JG Underfloor vs Fresh Mango JIM
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
Fresh Mango JIM
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Fresh Mango Technologies provides its JIM App for the exclusive use of Retainer clients. With the app, clients can make an IT support request 24/7/365. It’s incredibly simple to use and demonstrates Fresh Mango’s continued commitment to making technical support as simple as possible for our clients.
Screenshots
Verdict
The clearest difference is update cadence: Fresh Mango JIM at every 7 months against JG Underfloor's every 22 months. 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.
JG Underfloor ships an update every 22 months, Fresh Mango JIM every 7 months. The most recent releases landed on October 24, 2026 and October 12, 2026 respectively.
| Parameter | JG Underfloor | Fresh Mango JIM |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| Update frequency | Every 22 months | Every 7 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 14.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 226 MB | 26 MB |
| Age rating | 12+ | 4+ |
| Developer | Reliance Worldwide Corporation | Fresh Mango Technologies (UK) Ltd |
In-app purchases
JG Underfloor
No in-app purchases
Fresh Mango JIM
No in-app purchases
Questions
Is JG Underfloor free?
Is Fresh Mango JIM free?
Do JG Underfloor or Fresh Mango JIM have ads?
Which is updated more often, JG Underfloor or Fresh Mango JIM?
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