Gas Engineer Software (GES) vs Gas Certificate App
Gas Engineer Software (GES) and Gas Certificate App are both CP12 certificate apps in the GasStack directory. This page compares them using only what's in our listings: prices copied from each vendor's pricing page on the date shown, plus the features and trial details we recorded. Where we don't have a fact, we say so rather than guess.
Side by side
| Gas Engineer Software (GES) | Gas Certificate App | |
|---|---|---|
| Starting price | from £18/mo | from £20/mo |
| Price details (from the vendor page) | Starter £19/user/mo monthly (£18 on annual); Core £25 (£23 annual); Pro £32 (£30 annual). Ex VAT. | £20 + VAT per user per month, or £216 + VAT per user per year. One plan, no feature tiers. |
| Free plan | No | No |
| Free trial | Yes (length not stated on pricing page) | 14 days, no card |
| Suits | sole trader, small firm | sole trader, small firm |
| Trades | gas, heating, plumbing | gas, heating |
| Certificates in our feature list | Yes: "CP12 / landlord gas safety records" | Yes: "CP12 / LGSR and other gas records" |
| Price checked | 20 Oct 2026 | 20 Oct 2026 |
| Listed features |
|
|
| Price source | Gas Engineer Software (GES) pricing page | Gas Certificate App pricing page |
Which to pick
Pick Gas Engineer Software (GES) if…
- you want the lower starting price: Gas Engineer Software (GES) starts with from £18/mo, Gas Certificate App from £20/mo (both checked on the vendors' pricing pages). That's the cheapest plan each shows, so compare the plan you'd actually use.
- you need any of these, which are in our feature list for Gas Engineer Software (GES): CP12 / landlord gas safety records; Service records and tightness tests; Automated service reminders (Core and up); Quotes, invoices and scheduling; Web portal plus mobile app. (Gas Certificate App may offer some of them too; our list isn't exhaustive.)
Pick Gas Certificate App if…
- you need any of these, which are in our feature list for Gas Certificate App: CP12 / LGSR and other gas records; Quotes and invoices included; Customer and property records; iOS, Android and web. (Gas Engineer Software (GES) may offer some of them too; our list isn't exhaustive.)
Before you choose
- Check it has every form you issue (CP12, warning notice, service record, commissioning, tightness test).
- Check it works offline: plant rooms and cellars have no signal.
- Look at the per-user price if you will add engineers later.
- Check whether reminders and invoicing are on the cheapest plan or only higher tiers.
Which is cheaper, Gas Engineer Software (GES) or Gas Certificate App?
Gas Engineer Software (GES) has the lower starting price: Gas Engineer Software (GES) starts with from £18/mo and Gas Certificate App from £20/mo, as shown on the vendors' pricing pages (checked 20 Oct 2026).
Does Gas Engineer Software (GES) or Gas Certificate App have a free plan?
Gas Engineer Software (GES): no, per its pricing page. Gas Certificate App: no, per its pricing page.
More comparisons
- Checker (formerly Gas Checker) vs Gas Engineer Software (GES)
- GasPro vs Gas Certificate App
- Gas Engineer Software (GES) alternatives
- Gas Certificate App alternatives
- All CP12 certificate apps compared
Prices are as shown on each vendor's own pricing page on the date shown, usually excluding VAT, and can change. Always check before you buy. Spotted something wrong? Report a correction.
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