# SupplyMaster

> Remote control for immersion heaters and lighting schedules. (iPhone/iPad app by TIMEGUARD LTD.)

- Source: https://appshunter.io/ios/app/supplymaster/id1204680294 (this page in markdown: same URL + `.md`)
- Developer: [TIMEGUARD LTD](https://appshunter.io/developer/1204680293)
- Category: Utilities
- Price: Free
- Rating: 3.00/5 from 2 App Store ratings · 88 written reviews indexed
- Age rating: 4+
- Requires: iOS 11.0 · 18 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2017-02-14
- Data updated: 2026-06-09
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/supplymaster/id1204680294/reviews.md

## What is SupplyMaster?

Timeguard Supplymaster can be used to provide convenient, easy programming of your immersion heater or lighting from your phone or tablet. Changes to programmes can be made from any location, which will enable the user to save money by cancelling unwanted programmes during periods of unexpected absence. 
There are 4 operating modes, Auto, Permanent off, permanent on, and holiday. There are also advance and boost functions.
For use with the Timeguard FSTWiFi and FSTWiFiTGV WiFi controlled fused connection units.

## Key features

- Remote programming
- Energy saving
- Auto, Permanent Off, Permanent On modes
- Holiday mode
- Advance and Boost functions

## Recent user reviews (10 of 88)

All indexed reviews: https://appshunter.io/ios/app/supplymaster/id1204680294/reviews.md

### 1/5 — Support withdrawn?

*2026-02-02, version 1.7.4*

App no longer controls my Timeguard switch. Built in obsolescence? Just says “upgrade to FSTWIFITU”. Nope, will upgrade to another manufacturer that doesn’t dump customers with useless tech.

### 1/5 — very basic app

*2025-11-23, version 1.7.4*

it simply wont connect to my timeguard switch and keeps timing out when connecting to my wifi.. 2025 and we have Ai capabale of anything and here we are dealing with an app that feels like it was created on a zx spectrum from the 80’s.. who are these developer’s? 100% he is over 70

### 1/5 — Terrible app

*2025-11-17, version 1.7.4*

Trying to connect my cooker system via this app and it is terrible to set up if you change WiFi. I hate using it.

### 1/5 — Dreadful app

*2025-07-16, version 1.7.2*

This is so dire! It worked for a couple of months, then for no reason our user details were “invalid”. 
We tried everything, changed passwords, user names, etc. ad infinitum. 
The website has no sign in options, so we can’t change details there.
Therefore we have 2 very expensive, ordinary switches to control our Aga, as the WiFi element is unusable!

### 1/5 — Stay away

*2025-07-04, version 1.7.2*

Just bad, bad, bad. Nothing good to say! Minus five stars!

### 1/5 — Constantly goes down

*2025-04-28, version 1.7.2*

Unfortunately had these fused spurs for 6 years, the servers constantly go down so you can’t login to the app and the switches don’t work (currently down again). Stay away from this product, I regret it every month.

### 1/5 — Does not connect properly, no support

*2025-04-14, version 1.7.2*

The app is very outdated! It does not connect to the device, even with the correct Wi-Fi and password the app insists on not connecting. No support for this problem. Very bad app, old, without evolution, without technology.

### 1/5 — Dear Developers - Please read some of the comments here

*2025-01-10, version 1.7.1*

This App could be so much better. It’s very clunky, fiddly and i’m afraid tedious to navigate. However, it performs a solid function namely wifi timed power supply. Please could we finally have an overhaul / signifiant update?

### 2/5 — Ok when their servers are up and running but…

*2025-01-02, version 1.7.1*

The app is ok (apart from being very fiddly to setup) but I’ve noticed that their servers seem to regularly go down during public holidays and don’t get rebooted until somebody is back in the office - leaving you unable to control your device.

### 5/5 — Great helpline!

*2025-01-02, version 1.7.1*

I’ve used this app for a few years now and it’s generally reliable. When it occasionally fails the helpline number is answered straight away by a human being!

## Frequently asked questions about SupplyMaster

### What does the SupplyMaster app do?

The SupplyMaster app allows you to conveniently program and control your immersion heater or lighting directly from your phone or tablet. You can make changes to your schedules from any location, helping you save money by turning off unwanted programs when you're away.

### What are the key features of SupplyMaster?

Key features include remote programming of your heating and lighting, energy-saving capabilities by cancelling unwanted programs, and four distinct operating modes: Auto, Permanent off, Permanent on, and Holiday. It also offers advance and boost functions for added flexibility.

### Is SupplyMaster free to use?

Based on the provided information, the SupplyMaster app is free to use. There are no mentions of subscription fees or in-app purchases, suggesting it is a complimentary utility for compatible Timeguard devices.

### What devices is SupplyMaster compatible with?

The app is designed for use with the Timeguard FSTWiFi and FSTWiFiTGV WiFi controlled fused connection units. Ensure you have one of these compatible units to utilize the app's features.

### How can SupplyMaster help me save money?

You can save money by using the app to cancel unwanted heating or lighting programs when you are unexpectedly absent. This ensures that you are not wasting energy on heating or lighting your home when it's not necessary, leading to reduced utility bills.

## Version history (last 5 releases)

### 1.7.4 — 2025-10-22

Fix some known issues

### 1.7.3 — 2025-10-17

Some known issues have been fixed.

### 1.7.2 — 2025-03-04

Fixed some known issues

### 1.7.1 — 2024-08-30

Fix known issues

### 1.7.0 — 2023-06-08

Fixed some known issues

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## More apps by TIMEGUARD LTD

- [Programastat+](https://appshunter.io/ios/app/programastat-plus/id1331389599)
- [Newlec Heating](https://appshunter.io/ios/app/newlec-heating/id1441384690)
- [Newlec Timer](https://appshunter.io/ios/app/newlec-timer/id1441389924)

All apps by TIMEGUARD LTD: https://appshunter.io/developer/1204680293

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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 2026-06-09.*