Invoice App for Gas Fitters
Built for gas fitters who need to invoice fast and look professional.
Download Free on the App Store
Gas fitting invoice fields
Add your gas licence number and certification details to every invoice.
GST auto-calculated
10% GST shown as a separate line item. ATO-compliant.
Invoice on-site
Send the invoice before you leave the job. Get paid faster.
Saved customers
Save customer details once, reuse on every job.
Quotes and invoices
Send a quote, convert to invoice when approved.
Works offline
No internet needed on site.
Ready to Invoice Faster?
Free to start. No credit card. No signup. Just download and go.
Download on the App Store — Free to StartWhy Gas Fitters Choose Drainly
60-Second Invoices
Fill in the job details and tap send — your customer gets a professional PDF before you've packed up the van. No laptop, no office, no waiting.
Built for Your Phone
Drainly is iPhone-first. Create quotes on the way to a job, invoice the moment you're done, and share the PDF directly from your pocket.
Simple Pricing
Free to start, no credit card required. Upgrade to unlimited invoices and quotes for less than the cost of one coffee a month.
How Drainly Compares
Built for sole traders, not enterprise field-service teams.
| Feature | Drainly | Jobber | Tradify | ServiceTitan |
|---|---|---|---|---|
| Monthly price | Free – $6.99 | $49+/mo | $35/mo | $169+/mo |
| Built for sole traders | ✓ | ✗ | Partial | ✗ |
| Works offline | ✓ | Partial | Partial | ✗ |
| Setup time | <1 min | ~30 min | ~30 min | Hours |
| Mobile-first | ✓ | ✗ | ✗ | ✗ |
Need scheduling, dispatch and a full CRM? Use Jobber. Want to invoice in 60 seconds and get on with the job? Use Drainly.
Frequently Asked Questions
Also useful: plumbing invoice template · how to write an invoice · pricing