uDisk vs USB
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
uDisk
Transform your iOS device into a portable USB drive. Easily transfer files between your device and computer via Wi-Fi or iTunes. Browse, play, and edit various file types directly on your phone or tablet.
- Use iOS device as USB disk
- Wi-Fi file transfer
- iTunes File Sharing
- Browse various file types
- Play music and video
- Edit text files
- Create directories and sort files
Read full descriptionHide full description
Let your iOS device become a USB disk ! You can use it to transfer files between iOS device and computer by Wifi or iTunes File Sharing. The uDisk support various files browse, music and video play, and text file editing. Tap the toolbar buttons you can view the wifi address, create a directory, sort the files, and change the view mode. Long press the file item, you can move, rename, email and delete the file. Enjoy it ! If any question and suggestion, please contact czh0766@163.com.
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.
- 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 descriptionHide 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
Verdict
The clearest difference is in-app purchases: USB at none against uDisk's 1. uDisk's advantage is ratings volume (233 vs 16) and review sentiment (84% vs 75%). On price, rating, update cadence and ads 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. uDisk sells 1 one-off in-app purchase. USB asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.3 for uDisk against 4.2 for USB. That said, the two scores are not equally well evidenced: uDisk has 233 ratings behind it against 16, so its average is the more settled of the two. Written reviews are what separate them: 84% of uDisk's written reviews are positive against 75% of USB's.
uDisk ships an update every 2 months, USB monthly. The most recent releases landed on September 17, 2026 and September 8, 2026 respectively.
| Parameter | uDisk | USB |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (233 ratings) — better | 4.2 (16 ratings) |
| Positive reviews | 83.7% of reviews — better | 75.0% of reviews |
| Number of ratings | 233 — better | 16 |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 20 MB | 74 MB |
| Age rating | 4+ | 4+ |
| Developer | Shenzhen Brown Bear Technology Co., LTD | U.S. Boiler Company, LLC. |
Customer experience
uDisk
USB
Bugs and requests
uDisk
Reported bugs
6 issues- Cannot save files manually
- Material does not always show
- Does not work after initial use
- Cannot rotate screen
- Does not transfer videos from phone
Show 1 moreShow fewer
- No permissions requested for file access
Requested features
2 requests- App should be pre-loaded on the thumbdrive
- More clarity on app functionality and safety
USB
Not enough reviews yet to summarise bugs or requests.
In-app purchases
uDisk
- Pro Version$3.99
USB
No in-app purchases
