Gas Safe tracking, certificates, and jobs — one app
From CP12s to boiler installs, run your gas engineering business with software that tracks every certificate, every qualification, and every job — without the paperwork.
We get the challenges gas engineers face
Muster was built with input from gas engineers like you. Here's how we solve your biggest headaches.
Gas Safe renewals
Track Gas Safe IDs, ACS categories, and CCN qualifications for every engineer. Get alerts 90 days before expiry.
Certificates everywhere
Stop emailing PDFs. Generate CP12s, warning notices, and tightness test records from job data in the app.
Annual service reminders
Landlord gas safety certs expire every 12 months. Automated reminders mean customers rebook without you chasing.
Five tools for one job
Cert app, scheduling app, invoice app, GPS tracker, call answering. Muster replaces all five.
Features that make a difference
Every feature designed with gas engineers in mind.
Gas Safe Dashboard
Every engineer's Gas Safe ID, ACS categories, and expiry dates in one place. Alerts before anything lapses.
Digital Certificates
CP12 gas safety records, warning notices, tightness tests — generated from job data, sent to customers instantly.
Service Reminders
Automated annual reminders for landlord gas safety, boiler services, and maintenance contracts.
AI Receptionist
Never miss a boiler breakdown call. AI answers 24/7, books the job, and texts you the details.
Get Paid on Site
Send the invoice before you leave. Customers pay by card, Apple Pay, or bank transfer from their phone.
Route Planning
Plan your day across service visits. Less driving, more billable hours.
"I was using Gas Engineer Software for certs and a separate app for scheduling. Muster does both — plus call recording, GPS, and RAMS. Should have switched sooner."
Perfect for every type of job
Whether it's a quick repair or a major project, Muster handles it all.