TetherX vs Cobalt Link+
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.
Cobalt Link+
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Cobalt Link+ is a flexible, cross-platform screen sharing and remote control solution. This application enables the remote control of your iPhone or iPad from a compatible display running Cobalt Link+ viewer software. This makes it possible to use apps and other features on the device in a dedicated setting, for example via a vehicle's touch screen whilst parked, or on the move. This may include in-car navigation apps, music streaming, making or receiving phone calls, and even playing video games when in a safe location. Communication between the display device and the mobile device may be conducted either wirelessly or via USB cable. Simply pairing them over Bluetooth is usually the first stage, or plugging a compatible cable from the display into your devices charging port. You can then access all your favourite apps in a safe, convenient and enjoyable way!
Screenshots
Verdict
The clearest difference is update cadence: TetherX at every 2 months against Cobalt Link+'s every 6 months. Cobalt Link+'s advantage is iOS requirement (13.0 vs 18.4). On price, ads, in-app purchases and device support 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 ships an update every 2 months, Cobalt Link+ every 6 months. The most recent releases landed on September 19, 2026 and January 28, 2026 respectively.
| Parameter | TetherX | Cobalt Link+ |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 90.9% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 2 months — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.4 | 13.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Tether Technology Ltd | VNC AUTOMOTIVE LIMITED |
In-app purchases
TetherX
No in-app purchases
Cobalt Link+
No in-app purchases









