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Certably
Coming to Complete

Gas Safe records and CP12s

Landlord Gas Safety Records, service and warning notices. Part of Certably Complete, sharing one customer and site record with every other trade.

5 forms written
Built and tested.
Waiting on review
A Gas Safe registered engineer.
Inside Complete
£149 a year, no extra cost.

Not in the app yet

What the Gas set will cover

Every layout is written against the published standard, and a competent person in that trade reviews it — which is why the trades arrive one at a time rather than everything shipping at once. Where a form is released before that review, we say so against it rather than leaving you to assume.

Nothing below is in the app today. Buying Complete now does not unlock it early — it locks in the price.

Written, awaiting sign-off

These are built and tested, and are waiting on a Gas Safe registered engineer to check the layout against the current model form. Until that happens they do not appear in the app at all — a form you can fill in for an hour and then not issue is worse than one that is honestly missing.

  • Landlord Gas Safety Record (CP12)
  • Domestic Gas Service & Maintenance Record
  • Gas Warning Notice / Warning Advice Notice
  • Commercial Catering Safety Record (CP42)
  • Gas Installation Safety Record

Where a standard is amended we update the templates and note the change in the app.

Built for Gas Safe engineers

The paperwork, without the paperwork.

This is how the Gas forms behave. They are built and tested, and none of it reaches you until a Gas Safe registered engineer has signed the layouts off.

A record, not a verdict

Nothing in it is derived. Safe to use is the Gas Safe engineer's judgment under GSIUR 1998, and combustion figures are recorded rather than marked.

Not checked is not a pass

Every check is three-state, so an unanswered question and a recorded "no" can never be confused. That is the failure a tick box invites.

It will not issue half-answered

No Gas Safe number, or "not safe to use" with no defect described, and the record blocks until you have said what you found.

The warning notice is the next document

When an appliance is not safe to use, the GIUSP notice shares the same appliance and site record rather than being retyped.

Pricing

One app. Every trade.

Gas bought on its own elsewhere is £149.99 a year (GasCert, single user, checked 21 July 2026). It arrives inside Complete at £149 a year, alongside Electrical, PAT Testing and Fire & Emergency, at no extra cost when it does.

Electrical only

£99 /year

or £9.99 a month

All eight BS 7671 certificates — everything the app issues today.

Get the app

Every trade

£149 /year

or £19.99 a month

The same certificates as Electrical today. PAT, fire and gas land in it at no extra cost — buy it now only if you want the price locked in.

Get the app

Trades in Complete

Electrical is what Complete unlocks today. The other three land in it at no extra cost as each one is signed off.

How it works

Five simple steps. From arriving to sent.

This is the app you can download today, issuing electrical certificates. Gas works the same way once it lands.

  1. 1

    Arrive on site

    Open Certably and start a record, or duplicate last year's.

  2. 2

    Work through the appliances

    Every check is three-state, so an unanswered question can never be read as a pass.

  3. 3

    Record your judgment

    Safe to use is yours to decide. "Not safe" with no defect described will not issue.

  4. 4

    Sign on screen

    Capture the signature while you are still on site.

  5. 5

    Send to your client

    Issue the record and send the PDF. Not safe to use points at the warning notice.

Offline mode

Every step above happens on the device. Nothing has to reach us before you can carry on working.

Free until you issue

Building a certificate and reading the finished PDF costs nothing, with no time limit. The subscription buys step five.

Available now

Certify the next one from your phone

Certably is on the App Store. Download it, build a certificate and read the finished PDF before you pay anything — a subscription is what lets you issue it and send it to the client.

iPhone · iPad  ·  iOS 18.0 or later  ·  Works fully offline