Comparison

USB Stick with Viewers vs USB Sharp Pro

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

Head to head
About

USB Stick with Viewers

Transform your iOS device into a portable storage solution. Easily transfer files to and from your computer via iTunes, and access your Dropbox files offline. Annotate documents, sign faxes, and organize your files with optional local storage folders.

Highlights
  • File transfer via iTunes
  • Dropbox file caching and offline viewing
  • Document annotation and signing
  • Local folder organization
  • Support for various document types
  • PDF and FAX pre-rendering
  • Print, email, and PDF creation
Features
Read full description

Your iOS device IS a USB Stick. Our USB Stick app lets you copy data to/from your desktop computer via iTunes, and lets you download and cache items from your DropBox Account. Now with annotation capability, you can write on or sign your faxes. Add notes, make corrections or complete a contract with your actual signature. For dropbox we can passively cache your files so you can download and view them later without network connectivity! Optional support for local storage Folders to help organize your files. Using Apple's preview technology we can display many document types, or you can expand USB Stick's capabilities by adding extra features via in-app purchases, tap the "In-App Purchase Items" option from the main screen. Most notable is the ability to add accelerated PDF or FAX file pre-rendering so USB Stick can manage both your Fax files and your PDF documents, or add the ability to read and display many different file types, or work with wall size Maps. In-app purchases enable all the functionality you need. Lastly we have the ability to print, email, or create a PDF from most image file types, when you purchase our accelerated readers.

About

USB Sharp Pro

Transform your iPhone or iPad into a portable wireless storage disk for efficient file management. Supports a wide range of file types for viewing, editing, and transferring via Wi-Fi or iTunes.

Highlights
  • Wireless storage disk
  • File management
  • Wi-Fi transfer
  • iTunes file sharing
  • Document reader
  • E-book reader
  • Music player
Features
Read full description

USB Sharp Pro can turn your iPhone, ipad, ipod into a large Capacity, Portable and Wireless storage disk, Facilitate and efficient manage of your files! ------------------------------------ V1.2.2 Updates 1.Support for editing php, js, html file. 2.Support the open format, such as flv,asf,rmvb,avi,mpg,mkv,wmv. ------------------------------------ V1.2.0 Updates 1. Dropbox Operate, multiple files upload & download, history,create folder 2. Add manual ------------------------------------ V1.1.3 Updates 1.Chrome and Firefox Supported upload multiple files 2.Extract files from encryption .rar ------------------------------------ V1.1.2 Updates ** Optimization pdf reader, ** Support for importing videos/photos to Photo Library ** Support for exporting video from Photo Library ------------------------------------ V1.1.1 Updates ** Search file(folder) name function added ** Picture Viewer Improved ** Unzip type added ------------------------------------ V1.1.0 Updates New Features: ** add authentication for local login ** add authentication for wifi transfer ** Custom background image; ** Sorting by file size **** Build-in Music Player [Support .mp3 .m4a .aac] ** Background playing; ** Sorting by song title, artist name and album name in the playlists ** Support many kinds of playing modes ** Support playing the music inside iPod ** Custom background image; ** Support searching lyrics on-line and showing it in synchronization , and support the lyrics duplication ** Support lyrics edit; ------------------------------------ V1.0.1 Updates * Full screen view files Supported * Multiple photo import Supported Specifically as follows: **** Facilitate and efficient manage files * Sorting by file name、create time and file type * View, copy, move, delete, rename, email, zip Compression and unzip files/folders * Encryption folder, protect your files * Extract all files from a compressed .zip file * Glide deleting function * Select all and Cancel all operate * Transferring files by wifi and iTunes file sharing * Email multiple files, folder Supported * Open email attachments * Photo import Supported * Open files in other applications * Landscape mode supported * iPad-compatible **** Facilitate and efficient view files * E-book reader (.epub) * Thumbnail preview, Photo View, Zoom * Players, support mp3、m4a、aac and mp4 * Document reader, support .pdf .rtf .rtfd .doc .docx etc * Multi-touch Supported, Zoom files * Bookmark supported, fast file location **** Facilitate and efficient edit plain files * Convert plain file encoding (Unicode,UTF-8 etc) * Plain file content copy, cut, paste and replace * External file copy and paste **** Add plain text(default encoding UTF-8), photos(from Camera) and folders **** Support Simplified Chinese and English USB Sharp Pro support list of file types: E-book: epub Plain text: .txt .php .js .html Document: .pdf .csv .rtf .rtfd .doc .docx .xls .xlsx .ppt .pptx (office 2003 or later) Image: .png .jpg .jpeg .gif .bmp .xbm .tif .tiff Audio: .mp3 .m4a .aac Video: .mp4 .mov .m4v .3gp .flv .asf .rmvb .avi .mpg .mkv .wmv Web: .htm .html .xhtml Compressed: .zip .rar

Screenshots

USB Stick with Viewers4 screens
USB Sharp Pro2 screens

Verdict

The call

The clearest difference is in-app purchases: USB Sharp Pro at none against USB Stick with Viewers's 9. USB Sharp Pro also leads on review sentiment (60% vs 33%). USB Stick with Viewers's advantage is price ($1.99 vs $2.99). On update cadence, ads, 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

USB Stick with Viewers costs $1.99 and USB Sharp Pro $2.99 up front. USB Stick with Viewers sells 9 one-off in-app purchases. USB Sharp Pro asks for nothing beyond the download.

UpkeepUpdate frequency

USB Stick with Viewers ships an update every 6 weeks, USB Sharp Pro every 2 months. The most recent releases landed on August 22, 2026 and September 22, 2026 respectively.

Scorecard4 real differences · 6 level
USB Stick with Viewers versus USB Sharp Pro: the parameters behind the verdict, then further details
ParameterUSB Stick with ViewersUSB Sharp Pro
Price$1.99 — better$2.99
Rating—4.0 (12 ratings) — better
Positive reviews33.3% of reviews59.6% of reviews — better
Number of ratings—12 — better
Update frequencyEvery 6 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.013.0 — better
Further details — not scored
Size33 MB52 MB
Age rating4+4+
DeveloperCorporate Smalltalk Consulting Ltd锦文 游

Customer experience

USB Stick with Viewers

Written reviews27 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

USB Sharp Pro

All ratings12 ratings
Positive75.0%
Neutral8.3%
Negative16.7%
Written reviews104 reviews
Positive59.6%
Neutral7.7%
Negative32.7%

In-app purchases

9 purchases

USB Stick with Viewers

One-time9
  • No iAds$0.99
  • Folders$0.99
  • Accelerated PDF viewing$1.99
Show 6 more
  • Extra Image Types$2.99
  • Large Format Pages$3.99
  • Enable Signature and Annotation$3.99
  • Enable Cloud Server$4.99
  • Read Fax files$5.99
  • Everything$9.99
None

USB Sharp Pro

No in-app purchases

Questions

Is USB Stick with Viewers free?
USB Stick with Viewers costs $1.99, and also offers in-app purchases.
Is USB Sharp Pro free?
USB Sharp Pro costs $2.99, with no in-app purchases.
Do USB Stick with Viewers or USB Sharp Pro have ads?
Neither USB Stick with Viewers nor USB Sharp Pro shows ads.
Which is updated more often, USB Stick with Viewers or USB Sharp Pro?
USB Stick with Viewers ships an update every 6 weeks, and USB Sharp Pro every 2 months. Most recently, USB Stick with Viewers was updated on August 22, 2026 and USB Sharp Pro on September 22, 2026.

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