Comparison

USB Disk vs Ebook Reader Pro

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

Head to head
About

USB Disk

Manage and view documents on your iPhone or iPad with this intuitive file manager. Access cloud storage, open various file types, and transfer files via iTunes. Advanced features like photo library access and PDF annotation are available via subscription.

Highlights
  • Cloud storage integration (Dropbox, Google Drive, OneDrive, Box)
  • Built-in document viewer for various file types
  • File transfer via iTunes
  • Create and open zip files
  • Swipe navigation and file previews
  • Email documents and download attachments
Features
Read full description

USB Disk lets you store, view and manage documents on your iPhone or iPad. It has an amazing built in document viewer and is very easy to use, with a simple and intuitive interface, yet it contains many powerful features. Drag and drop files in iTunes to transfer them to your iPhone or iPad, then view them anywhere! TUAW - "USB Disk is [...] a nicely designed one." Lifehacker - "The Best. USB Disk for iOS gives you a fast and easy way to transfer documents and images to your device." Apple - "New and Noteworthy" TOP REASONS TO BUY • Access Dropbox, Google Drive, OneDrive and Box. • Open and create zip files. • Store and view files. • Navigate using swipes (like Photos / iBooks app). • Thumbnails let you preview your files. • Copy, paste, cut, delete and create files. MORE FEATURES • View and download email attachments. • Restores last viewing position. • Full screen file viewer. • CBR and CBZ file viewer. • USB file transfers. • Background audio. • Slideshow with adjustable delay. • Fast scrolling, page up/down functionalities. • Email your documents. • Lock code. SUPPORTED FILE TYPES • PDF files. • Compressed files (zip, rar). • MS Office documents. • iWork documents. • Pictures (jpg, png, gif, ...). • eBooks (pdf, ePub, html, txt, ...). • Comics (cbr, cbz, pdf, ...). • Audio files (mp3, m4a, wav, ...). • Video files (m4v, mov, avi, mkv, ...). UPDATES Buy now and get free updates. SUBSCRIPTION All features listed above can be used without an in app purchase. Some advanced features require an active subscription. These include: • Access the device's photos library. • Protect the access to the app or specific files and folders with lock codes. • Access WebDAV and FTP servers. You can also configure SharePoint connections. • Edit simple text files. Also annotate PDF files. • Present files on external screens. Duration and price of each subscription are displayed in our storefront. All subscription costs will be charged to your Apple ID account, starting at the confirmation of purchase. Subscription automatically renews unless it is canceled at least 24 hours before the end of the subscription period. Your account will be charged for renewal within 24 hours prior to the end of the subscription period. It is not possible to cancel a subscription period once you have been charged for it. Any unused portion of a free trial period is forfeited as soon as a subscription is purchased. You can manage subscriptions and disable auto renewal by going to your account settings on the App Store after purchase. Terms of Service: https://imesart.com/legal/terms-of-service.php

About

Ebook Reader Pro

This application provides a fast and reliable way to read various document formats on iOS and Mac. It offers features like zoom, bookmarking, text selection, and search capabilities for an enhanced reading experience.

Highlights
  • Supports PDF, ePub, FB2, XPS, DjVu, CBZ, CBR
  • Pinch to zoom and smart zoom
  • Bookmark management
  • Table of contents support
  • Selectable and searchable text
  • Brightness adjustment
  • Document sharing and printing
Features
Read full description

Ebook Reader Pro: the best, easiest, fastest, and reliable way to read PDF, ePub, FB2, XPS, DjVu, CBZ, CBR documents on iOS. Ebook Reader Pro is also available on Mac OS. KEY FEATURES: ◆Pinch to zoom in or out, Smart zoom is also available. ◆Bookmarks Management. ◆Table of contents supported. ◆Text Selectable, copy text to clipboard for further or define text. ◆Text searchable, highlight the word you need. ◆Brightness adjustable. ◆Record documents recently read. ◆Show or hide links. ◆History of pages, back or forward the page. ◆Share or open document with other App. ◆Print document. SUPPORT: You can refer User Manual for any assistance or contact support. Please feel free to contact us if you have any questions about using our products at any time. Email: support@firmshell.com

Screenshots

USB Disk4 screens
Ebook Reader Pro4 screens

Verdict

The call

The clearest difference is rating: USB Disk at 4.6 against Ebook Reader Pro's 2.0. USB Disk also leads on review sentiment (71% vs 38%) and ratings volume (161 vs 1). Ebook Reader Pro's advantage is in-app purchases (none vs 10) and ads (none vs shown). On 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

USB Disk costs $0.99 and Ebook Reader Pro $5.99 up front. USB Disk sells 10 in-app purchases, starting at $4.99 per month. Ebook Reader Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

USB Disk holds the better App Store score, 4.6 against 2.0. That said, the two scores are not equally well evidenced: USB Disk has 161 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 71% of USB Disk's written reviews are positive against 38% of Ebook Reader Pro's.

UpkeepUpdate frequency

USB Disk ships an update every 2 months, Ebook Reader Pro every 4 days. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

Scorecard9 real differences · 1 level
USB Disk versus Ebook Reader Pro: the parameters behind the verdict, then further details
ParameterUSB DiskEbook Reader Pro
Price$0.99 — better$5.99
Rating4.6 (161 ratings) — better2.0 (1 ratings)
Positive reviews70.9% of reviews — better37.5% of reviews
Number of ratings161 — better1
Update frequencyEvery 2 monthsEvery 4 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod, Mac — better
Requires iOS16.012.0 — better
Further details — not scored
Size200 MB38 MB
Age rating4+4+
DeveloperImesart S.a.r.l.群群 刘

Customer experience

USB Disk

All ratings161 ratings
Positive90.7%
Neutral3.1%
Negative6.2%
Written reviews1,057 reviews
Positive70.9%
Neutral13.9%
Negative15.2%

Ebook Reader Pro

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews8 reviews
Positive37.5%
Neutral0.0%
Negative62.5%

Bugs and requests

USB Disk

Reported bugs

3 issues
  • Inability to open certain file types
  • Compatibility issues with newer iOS versions
  • Syncing problems between devices

Requested features

4 requests
  • Support for more file types
  • Improved integration with cloud storage services
  • Ability to edit and annotate files
  • Better organization and folder management

Ebook Reader Pro

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

USB Disk

Subscriptions1
  • USB Disk Pro Monthly7 Days trial$4.991 Month
One-time9
  • Audio Player +$0.99
  • Zip files support$0.99
  • Dropbox access$0.99
Show 6 more
  • Lock code$0.99
  • Text editor$0.99
  • Evernote access$0.99
  • Google Drive access$0.99
  • OneDrive access$0.99
  • WebDAV access$1.99
None

Ebook Reader Pro

No in-app purchases

Questions

Is USB Disk free?
USB Disk costs $0.99, and also offers in-app purchases.
Is Ebook Reader Pro free?
Ebook Reader Pro costs $5.99, with no in-app purchases.
Which has better reviews, USB Disk or Ebook Reader Pro?
USB Disk is rated higher. USB Disk averages 4.6 out of 5 from 161 ratings, while Ebook Reader Pro averages 2.0 from 1 ratings.
Do USB Disk or Ebook Reader Pro have ads?
USB Disk shows ads; Ebook Reader Pro does not.
Which is updated more often, USB Disk or Ebook Reader Pro?
USB Disk ships an update every 2 months, and Ebook Reader Pro every 4 days. Most recently, USB Disk was updated on November 6, 2026 and Ebook Reader Pro on November 3, 2026.

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