How GasTac Works
Three simple steps to go paperless. No training needed — if you can use a phone, you can use GasTac.
Download GasTac
Get the app on your phone or tablet. It takes less than a minute to set up your account and start using it on your next job.
Create Your Documents
Choose what you need — invoices, CP12 certificates, job notes. Fill in the details on-site using simple, clear forms designed for engineers.
Send to Your Customer
Hit send and your customer gets their paperwork straight to their inbox. No printing, no posting, no delays. Job done.

Plus built-in tools for every job
GasTac isn't just about paperwork. It's packed with tools that make your day easier.
Gas Rate Calculator
Calculate gas rates accurately on-site. No guesswork, no separate tools needed.
Pipe Sizing Calculator
Size gas pipes correctly every time with the built-in calculator.
Calendar & Job Notes
Manage your schedule and keep detailed notes with photos for every job.
Simple enough for anyone. Powerful enough for every job.
Start using GasTac today — it's free.
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