Comparison

USB Disk vs iSecure Adapter

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

iSecure Adapter

This app facilitates secure data transfer and file protection for iPhone and iPad devices. It allows users to back up photos, videos, and contacts, and transfer files between their device and external storage like USB flash drives or Micro SD cards.

Highlights
  • Secure data transfer
  • File protection
  • Backup photos and videos
  • Backup contacts
  • Transfer to USB/Micro SD
Features
Read full description

App is designed to work with iSecure Adapter product for iPhone & iPad and supports data transfer and file protection. Security .Advanced hardware 256-bit AES cipher for data encryption Data transfer and backup .Free up space on your iPhone or iPad .Data transfer between iPhone/iPad and USB flash drive or Micro SD card .Backup photos and videos from your camera roll .Backup contacts from your device

Screenshots

USB Disk4 screens
iSecure Adapter4 screens

Verdict

The call

The clearest difference is price: iSecure Adapter at Free against USB Disk's $0.99. iSecure Adapter also leads on in-app purchases (none vs 10) and ads (none vs shown). USB Disk's advantage is rating (4.6 vs 2.0) and ratings volume (160 vs 1). On update cadence, 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

iSecure Adapter is free to download; USB Disk costs $0.99 up front. USB Disk sells 10 in-app purchases, starting at $4.99 per month. iSecure Adapter 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 160 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

USB Disk ships an update every 3 months, iSecure Adapter every 2 months. The most recent releases landed on September 26, 2026 and June 22, 2026 respectively.

Scorecard7 real differences · 4 level
USB Disk versus iSecure Adapter: the parameters behind the verdict, then further details
ParameterUSB DiskiSecure Adapter
Price$0.99Free — better
Rating4.6 (160 ratings) — better2.0 (1 ratings)
Positive reviews70.8% of reviews—
Number of ratings160 — better1
Update frequencyEvery 3 monthsEvery 2 months — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
Best chart rank#156 — better—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS12.011.0 — better
Further details — not scored
Size170 MB28 MB
Age rating4+4+
DeveloperImesart S.a.r.l.sunprotected technology corp.

Customer experience

USB Disk

All ratings160 ratings
Positive91.3%
Neutral3.1%
Negative5.6%
Written reviews1,056 reviews
Positive70.8%
Neutral13.9%
Negative15.2%

iSecure Adapter

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

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

iSecure Adapter

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

iSecure Adapter

No in-app purchases

Questions

Is USB Disk free?
USB Disk costs $0.99, and also offers in-app purchases.
Is iSecure Adapter free?
iSecure Adapter is free to download, with no in-app purchases.
Which has better reviews, USB Disk or iSecure Adapter?
USB Disk is rated higher. USB Disk averages 4.6 out of 5 from 160 ratings, while iSecure Adapter averages 2.0 from 1 ratings.
Do USB Disk or iSecure Adapter have ads?
USB Disk shows ads; iSecure Adapter does not.
Which is updated more often, USB Disk or iSecure Adapter?
USB Disk ships an update every 3 months, and iSecure Adapter every 2 months. Most recently, USB Disk was updated on September 26, 2026 and iSecure Adapter on June 22, 2026.

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