Comparison

USB Sharp vs USB

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

Head to head
About

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.

Highlights
  • Portable wireless storage
  • File management
  • Multiple file upload
  • Encrypted archive extraction
  • Document reader
  • Photo viewer
  • Video player
Features
Read full description

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

About

USB

This tool connects to U.S. Boiler modulating condensing boilers via a Bluetooth adapter for commissioning, diagnostics, and service. It offers wizards for startup and troubleshooting, data logging, and remote support capabilities through a web portal.

Highlights
  • Bluetooth connectivity to boilers
  • Commissioning, diagnostic, and service functions
  • Startup, troubleshoot, and service wizards
  • Cloud data logging and reporting
  • Remote support via web portal
  • Boiler firmware and parameter updates
Read full description

USB-Connect is a commissioning, diagnostic and service tool consisting of a Bluetooth Adaptor and mobile device app. The app communicates with any U.S. Boiler modulating condensing boiler. USB-Connect is a local service tool with web portal data collection and live streaming to enable remote support. Compatible Boilers include Alpine, Alta, AltaC, Aspen, AspenC, K2WT, K2WTC, K2FT and XC Modulating Condensing Boilers. USB-Connect Features: • Bluetooth Adaptor connects boiler to USB-Connect App. • English and Spanish Language. • Start-up, Troubleshoot and Service Wizards. • Data logs, site photos, service & status reports sent to cloud. • Alta Boiler Control firmware and default parameter updates.

Screenshots

USB Sharp2 screens
USB4 screens

Verdict

The call

The clearest difference is rating: USB at 4.2 against USB Sharp's 3.1. USB also leads on in-app purchases (none vs 6) and ads (none vs shown). On price, ratings volume, update cadence 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. USB Sharp sells 6 one-off in-app purchases. USB asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

USB holds the better App Store score, 4.2 against 3.1. Both are backed by a comparable volume of ratings — 18 and 16 respectively. Written reviews point the same way: 53% of USB Sharp's written reviews are positive against 75% of USB's.

UpkeepUpdate frequency

USB Sharp ships an update every 3 weeks, USB monthly. The most recent releases landed on September 21, 2026 and September 8, 2026 respectively.

Scorecard5 real differences · 5 level
USB Sharp versus USB: the parameters behind the verdict, then further details
ParameterUSB SharpUSB
PriceFreeFree
Rating3.1 (18 ratings)4.2 (16 ratings) — better
Positive reviews53.2% of reviews75.0% of reviews — better
Number of ratings18 — better16
Update frequencyEvery 3 weeks — betterMonthly
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.013.0
Further details — not scored
Size55 MB74 MB
Age rating4+4+
Developer锦文 游U.S. Boiler Company, LLC.

Customer experience

USB Sharp

All ratings18 ratings
Positive44.4%
Neutral11.1%
Negative44.4%
Written reviews111 reviews
Positive53.2%
Neutral6.3%
Negative40.5%

USB

All ratings16 ratings
Positive81.3%
Neutral0.0%
Negative18.8%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

In-app purchases

6 purchases

USB Sharp

One-time6
  • Remove ads$0.99
  • Music Player$0.99
  • Dropbox$0.99
Show 3 more
  • Video Player$0.99
  • SkyDrive$0.99
  • Full Version$2.99
None

USB

No in-app purchases

Questions

Is USB Sharp free?
USB Sharp is free to download, with in-app purchases available.
Is USB free?
USB is free to download, with no in-app purchases.
Which has better reviews, USB Sharp or USB?
USB is rated higher. USB Sharp averages 3.1 out of 5 from 18 ratings, while USB averages 4.2 from 16 ratings.
Do USB Sharp or USB have ads?
USB Sharp shows ads; USB does not.
Which is updated more often, USB Sharp or USB?
USB Sharp ships an update every 3 weeks, and USB monthly. Most recently, USB Sharp was updated on September 21, 2026 and USB on September 8, 2026.

Other comparisons