About Drainly

Drainly is a simple, fast invoicing app built specifically for plumbers, gas fitters and tradies. It is developed and maintained by Tether Technologies, an Australian software company focused on practical tools for trade businesses.

Why We Built It

Most invoicing software is built for accountants, not tradies. It is complicated, expensive, and designed to be used at a desk — not on a job site. We built Drainly because plumbers told us they wanted something that just works: open the app, fill in the job, send the invoice, get paid.

The app is designed for sole traders and small plumbing businesses in Australia, Canada, the USA and South Africa. It handles GST, ABN, BSB and all the other things that matter to tradies in these markets.

What the App Does

• Creates professional PDF invoices and quotes in under 60 seconds
• Auto-calculates GST (10%) as a separate line item
• Saves customer details for reuse on future invoices
• Includes ABN, BSB and logo fields
• Works offline on site
• Converts quotes to invoices in one tap
• Tracks paid and unpaid invoices

Our Mission

To make invoicing so fast and simple that every tradie does it on-site, every time — so they get paid faster and spend less time on paperwork.

Contact

Have a question or feedback? Get in touch with us. We read every message.

Useful Links

• Download the app
• Pricing
• Free invoice templates
• Plumber business guides
• Privacy policy
• Terms of use