AI Invoice Generator.
Invoicing for locksmiths.
Lockout, lock change or a full set after a break-in - say the job in one sentence and hand over a proper invoice before you leave the doorstep.
No signup, no card needed to try it.
Say it like you would say it
"Invoice Ms Riley 195 for the front door lockout: callout 65, gain entry and fit a new euro cylinder 130, due in 7 days"
That is the whole job. The AI writes the lines, deterministic code does every sum in exact pence, and the invoice is ready to send with your logo on it.
Emergency work, evening invoices
Every job urgent, every invoice late
Locksmithing is urgency work - the phone rings, you go. The invoicing has no such urgency, which is exactly why it slips.
The doorstep is the moment
The customer is right there, relieved, keys in hand. If the invoice is not, it becomes 'I'll send it over' - and doorstep goodwill does not survive a week.
Callout, labour, parts
A callout fee, the work, and the cylinder or handles on top. Itemised, it gets paid without a quibble; one round number gets questioned at 11pm prices.
Insurance jobs want it in writing
After a break-in, the insurer wants an itemised invoice for the claim. Scribbled totals slow everyone down - including your payment.
Instant professional templates
Send something that looks like you charge properly
An invoice that looks thrown together gets treated like one. Pick from 26 designs - these are the real ones, not pictures of them - and switch at any point, before or after you have written it. Your logo and colours go on top.
Luxury
Tradesman
Luxury Gold
Why your accountant can relax
The AI writes. It does not count.
Language models are good with words and unreliable with arithmetic, so DocMason only lets them do the first part. Every figure on a document you send is worked out by ordinary code, in exact pence, the same way every time.
It is the difference between a tool you check afterwards and one you can send without reading twice.
- VAT, discounts and totals calculated in code, never by the AI
- Money held in exact pence, so rounding cannot drift
- Every email sent on your behalf is stored in full, so you can read exactly what went out and to whom
- Your data hosted in the EU, never used to train AI models
FAQs
Questions from locksmiths, answered straight
The free tier, the maths, and how invoicing fits the way locksmiths actually work. Everything else is on the full page.
Something else on your mind? Ask a human.
Can I invoice on the doorstep?
Yes - say the job in one sentence on your phone and the invoice is ready before you have packed the van: itemised, VAT exact, your logo on it. Email it there and then; on the Growth plan it carries a card payment link through your own Stripe account.
Do emergency rates look right on the invoice?
Yes, because they are stated, not buried: a line that says 'emergency callout, 11pm' at its price reads as a rate, while a mystery total reads as a try-on. Customers quibble blurs, not stated rates - and every sum is computed in exact pence by code.
What about the customers who never pay?
On the Growth plan, QuoteChaser chases unpaid invoices for you: a polite nudge the day after the due date and a firmer reminder a week later, sent from your business name and stopping the moment you mark it paid. The awkward conversation stops being yours.
Is it really free?
Yes. Build and preview an invoice with no account at all, and create a free account when you want the PDF. The free plan includes 3 invoices and 3 quotes every month with all 26 designs - no card needed. Starter at 9.99 GBP a month makes them unlimited.
Does the AI do the maths?
No, and that is deliberate. The AI reads what you typed; plain deterministic code computes every total, discount and VAT figure in exact pence. AI is good at language and bad at arithmetic, so it only does the first one.
Want the whole picture? See everything the invoice generator does.
Your next invoice takes a minute
3 free invoices a month. Describe the job like you would say it, and see for yourself.