Best quoting & invoicing apps for UK plumbers and gas engineers (2026)

Lighter tools for sending quotes and invoices and chasing payment, without a full job-management system.

3 options compared. Sorted by lowest starting price. Last checked 20 Oct 2026. We have not been paid by any vendor on this page.

Quick answer: The lowest paid starting price we verified is Traddie (from £9.99/mo). Free plans: Zoho Invoice. Cheapest isn't always best. Check the points below before you pick.

Side by side

ToolStarting priceFree trialSuitsChecked
Zoho Invoice
Free (£0).
Free plan Not needed (free) sole trader 20 Oct 2026
Traddie
Solo £9.99/mo; Pro £19.99/mo (+£7/mo per extra user); Team £49.99/mo (3 users).
from £9.99/mo 14 days sole trader, small firm 20 Oct 2026
YourTradebase
£29/mo; additional users £15/mo; annual = 2 months free. Plus VAT.
from £29/mo 30 days, no card sole trader, small firm 20 Oct 2026

How to choose

Good starting points for sole traders

Prices are as shown on each vendor's own pricing page on the date in the table, usually excluding VAT. "Not verified" means we couldn't confirm the price on the vendor's site. Spotted a change? Report it.

Get the weekly "What changed" email

One short email a week: price changes, new tools, and one rule or warranty change that matters to gas, heating and plumbing engineers. Free. Unsubscribe any time.

You'll get one email asking you to confirm (double opt-in). Nothing else is sent until you click it. It's free, it's weekly, and you can unsubscribe at any time with the link in every email. Emails are sent by Kit, our newsletter provider.