— For gas engineers · UK

Deposit on the boiler. Invoice the service before the kettle boils.

GlideQuote is the phone-first quoting and invoicing app for gas engineers: a deposit-and-balance quote for the install, a one-line invoice for the service, receipts on payment, and VAT that’s right on every document.

Download on the App StoreGet it on Google Play Free plan, no card. Pro is free for the first month, then from £4.17/month billed annually.
Why gas engineers use it

Built for installs and services

Deposit, then stages PRO

Deposit on the boiler install, balance on commissioning — or up to five stages with due dates. Mark each received; the balance updates itself.

Quote → invoice in one tap

Accepted quote becomes the invoice with the same items and client. Nothing retyped.

VAT right first time

VAT-registered? Your VAT number, rate and totals appear on every invoice automatically. Not registered? A clean, compliant invoice without VAT lines — and you switch VAT on the day you register.

Saved items & clients

“Annual service”, “landlord safety check”, “boiler install — labour”, parts — save them once, add them in two taps.

Site visits & call-backs PRO

Book the install day and the return visit against the job; they sync to your phone calendar and remind you.

Overdue chasing

Home shows what’s outstanding and what’s overdue; from any unpaid invoice, Remind client sends a ready-written reminder — amount due and your bank details — by WhatsApp, SMS or email.

How it works

From quote to commissioning

  1. Price it on site. Open a quote, add the boiler, labour and saved items, set the deposit and the balance.
  2. Send the PDF from the driveway. Share by WhatsApp, email or LINE with your logo and terms; the customer gets a proper document, not a text message.
  3. Accepted → invoice, schedule attached. Convert the quote in one tap; the invoice carries the deposit and stages, with your bank details on it.
  4. Mark each stage received. Deposit, then each stage as it’s paid; the running balance is always visible.
  5. Issue the receipt. Record part-payments or the balance; a receipt PDF is one tap.
Common questions

Gas engineers ask us

Can I take a deposit before starting?
Yes. On Pro you set a deposit on the quote; when the customer accepts, the invoice carries it as the first stage, due first. A refundable security deposit is handled separately and is never included in VAT totals.
Can I invoice an annual service in seconds?
Yes. Save “Annual service” as a line item and the customer as a client; the invoice is three taps and the PDF goes out by WhatsApp or email with your bank details on it.
Does it handle VAT?
Yes, on every plan including Free. Switch VAT on once with your registration details and every invoice carries your VAT number, the rate and the totals. Not registered yet? Leave it off and switch it on the day you register.
Can it send the same invoice every month automatically?
Not yet — there are no recurring invoices. What you can do today: save the job as a line item and the customer as a client, so the monthly invoice is three taps rather than a retype.
What does it cost?
Free: unlimited invoices and receipts, 3 quotes a month, your logo, VAT and bank details on every PDF, monthly and yearly reports — with a small GlideQuote watermark. Pro: £4.17 a month billed annually (£49.99 a year) or £6.99 month to month, and the first month is free.
Other trades
BuildersPlumbersElectriciansGas engineersRoofersPainters & decoratorsGardeners & landscapersCleanersHandymen

Ready to try it?Free plan, no card. Pro is free for the first month.

Download on the App StoreGet it on Google Play
Last updated: 9 October 2026