USB Disk SE, File Manager vs Sync with S3
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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
Sync with S3
Automatically back up your phone's photos and videos to S3 storage, preserving your album and folder structure. It mirrors your library, uploads edited media and Live Photos, and ensures your S3 storage matches your device without deleting any original files.
- Syncs photo library to S3
- Preserves album and folder hierarchy
- Uploads edited photos and videos
- Supports Live Photos video component
- One-way sync, no phone data deletion
- Selective folder/album syncing
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Sync for S3 synchronizes your phone’s photo library, including the album and folder hierarchy, to your S3 storage. For users who like to organize their photos into folders and albums, Sync will also - Sync automatically creates folders and albums you may have created in your phone’s photo library on S3 storage. - Uploads the video component for Live Photos. - Uploads the edited versions of photos and videos. - Mirror or backup your photo library. - Synchronize your entire photo library or only certain folders and albums. In summary, each time you run Sync, it will make sure any changes to your phone’s photo library are updated on your S3 storage, overwriting, renaming, uploading, and deleting items on your S3 storage if needed. Sync will also NEVER delete any photos from your phone. Sync performs a ONE-WAY sync only, making your S3 storage match your phone’s photo library. Any changes made on your S3 storage will not be synced to your phone, rather, the changes on your S3 storage will simply be overwritten the next time you run a Sync. Free Plan The free plan is limited to syncing up to 3 top-level folders and albums and up to 200 photos. Premium Plan Our affordable premium plan removes all restrictions and unlocks access to all future features. Subscription Pricing and Terms - Annual or monthly subscription billing will start immediately after you subscribe and will auto-renew each year or month. - Subscriptions will automatically renew unless canceled at least one day before the renewal date within 24 hours before the end of the current period. Payment will be charged to your Apple ID account at the confirmation of purchase. You can manage and cancel your subscription by going to your account settings in the App Store. - Subscriptions are non-refundable, so please choose this option carefully. - Please refer to the In-App Purchases section for pricing. Terms of Use — https://www.apple.com/legal/internet-services/itunes/dev/stdeula Privacy Policy — https://sync.photosplus.app/privacy.php
Screenshots
Verdict
The clearest difference is review sentiment: USB Disk SE, File Manager at 76% against Sync with S3's 0%. USB Disk SE, File Manager also leads on rating (4.4 vs 1.0) and ratings volume (846 vs 1). Sync with S3's advantage is ads (none vs shown). On price, update cadence, 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
Both are free to download. USB Disk SE, File Manager sells 4 in-app purchases, starting at $1.99 per 7 days and Sync with S3 sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
USB Disk SE, File Manager holds the better App Store score, 4.4 against 1.0. That said, the two scores are not equally well evidenced: USB Disk SE, File Manager has 846 ratings behind it against 1, 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 Sync with S3's.
USB Disk SE, File Manager ships an update every 3 months, Sync with S3 every 2 months. The most recent releases landed on October 15, 2026 and October 2, 2026 respectively.
| Parameter | USB Disk SE, File Manager | Sync with S3 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (846 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 76.3% of reviews — better | 0.0% of reviews |
| Number of ratings | 846 — better | 1 |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad, Apple TV, Apple Watch — better | iPhone, iPod |
| Requires iOS | 16.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 224 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Imesart S.a.r.l. | Pixegram, LLC |
Customer experience
USB Disk SE, File Manager
Sync with S3
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
Sync with S3
Not enough reviews yet to summarise bugs or requests.
In-app purchases
USB Disk SE, File Manager
- 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
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- USB Disk Pro Yearly1 Month trial$39.991 Year
Sync with S3
- Premium - Monthly$2.991 Month
- Premium - Yearly$19.991 Year
Questions
Is USB Disk SE, File Manager free?
Is Sync with S3 free?
Which has better reviews, USB Disk SE, File Manager or Sync with S3?
Do USB Disk SE, File Manager or Sync with S3 have ads?
Which is updated more often, USB Disk SE, File Manager or Sync with S3?
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