i vs USB
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
i
Easily manage all your files on iOS devices. Transfer documents, photos, music, and videos between different devices and platforms. Offers backup for contacts and camera roll, and supports a wide range of file formats.
- File management for iOS
- Cross-platform file exchange
- Backup contacts and camera roll
- Play videos and music
- Preview images
- Supports wide file formats
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The i-FlashDevice is the best way to manage all your files on iOS devices,Exchanges files with different devices & platforms with ease. 1.Backup Contacts and Camera Roll. 2.Play Videos,Musics. 3.Preview Images,World. Supported File Formats: Document:DOC,XLS,PPT,TXT,else; Image:JPG,JPEG,BMP,GIF,else; Audio:MP3,AAC,AIF,else; Video:MP4,MOV,MKV,AVI,FLV,RMVB,ELSE;
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
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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 i's 15%. USB also leads on rating (4.2 vs 2.3) and update cadence (monthly vs every 3 months). i's advantage is ratings volume (789 vs 16) and iOS requirement (8.0 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 2.3. That said, the two scores are not equally well evidenced: i has 789 ratings behind it against 16, so its average is the more settled of the two. Written reviews point the same way: 15% of i's written reviews are positive against 75% of USB's.
i ships an update every 3 months, USB monthly. The most recent releases landed on August 24, 2026 and September 8, 2026 respectively.
| Parameter | i | USB |
|---|---|---|
| Price | Free | Free |
| Rating | 2.3 (789 ratings) | 4.2 (16 ratings) — better |
| Positive reviews | 15.0% of reviews | 75.0% of reviews — better |
| Number of ratings | 789 — 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 | 8.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 89 MB | 74 MB |
| Age rating | 4+ | 4+ |
| Developer | ShenZhen 0101 Technology Co.,Ltd | U.S. Boiler Company, LLC. |
Customer experience
i
USB
Bugs and requests
i
Reported bugs
4 issues- App crashes on launch
- Unable to connect to device
- Corrupted files after transfer
- Inconsistent behavior when viewing media
Requested features
4 requests- Add support for more file types
- Improve video playback functionality
- Provide better instructions and troubleshooting
- Optimize app for latest iOS versions
USB
Not enough reviews yet to summarise bugs or requests.
In-app purchases
i
No in-app purchases
USB
No in-app purchases
