# JG Underfloor vs RIoT System

The clearest difference is update cadence: RIoT System at every 3 months against JG Underfloor's every 22 months. JG Underfloor's advantage is iOS requirement (14.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

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

JG Underfloor ships an update every 22 months, RIoT System every 3 months. The most recent releases landed on October 24, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | JG Underfloor | RIoT System |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 22 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 226 MB | 38 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Reliance Worldwide Corporation](https://appshunter.io/developer/1638011999) | [RF Solutions Ltd](https://appshunter.io/developer/1611328173) |

## What reviewers say

### JG Underfloor

[App page](https://appshunter.io/ios/app/jg-underfloor/id1638011997)

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.

**Highlights:** Connect to John Guest thermostats, Manage timers, Zone control, Configure RF systems, Configure hard-wired systems, Intuitive user interface

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

**In-app purchases:** none


### RIoT System

[App page](https://appshunter.io/ios/app/riot-system/id6737235434)

**In-app purchases:** none


## Frequently asked questions

### Is JG Underfloor free?

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

### Is RIoT System free?

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

### Do JG Underfloor or RIoT System have ads?

Neither JG Underfloor nor RIoT System shows ads.

### Which is updated more often, JG Underfloor or RIoT System?

JG Underfloor ships an update every 22 months, and RIoT System every 3 months. Most recently, JG Underfloor was updated on October 24, 2026 and RIoT System on October 8, 2026.

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