GasPro vs Gas Certificate App

GasPro 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.

Last checked 20 Oct 2026. Neither vendor has paid to appear here or to be ranked.

Side by side

	GasPro	Gas Certificate App
Starting price	from £7.99/mo	from £20/mo
Price details (from the vendor page)	£7.99/mo or £79.99/yr for the first engineer; extra engineers £5.99/mo or £59.99/yr each.	£20 + VAT per user per month, or £216 + VAT per user per year. One plan, no feature tiers.
Free plan	No	No
Free trial	14 days, no card	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: "Gas certificates incl. CP12"	Yes: "CP12 / LGSR and other gas records"
Price checked	20 Oct 2026	20 Oct 2026
Listed features	Gas certificates incl. CP12 Powerflush, TMV and job sheet forms Low-cost per-engineer add-ons	CP12 / LGSR and other gas records Quotes and invoices included Customer and property records iOS, Android and web
Price source	GasPro pricing page	Gas Certificate App pricing page

Which to pick

Built from the table above, not from hands-on testing. We haven't used either product on real jobs.

Pick GasPro if…

you want the lower starting price: GasPro starts with from £7.99/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 GasPro: Gas certificates incl. CP12; Powerflush, TMV and job sheet forms; Low-cost per-engineer add-ons. (Gas Certificate App may offer some of them too; our list isn't exhaustive.)

Visit GasPro

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. (GasPro may offer some of them too; our list isn't exhaustive.)

Visit Gas Certificate App

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, GasPro or Gas Certificate App?

GasPro has the lower starting price: GasPro starts with from £7.99/mo and Gas Certificate App from £20/mo, as shown on the vendors' pricing pages (checked 20 Oct 2026).

Does GasPro or Gas Certificate App have a free plan?

GasPro: no, per its pricing page. Gas Certificate App: no, per its pricing page.

More comparisons

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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