# JG Underfloor

> App for controlling John Guest underfloor heating thermostats and timers. (iPhone/iPad app by Reliance Worldwide Corporation aust. Pty. Ltd..)

- Source: https://appshunter.io/ios/app/jg-underfloor/id1638011997 (this page in markdown: same URL + `.md`)
- Developer: [Reliance Worldwide Corporation aust. Pty. Ltd.](https://appshunter.io/developer/1638011999)
- Category: Utilities, Lifestyle
- Price: Free
- Age rating: 4+
- Requires: iOS 12.0 · 177 MB
- Languages: Arabic, Czech, Dutch, English, French, German, Hungarian, Indonesian, Italian, Japanese and 12 more
- Released: 2022-08-25
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/jg-underfloor/id1638011997/reviews.md

## What is JG Underfloor?

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.

## Key features

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

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/jg-underfloor/id1638011997/reviews.md

### 2/5 — Lots of software bugs

*2025-02-24, version 1.0.3*

I have seen the same problems as other reviewer’s comments. It gets stuck on manual mode at times and the ‘away’ function also leaves it on manual mode. The ‘learning’ function does not work at all. The people on the help desk appear to know less about this product than I do. For a reputable company, the quality of this app and the support given is extremely disappointing. JG, you need to get your act together.

### 2/5 — Seems unreliable

*2025-01-03, version 1.0.3*

Have the JG Underfloor app, but it's very unreliable.

1. Doesn't keep to the program/schedule when it's manually changed once. I used to be able to turn off/on to get it back, but that stopped working.

2. When you return from 'away' mode doesn't return back to schedule 

3. Setting scenes/automations is the only way to scheduling to work. 

4. FAQs don't address thermostat controls issues 

Can you provide some guidance on how to get the program functionality to work optimally?

### 1/5 — Background temperature

*2024-11-21, version 1.0.2*

Hi, 
I want set my temperature to a constant 17c background temperature and have put this temperature in the app all the way through the start, open and close doors to finish but in the morning the temperature is about 15.

Am I doing something wrong?

## Frequently asked questions about JG Underfloor

### What is JG Underfloor used for?

JG Underfloor is an app designed to connect to and control John Guest thermostats and timers for underfloor heating systems. It allows for easy zone control and configuration of both RF and hard-wired setups.

### Is JG Underfloor free to use?

Yes, JG Underfloor is available for free. The app does not have any associated costs for download or usage.

### What devices can I use JG Underfloor on?

JG Underfloor is compatible with iPhone and iPod devices. It is designed for iOS mobile platforms.

### How often is JG Underfloor updated?

The latest version of JG Underfloor is 1.0.3, and it was last updated on December 23, 2024. Updates are released periodically to improve functionality and compatibility.

### What is the age rating for JG Underfloor?

JG Underfloor has an age rating of 4+. This indicates it is suitable for users of all ages.

### Does JG Underfloor have ads?

No, JG Underfloor does not contain advertisements. Users can enjoy an ad-free experience while managing their heating system.

### What kind of heating systems does JG Underfloor support?

JG Underfloor supports the John Guest range of thermostats and timers for underfloor heating. It is designed to work with both RF (radio frequency) and hard-wired systems.

## Version history (last 3 releases)

### 1.0.3 — 2024-12-23

-Bug fixes to improve user experience.
-Performance improvements.

### 1.0.2 — 2022-11-08

Improved user experience and compatible with IOS16

### 1.0 — 2022-08-25

No release notes.

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## More apps by Reliance Worldwide Corporation aust. Pty. Ltd.

- [Reliance Valves Controls](https://appshunter.io/ios/app/reliance-valves-controls/id1638055548)

All apps by Reliance Worldwide Corporation aust. Pty. Ltd.: https://appshunter.io/developer/1638011999

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*