Comparison

USB Disk SE, File Manager vs Air Doc Viewer

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

Head to head
About

USB Disk SE, File Manager

This app allows you to store, view, and manage documents on your iPhone and iPad. It offers a built-in viewer, easy file transfers via iTunes, and integration with cloud storage services. Enjoy a simple interface with powerful features for organizing and accessing your files.

Highlights
  • Cloud storage integration (Dropbox, Google Drive, OneDrive, Box)
  • Store and view files on iPhone/iPod
  • Intuitive swipe navigation
  • File preview with thumbnails
  • Copy, paste, cut, delete, and create files
  • Email documents
  • USB file transfers
Features
Read full description

USB Disk lets you store, view and manage documents on your iPhone and 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 / 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. • Store and view files on your iPhone / iPod. • 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. • Full screen file viewer. • USB file transfers. • Background audio. • Slideshow with adjustable delay. • Fast scrolling, page up/down functionalities. • Email your documents. SUPPORTED FILE TYPES • PDF files. • 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: • Open and create zip files. • Adjust the audio mixer, use shuffle and repeat. • 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

Air Doc Viewer

Securely transfer documents, images, and music between your iOS devices and computers without using the cloud. Files remain on your local network and are encrypted during transmission. Access files via a web browser and protect sensitive data with a private area.

Highlights
  • Local network file transfer
  • Encrypted transmissions
  • Private file area with TouchID/password
  • Web browser access from any OS
  • Stream media to browser or AppleTV
  • Use iPad as secondary Mac display
  • Drag and drop file transfer
Read full description

Air Doc is the ultimate solution for transferring files - documents, images, songs, you name it - to and from your iPhone or iPad without any cloud solution. Your files never leave your local network and every transmission is encrypted - protect your privacy. SECURE FILE SOLUTION Air Doc is the long missing file transfer solution for your iOS device. Simply drag and drop files to your iPhone or iPad. Your files never leave your network and are encrypted on transmission. Transfer files between iOS devices using AirDrop. You can archive multiple files (zip) and send them via email or messages. PRIVATE AREA You can move your files into a private area that is secured by TouchID or password. WEB ACCESS Access your files from any operating system (OSX or Windows) using your browser. Even stream movies directly from your iOS device to your browser. Use Air Doc to replace your Mac's secondary display with your iPad vor viewing documents - enhanced by the touch capabilities of your iOS device, but without the need to install any drivers. Simply drag movies and songs to your iOS device to view them offline - even stream to your AppleTV using AirPlay. The Air Doc App for your Mac is available in the Mac App Store. NETWORK From Mac to iOS: all your devices must have access to the same LAN (or WLAN) - no additional network configuration is needed. From iOS to iOS: no network configuration needed at all. FEATURES - transfer files between iPhone/iPad devices using Air Drop - import or export images from camera or photo library - private file area secured by TouchID and/or password - Live Preview: every time you save your graphic, the preview on the device will be updated - transfer files to and from your iOS device, simply by drag&drop - upload your files to and from iCloud Drive or Dropbox and have them available anywhere - full multitasking support on supported iPads - upload and download files using your web browser - send and display a screenshot to your iOS device with one click or by hotkey (Cmd-Alt-S) - send and display the current clipboard with one click or by hotkey (Cmd-Alt-V) - supported document formats: pdf, doc, xls, pages, numbers, txt, rtf - anything QuickLook can show - supported multimedia formats: m4v, m4a, mp3 - anything iOS can play - Air Doc for iOS is an universal app, runs on iPhone and iPad - stores your last uploads for access when offline - zero configuration network support (Bonjour) USE CASES - share photos with your friends on the go - preview your work in progress directly on your iPhone or iPad - use it as an enhanced secondary display for your Mac - sync files between your iOS devices using iCloud - transfer files from any operating system in your browser - transfer your documents from any Mac fast and easy just by drag&drop - like a wireless USB stick - simply drop a web url and it will immediately open in a browser on your iOS device - use it to distribute handouts without the need for email, iTunes or any cloud space - fast and easy - drop movies to watch them on your iOS device and take them with you, even stream your movies using AirPlay - drop movies or songs to your friends iOS device without any pairing or cables - store recently transferred files on your iOS device for later viewing (without the need for any network access) We always want to improve our apps, so if you encounter any errors or if you have any suggestions, please write to office@traunau.at

Screenshots

USB Disk SE, File Manager4 screens
Air Doc Viewer4 screens

Verdict

The call

The clearest difference is review sentiment: USB Disk SE, File Manager at 76% against Air Doc Viewer's 0%. USB Disk SE, File Manager also leads on rating (4.4 vs 3.0) and update cadence (every 2 months vs every 20 months). Air Doc Viewer's advantage is iOS requirement (12.0 vs 16.0). On price, ads, in-app purchases and monetization model 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

Both are free to download. USB Disk SE, File Manager sells 4 in-app purchases, starting at $1.99 per 7 days and Air Doc Viewer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

USB Disk SE, File Manager holds the better App Store score, 4.4 against 3.0. That said, the two scores are not equally well evidenced: USB Disk SE, File Manager has 854 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 76% of USB Disk SE, File Manager's written reviews are positive against 0% of Air Doc Viewer's.

UpkeepUpdate frequency

USB Disk SE, File Manager ships an update every 2 months, Air Doc Viewer every 20 months. The most recent releases landed on October 28, 2026 and October 18, 2026 respectively.

Scorecard5 real differences · 5 level
USB Disk SE, File Manager versus Air Doc Viewer: the parameters behind the verdict, then further details
ParameterUSB Disk SE, File ManagerAir Doc Viewer
PriceFreeFree
Rating4.4 (854 ratings) — better3.0 (3 ratings)
Positive reviews76.3% of reviews — better0.0% of reviews
Number of ratings854 — better3
Update frequencyEvery 2 months — betterEvery 20 months
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, Apple TV, Apple Watch — betteriPhone, iPad, iPod
Requires iOS16.012.0 — better
Further details — not scored
Size224 MB9 MB
Age rating4+4+
DeveloperImesart S.a.r.l.IT Traunau

Customer experience

USB Disk SE, File Manager

All ratings852 ratings
Positive85.0%
Neutral4.1%
Negative10.9%
Written reviews1,786 reviews
Positive76.3%
Neutral9.7%
Negative14.0%

Air Doc Viewer

All ratings3 ratings
Positive33.3%
Neutral33.3%
Negative33.3%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Bugs and requests

USB Disk SE, File Manager

Reported bugs

3 issues
  • Crashes when opening certain file types
  • Syncing issues with iTunes
  • Compatibility problems with newer iOS versions

Requested features

4 requests
  • Ability to edit documents within the app
  • Improved file management with folders and renaming
  • Support for more file types
  • Wireless file transfer without iTunes

Air Doc Viewer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

USB Disk SE, File Manager

Subscriptions4
  • USB Disk Pro Weekly$1.997 Days
  • USB Disk Pro Monthly7 Days trial$4.991 Month
  • USB Disk Pro Half Yearly14 Days trial$19.996 Months
Show 1 more
  • USB Disk Pro Yearly1 Month trial$39.991 Year
1 purchases

Air Doc Viewer

One-time1
  • Air Doc Pro Upgrade$2.99

Questions

Is USB Disk SE, File Manager free?
USB Disk SE, File Manager is free to download, with in-app purchases available.
Is Air Doc Viewer free?
Air Doc Viewer is free to download, with in-app purchases available.
Which has better reviews, USB Disk SE, File Manager or Air Doc Viewer?
USB Disk SE, File Manager is rated higher. USB Disk SE, File Manager averages 4.4 out of 5 from 854 ratings, while Air Doc Viewer averages 3.0 from 3 ratings.
Do USB Disk SE, File Manager or Air Doc Viewer have ads?
Both USB Disk SE, File Manager and Air Doc Viewer show ads.
Which is updated more often, USB Disk SE, File Manager or Air Doc Viewer?
USB Disk SE, File Manager ships an update every 2 months, and Air Doc Viewer every 20 months. Most recently, USB Disk SE, File Manager was updated on October 28, 2026 and Air Doc Viewer on October 18, 2026.

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