TetherX vs USB
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TetherX
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.
- 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
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TetherX puts your entire physical infrastructure at your fingertips. Monitor video surveillance, control access systems, track sensors, and manage alarms across all your sites from a single, beautifully designed app. UNIFIED MONITORING - Live video feeds from all your cameras - Real-time sensor data and environmental monitoring - Alarm status and instant notifications - Access control management POWERFUL FEATURES - Push notifications for critical alerts - Secure biometric authentication (Face ID / Touch ID) - Fast, native performance BUILT FOR PROFESSIONALS - Control room operators - Security managers - Facility managers - System integrators TetherX connects to your existing infrastructure through our secure gateway, giving you complete visibility and control whether you're on-site or on the go. Requires a TetherX account. Visit tetherx.io to learn more.
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 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.
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.
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.
| Parameter | TetherX | USB |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | 4.2 (16 ratings) |
| Positive reviews | 90.9% of reviews — better | 75.0% of reviews |
| Number of ratings | 3 | 16 — better |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.4 | 13.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 74 MB |
| Age rating | 4+ | 4+ |
| Developer | Tether Technology Ltd | U.S. Boiler Company, LLC. |
Customer experience
TetherX
USB
In-app purchases
TetherX
No in-app purchases
USB
No in-app purchases








