USB Sharp vs MOMAX Backup
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
USB Sharp
Transform your iPhone or iPad into a portable wireless storage disk for efficient file management. Upload multiple files via Chrome and Firefox, extract encrypted RAR archives, and organize documents, photos, and videos with ease.
- Portable wireless storage
- File management
- Multiple file upload
- Encrypted archive extraction
- Document reader
- Photo viewer
- Video player
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USB Sharp can turn your iPhone, ipad, ipod into a large Capacity, Portable and Wireless storage disk, Facilitate and efficient manage of your files! -------------------------------------------------------- V1.1.1 Updates 1. Chrome and Firefox Supported upload multiple files 2. Extract files from encryption .rar -------------------------------------------------------- V1.1.0 Updates ** Optimization pdf reader ** Support for importing videos/photos to Photo Library ** Support for exporting video from Photo Library -------------------------------------------------------- V1.0.4 Updates ** Search file(folder) name function added ** Picture Viewer Improved ** Unzip type added -------------------------------------------------------- V1.0.3 Updates New Features: ** add authentication for local login ** add authentication for wifi transfer ** Sorting by file size -------------------------------------------------------- V1.0.2 Updates * E-book reader (.epub) * Encryption folder, protect your files * Images thumbnail * Full screen view files Supported -------------------------------------------------------- V1.0.1 Updates * Open files in other applications 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 * Extract all files from a compressed .zip file * Glide deleting function * Select all and DeSelect all * Transferring files by wifi and itunes file sharing * Email multiple files, folder Supported * Photo import Supported * Landscape mode supported * iPad-compatible **** Facilitate and efficient view files * Photo View, Zoom, move * Players, support mp3、m4a、aac and mp4 * Document reader, .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 USBSharp support list of file types: e-book: .epub Plain text: .txt 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 Web: .htm .html .xhtml Compressed: .zip .rar
MOMAX Backup
Easily manage and back up all your files from iOS devices. Transfer data between different devices and platforms, supporting over 45 file formats including documents, images, audio, and video.
- File management for iOS devices
- Cross-device and cross-platform file exchange
- Backup Camera Roll, Contacts, and Calendar
- Supports over 45 file formats
- Versatile data control
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The Momax Backup app is the best way to manage all your files on iOS devices. Exchanges files with different devices & platforms with ease. Backup Camera Roll / Contacts / Calendar contents to Momax iOS storage and keep control of your data. Support more than 45 different types of file formats : Document: Pages, Numbers, Keynote, doc, docx, xls, xlsx, ppt, pptx, rtf, txt, html, pdf Image: jpg, png, bmp, gif, tif, tiff, ico, xbm, cur, RAW Audio: mp3, aac, aif, aiff, wav, m4a, caf, FLAC Video: mp4, mov, m4v (without DRM), mkv, avi, flv, rm, rmvb, wmv, vob, 3gp Compressed: zip It’s the most versatile iOS file management solution for your data.
Screenshots
Verdict
The clearest difference is review sentiment: USB Sharp at 63% against MOMAX Backup's 18%. USB Sharp also leads on update cadence (every 3 weeks vs every 3 months) and ratings volume (18 vs 2). MOMAX Backup's advantage is rating (5.0 vs 3.1) and in-app purchases (none vs 6). On price and 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
Both are free to download. USB Sharp sells 6 one-off in-app purchases. MOMAX Backup asks for nothing beyond the download.
MOMAX Backup holds the better App Store score, 5.0 against 3.1. That said, the two scores are not equally well evidenced: USB Sharp has 18 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 63% of USB Sharp's written reviews are positive against 18% of MOMAX Backup's, so the app with the better star average is not the one people write more warmly about.
USB Sharp ships an update every 3 weeks, MOMAX Backup every 3 months. The most recent releases landed on October 21, 2026 and October 7, 2026 respectively.
| Parameter | USB Sharp | MOMAX Backup |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (18 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 62.9% of reviews — better | 18.2% of reviews |
| Number of ratings | 18 — better | 2 |
| Update frequency | Every 3 weeks — better | Every 3 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 55 MB | 177 MB |
| Age rating | 4+ | 4+ |
| Developer | 锦文 游 | i-FlashDrive Inc. |
Customer experience
USB Sharp
MOMAX Backup
In-app purchases
USB Sharp
- Remove ads$0.99
- Music Player$0.99
- Dropbox$0.99
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- Video Player$0.99
- SkyDrive$0.99
- Full Version$2.99
MOMAX Backup
No in-app purchases







