SupplyMaster vs CertSuite
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SupplyMaster
Control your immersion heater or lighting remotely via your phone or tablet. Save money by adjusting schedules from anywhere, ensuring you only use energy when needed. Offers multiple operating modes for flexible control.
- Remote programming
- Energy saving
- Auto, Permanent Off, Permanent On modes
- Holiday mode
- Advance and Boost functions
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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.
CertSuite
This app assists electricians and inspectors in generating professional reports and certificates for various electrical installations. It supports standards like BS7671, Amendment 2, and specific certifications for EV charging, fire alarms, and emergency lighting. It requires login credentials from a company account.
- Generate electrical reports and certificates
- Supports BS7671 and Amendment 2
- Certifies EV charging points
- Includes fire alarm and emergency lighting reports
- Companion to cloud-based service
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CertSuite helps electricians and electrical inspectors produce high quality reports and certificates. It covers EIC, EICR, MEW (BS7671, including Amendment 2) and lots more such as EV Charging Points, Fire Alarms and Emergency Lighting. This is a companion app to the CertSuite Cloud-based service, and so you must log on using the account credentials given to you by your company.
Screenshots
Verdict
The clearest difference is review sentiment: CertSuite at 36% against SupplyMaster's 11%. CertSuite also leads on update cadence (fortnightly vs every 5 weeks). On price, ads, in-app purchases and monetization model 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.
SupplyMaster ships an update every 5 weeks, CertSuite fortnightly. The most recent releases landed on June 9, 2026 and August 25, 2026 respectively.
| Parameter | SupplyMaster | CertSuite |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) — better | — |
| Positive reviews | 11.4% of reviews | 36.4% of reviews — better |
| Number of ratings | 2 — better | — |
| Update frequency | Every 5 weeks | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 18 MB | 132 MB |
| Age rating | 4+ | 4+ |
| Developer | TIMEGUARD LTD | Megger |
Customer experience
SupplyMaster
CertSuite
In-app purchases
SupplyMaster
No in-app purchases
CertSuite
No in-app purchases
