# TetherX vs USB

The clearest difference is rating: TetherX at 5.0 against USB's 4.2. TetherX also leads on review sentiment (91% vs 75%). USB's advantage is ratings volume (16 vs 3) and iOS requirement (13.0 vs 18.4). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

TetherX holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: USB has 16 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 91% of TetherX's written reviews are positive against 75% of USB's.

TetherX ships an update every 2 months, USB monthly. The most recent releases landed on September 19, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | TetherX | USB |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/tetherx/id1046299294/reviews)** | [4.2 (16 ratings)](https://appshunter.io/ios/app/usb-connect/id1563292212/reviews) |
| Number of ratings | 3 | **16** |
| Positive reviews | **90.9% of reviews** | 75.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | Free |
| Size | 3 MB | 74 MB |
| Requires iOS | 18.4 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Tether Technology Ltd](https://appshunter.io/developer/1046299293) | [U.S. Boiler Company, LLC.](https://appshunter.io/developer/608292333) |

## What reviewers say

### TetherX

[App page](https://appshunter.io/ios/app/tetherx/id1046299294)

This app provides unified monitoring and control of physical infrastructure, including video surveillance, access systems, and sensors. It offers real-time data, instant notifications, and secure management for professionals across various sites.

**Highlights:** Unified monitoring of video, sensors, and access, Real-time sensor data and environmental monitoring, Alarm status and instant push notifications, Access control management, Secure biometric authentication, Fast, native performance

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### USB

[App page](https://appshunter.io/ios/app/usb-connect/id1563292212)

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

**In-app purchases:** none


## Frequently asked questions

### Is TetherX free?

TetherX is free to download, with no in-app purchases.

### Is USB free?

USB is free to download, with no in-app purchases.

### Which has better reviews, TetherX or USB?

TetherX is rated higher. TetherX averages 5.0 out of 5 from 3 ratings, while USB averages 4.2 from 16 ratings.

### Do TetherX or USB have ads?

Neither TetherX nor USB shows ads.

### Which is updated more often, TetherX or USB?

TetherX ships an update every 2 months, and USB monthly. Most recently, TetherX was updated on September 19, 2026 and USB on September 8, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*