iUSB Pro vs USB
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iUSB Pro
Expand your Apple device's storage by backing up photos, videos, and contacts to an external device. Capture media directly to external storage and transfer files between devices, including non-Apple ones. Enjoy media stored on your external drive.
- Backup photos and videos
- Backup contacts
- Save media directly to external storage
- Transfer files between devices
- Play media from external storage
- Expand device storage
Read full descriptionHide full description
This app will allow you to backup photos and contacts, transfer files, take pictures and videos without using internal storage and more. This app will ONLY work with the external backup device it was designed for. If you do not have that device, this app will not do anything. With this app you can: Backup all of your photos and videos with one tap, or select specific photos and videos to backup. Backup all of your contacts. Take pictures and record videos that save directly to your external device without using internal storage on your Apple device. Transfer photos and videos from other devices, including non-Apple devices, to your Apple device. Play movies and television shows saved on your external device. Save files to the external device or transfer files on to your Apple device. If you are looking for a way to expand the storage of your apple device, save the pictures and videos on your apple device, or transfer between devices using different operating systems, this app is the perfect solution. Once you have the recommended external storage device, download this app and get started!
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 review sentiment: USB at 75% against iUSB Pro's 14%. USB also leads on rating (4.2 vs 2.6) and update cadence (monthly vs every 3 months). iUSB Pro's advantage is ratings volume (1.1K vs 16) and iOS requirement (9.0 vs 13.0). 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
USB holds the better App Store score, 4.2 against 2.6. That said, the two scores are not equally well evidenced: iUSB Pro has 1.1K ratings behind it against 16, so its average is the more settled of the two. Written reviews point the same way: 14% of iUSB Pro's written reviews are positive against 75% of USB's.
iUSB Pro ships an update every 3 months, USB monthly. The most recent releases landed on September 24, 2026 and September 8, 2026 respectively.
| Parameter | iUSB Pro | USB |
|---|---|---|
| Price | Free | Free |
| Rating | 2.6 (1.1K ratings) | 4.2 (16 ratings) — better |
| Positive reviews | 14.0% of reviews | 75.0% of reviews — better |
| Number of ratings | 1.1K — better | 16 |
| Update frequency | Every 3 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 21 MB | 74 MB |
| Age rating | 4+ | 4+ |
| Developer | Shenzhen Feitianxia Technology Co, Ltd. | U.S. Boiler Company, LLC. |
Customer experience
iUSB Pro
USB
Bugs and requests
iUSB Pro
Reported bugs
4 issues- Doesn't work on iOS 11 or iPhone 8/X
- Folders show as empty even when files are present
- Can't transfer large videos or lots of small files
- Corrupts SD card and makes it unusable
Requested features
4 requests- Add support for Files app on iOS 11
- Improve music playback features
- Add option to open multiple files at once
- Provide better file management tools
USB
Not enough reviews yet to summarise bugs or requests.
In-app purchases
iUSB Pro
No in-app purchases
USB
No in-app purchases
