenshots

FileViewer USB for iPhone4 screens
File Master4 screens

Verdict

The call

The clearest difference is price: File Master at Free against FileViewer USB for iPhone's $3.99. File Master also leads on rating (4.5 vs 4.0) and ratings volume (6.9K vs 2). FileViewer USB for iPhone's advantage is in-app purchases (none vs 5) and ads (none vs shown). On review sentiment, device support and iOS requirement 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

File Master is free to download; FileViewer USB for iPhone costs $3.99 up front. File Master sells 5 in-app purchases, starting at $3.99 per year. FileViewer USB for iPhone asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

File Master holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: File Master has 6.9K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 56% of FileViewer USB for iPhone's written reviews are positive against 59% of File Master's.

UpkeepUpdate frequency

FileViewer USB for iPhone ships an update every 4 months, File Master monthly. Both last shipped on September 25, 2026.

Scorecard8 real differences · 3 level
FileViewer USB for iPhone versus File Master: the parameters behind the verdict, then further details
ParameterFileViewer USB for iPhoneFile Master
Price$3.99Free — better
Rating4.0 (2 ratings)4.5 (6.9K ratings) — better
Positive reviews55.6% of reviews58.5% of reviews — better
Number of ratings26.9K — better
Update frequencyEvery 4 monthsMonthly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
Best chart rank#198 — better—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.015.0
Further details — not scored
Size17 MB129 MB
Age rating4+17+
DeveloperMitchell COHEN俐 马

Customer experience

FileViewer USB for iPhone

All ratings2 ratings
Positive50.0%
Neutral50.0%
Negative0.0%
Written reviews63 reviews
Positive55.6%
Neutral12.7%
Negative31.7%

File Master

All ratings6,875 ratings
Positive86.7%
Neutral4.2%
Negative9.1%
Written reviews258 reviews
Positive58.5%
Neutral5.8%
Negative35.7%

Bugs and requests

FileViewer USB for iPhone

Not enough reviews yet to summarise bugs or requests.

File Master

Reported bugs

4 issues
  • Crashes when opening certain file types
  • WiFi transfer feature not working as expected
  • Compression tool not functioning properly
  • Inability to access external storage devices

Requested features

4 requests
  • Add dark mode option
  • Improve file transfer speeds
  • Enhance folder management capabilities
  • Provide better integration with native iOS file system

In-app purchases

None

FileViewer USB for iPhone

No in-app purchases

5 purchases

File Master

Subscriptions1
  • Annual professional version$3.991 Year
One-time4
  • Universal Video Player$0.99
  • Remove Ads$0.99
  • Passcode Lock$0.99
Show 1 more
  • Professional Version$5.99

Questions

Is FileViewer USB for iPhone free?
FileViewer USB for iPhone costs $3.99, with no in-app purchases.
Is File Master free?
File Master is free to download, with in-app purchases available.
Which has better reviews, FileViewer USB for iPhone or File Master?
File Master is rated higher. FileViewer USB for iPhone averages 4.0 out of 5 from 2 ratings, while File Master averages 4.5 from 6.9K ratings.
Do FileViewer USB for iPhone or File Master have ads?
File Master shows ads; FileViewer USB for iPhone does not.
Which is updated more often, FileViewer USB for iPhone or File Master?
FileViewer USB for iPhone ships an update every 4 months, and File Master monthly. Most recently, FileViewer USB for iPhone was updated on September 25, 2026 and File Master on September 25, 2026.

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