SmartScan Control vs JG Underfloor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SmartScan Control
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Control Thorlux SmartScan luminaires at the touch of a button. For use with Thorlux SmartScan Dongle or Scene Plate. Connect to any Thorlux SmartScan Dongle from any iOS device using iOS 8.0 and above. Unlimited Control Groups Luminaires can be linked together wirelessly enabling group control for dimming or scene setting. Multiple control groups can be configured within the app for flexibility. Scene names can be changed for easy reference. Instant Response Lumianires respond instantly to commands. New Colour Active technology It is possible to change the colour temperature of Thorlux Colour Active luminaires using the app. Colour temperatures between 3000K and 6500K can be selected using the colour temperature wheel.
JG Underfloor
Control your home's underfloor heating system with this intuitive app. Manage thermostats and timers for ultimate zone control and easy configuration of both RF and hard-wired systems.
- Connect to John Guest thermostats
- Manage timers
- Zone control
- Configure RF systems
- Configure hard-wired systems
- Intuitive user interface
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The JG Underfloor APP is designed to be an easy to use, intuitive solution for connecting to the John Guest range of thermostats and timers. Used for both RF and hard wired systems the app provides the user with ultimate zone control and ease of configuration.
Screenshots
Verdict
SmartScan Control and JG Underfloor are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
SmartScan Control ships an update every 17 months, JG Underfloor every 22 months. The most recent releases landed on October 29, 2026 and November 3, 2026 respectively.
| Parameter | SmartScan Control | JG Underfloor |
|---|---|---|
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| Update frequency | Every 17 months — better | Every 22 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.6 | 14.0 — better |
| Further details — not scored | ||
| Size | 16 MB | 226 MB |
| Age rating | 4+ | 12+ |
| Developer | Thorlux | Reliance Worldwide Corporation |
In-app purchases
SmartScan Control
No in-app purchases
JG Underfloor
No in-app purchases
Questions
Is SmartScan Control free?
Is JG Underfloor free?
Do SmartScan Control or JG Underfloor have ads?
Which is updated more often, SmartScan Control or JG Underfloor?
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