Join over 6000 engineers who have gone paperless

Join over 6000 Engineers Who Have Gone Paperless

Gas Certificate App is the essential software for all Gas Engineers.


Domestic Gas Certificates
• Homeowner/Landlord Gas Safety Record
• Gas Warning Notice
• Gas Breakdown Record
• Gas Service Record
• Unvented Hot Water Cylinders
• Legionella Risk Assessment
• Gas Boiler System Commissioning Checklist

Non-Domestic Gas Certificates
• Non-Domestic Inspection Record
• Commercial Gas Safety Record
• Leisure Industry Gas Safety Record
• LPG Gas Safety Record
• Gas Testing And Purging Record
• Catering Record
• Service Record
• CP15

Domestic Oil Certificates
• CD/10 Oil Firing Installation
• CD/11 Oil Firing Servicing
• CD/12 Landlord Oil Installation Check
• CD/14 Warning and Advice Notice
• TI33D Domestic Oil Storage Tank Spillage & Fire Risk Assessment

• Power flush Certificate
• Job Sheet
• Installation/Commissioning Decommissioning Record

Invoicing / Quotes
• Build Invoices
• Build Quotes
• Build Estimates

Works Offline
Gas Certificate App also works offline, so you no longer need an internet connection.

Calendar / Diary
Easily issue jobs to other users and see a birds-eye view of all of your current jobs throughout the day, week or year.

Gas Rate Calculator
Easily calculate your Gas Rate Records (Imperial or Metric) from within the app.

Invoices & Estimates
Easily create Invoices and Estimates from directly within the app for your jobs and customers.

Client Records - safe and sound
Keep your customer records stored in our 248bit bank level encryption, so they are safe.

Job address - safe and sound
Keep your Job Address records stored in our 248bit bank level encryption, so they are safe.

Completed Certificates
View all saved certificates so you can access them whenever you need them.

View All paid / unpaid Invoices
View Estimates
Automated "next inspection" reminders

Add a personal touch
Upload your logo as well as your signatures directly to the application.

Automatically see the related certificates, invoices and quotes, images and files for the address.
When viewing a particular address, the system will automatically pull all of the Certificates, Invoices and Quotes related to that address. You can also upload your own attachments too.

Take a look!


1 Year Subscription | Unlimited Access to Certificates | Unlimited Certificates | Free Storage of Certificates | £64.99 Per year

1 Month Subscription | Unlimited Access to Certificates | Unlimited Certificates | Free Storage of Certificates | £6.99 Per month

Payments will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription that publication, where applicable. Please see our Privacy Policy ( and Terms and Conditions (

What’s New

Version 3.2.0

Bug fixes and stability improvements

Ratings and Reviews

4.4 out of 5
64 Ratings

64 Ratings


Best App that’s worked for us

We use this app for our family run business. The app and its features are just want we need and the built in calendar is perfect for organising our engineers with ease. They also amended the calendar based on our feedback.

bigtay1980 ,

Best one out there

I’ve had a few apps over the years and this one is the one to have, not only is the app really good but the guys behind it listen to what you say and actually change things to improve it

johnn2338 ,


I find the app Very user friendly and easy to navigate. Certificates are well presented for complete confidence that all relevance information has been noted.

App Privacy

The developer, Trade Apps LTD, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Identifiers

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Identifiers
  • Usage Data
  • Diagnostics

Privacy practices may vary based on, for example, the features you use or your age. Learn More


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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