Master Gas is a new way to manage your gas business, making your working day more productive. So goodbye to paperwork, everything is handled in the app, no more hand written forms, scraps of paper and losing customer details. Here are some of the features

• Appointment Diary
Keep track of your customer appointments with a built-in diary with fast address lookup.

• Customer Database
Keep track of all your customers in one place. Store all contact information, past job history and important reminders for each of your customers and landlords.

• Gas Certificates and Forms
You can create professional Landlord Gas Safety Records (CP12), Maintenance forms, Jobsheets, Warning Notices, Breakdown Reports and Non-Domestic documents. Installation Commissioning, Oil CD10, Oil CD11, Legionella Risk Assessment and more.

• Invoicing
Get paid quickly with the built-in invoice tool. Create invoices, then print or email to the customer. No more waiting for payment, no more stamps, no more lost cheques.

• Estimates and Quotes
Create estimates and quotes for you customers from the App. Select from previous stock items or create ad-hoc new items. You can even copy the Estimate/Quote over to an invoice to save time.

• Purchase Orders
Send your suppliers a purchase order.

• Track Expenses
Keep track of your expenses on the go. It will cut down on sorting receipts for the Tax Return and your accountant will love it too.

• Record Mileage
Log down your mileage as you go. At the end of the year you will need this for your accountant. It could save you a small fortune!

• Customisable
You can add and change any of the lookup lists to suit your needs, add your own logo to the reports and certificates.

• Email
Email any of the gas forms, invoices or reminder letters from the app to your customer. This means you get all the documents to your customer quickly, leaving no delays for payment making your cashflow a pleasure. You can even email the same documents to yourself with an “Always CC” setting in the app.

• Printing
Print any of the gas forms, invoices, reminder letters or expense records from the app to an AirPrint printer.

• Dropbox integration
We have integrated with Dropbox, so you can upload all your documents to dropbox and access these on your computer. This feature works well if you want to batch print on your office computer.

• Dedicated Support Team
We have a dedicated support team waiting to answer your questions and help you when you need it.

We work really hard to make this app useful for you. We value any feedback you have and will try to accommodate as many ideas as possible. If you have a question please contact us, we are always pleased to receive your feedback.

What’s New

Version 2.9.8

- Signatures and Logo on Jobsheets

Ratings and Reviews

3.6 out of 5
21 Ratings

21 Ratings

Hire85 ,

Great but...

Great app, it does need some refining in places but looks like there hasn’t been an update in a year.. I’ve got the basic version and want to upgrade but there’s no hep on how to do that? I’ve even tried phone the support number but it just rings and rings?! Good app but not great support.

beacon heating ,

Great app, great support

I’ve just started using the master gas app on the base level and it was brilliant, I have since bumped up to the pro model and I’ve never done this on apps (bit of a technophobe). I initially had an issue with the account with it updating to the pro model (probably just me being impatient), so I sent a message over asking for assistance, in less than 5 mins I had a phone call and it all went through, very impressed with the speedy response.

Great app, great support.

bananabrutality ,

Ok but clunky

Wanted to like this as it seemed to tick all the boxes. So much so I bought pro. Unfortunately the reality is not up to expectations.

The app is really clunky and job addresses don’t flow through to worksheets and invoices meaning you have to input things multiple times, very time consuming.

Worst thing for me is the way the. “Support” team just totally ignore requests for help. Can’t even be bothered with a proper email response. Absolutely disgraceful.

Won’t be renewing this and may look to get a refund

Shame really because this had great potential .

Maybe this review may get a response but I’m not holding my breath.

Update , still not had the much promised manual next date due for landlords certs. So still impossible to do a professional cert in advance.

Developer Response ,

Thanks for taking the time to leave a review.

We would like to address your comments,

1. "Addresses don't flow on to worksheets and invoices" - If you enter a customer in to the app and save them they can then be used throughout the app in ANY document. You select the (+) button along side the name field and it shows you a list of all saved customers tap on the customer name and ALL fields are magically filled out. You can also add multiple sites to a customer, perfect for Landlords.

2. We have several ways of contacting us, in app, website, phone, twitter and Facebook. Sometimes your own email provider can mark a response as spam, so even though we ALWAYS reply, your own mail provider may have blocked it. Feel free to call instead, I'm sure we can help.

If we can provide a better means of support please do feel free to suggest we are always willing to discuss.

I'm sorry you didn't get along with the app, we do always offer a trial up front for you to check suitability up front before making any purchase. If you would like to contact us again and identify yourself I'm sure we can help further.


Stephen Lalor
48.5 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad and iPod touch.



Age Rating
Rated 4+
© Gas Installers Workmate Ltd


  • Family Sharing

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

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