Best free AI tools for tradespeople in the UK (2026 guide)

You do not need a paid subscription to get a first draft of a quote, a chaser, or a message to a customer. A free chat tool in the browser will do that job, as long as you bring the facts and you read what comes back. This is not a league table. There is no score, and no claim that one app wins for every trade. These are the free starting points that cover the work.

Shaun, 20+ years in UK construction, uses a chat tool for the wording and keeps the numbers in his own notes. We search the AI world every week so you don't have to. The allowances on free plans move. Check the provider's own pricing page on the day you sign up, and do not trust a message cap you saw on a blog last month.

What "free" should mean for you

Free, for this guide, means you can open an account and do ordinary text work without paying. That is quotes, invoices, customer messages, and tidying site notes. It does not mean unlimited file uploads, unlimited pictures, or a promise that the same model will still be on the free plan next month.

Four names are enough to start:

• ChatGPT (opens in a new tab) from OpenAI
• Gemini (opens in a new tab) from Google
• Copilot (opens in a new tab) from Microsoft
• Claude (opens in a new tab) from Anthropic

Each has a free way in, and each sells a paid plan for heavier use. This page does not list prices or message caps. Those figures change, and copying a number from memory would be a guess. Open the pricing or help page on the site itself if you are about to rely on a limit.

Pick one and stay with it for a week. Switching every day teaches you the buttons, not the job. If the free plan starts refusing long pastes, shorten the paste. You rarely need to send a whole specification. You need the notes for this one job.

What belongs in the tool, and what does not

The tool is for sentences. Your notebook, or a simple list on your phone, is for the facts. Before you open the app, write down the job address or a job name you will recognise, what the customer asked for, the price you have already decided, and what is not included.

Do not paste:

• a full card number, or a customer's bank login
• a one-time code from a text
• a Gas Safe, NICEIC, or other registration number you have not checked on the public register
• medical details, or anything else a customer told you in confidence that the quote does not need

A name, a town, and the work they want is usually enough. If the message does not need the house number, leave the house number out. You can add it back in your own email.

Read the privacy settings in the app before you paste a customer's phone number. Some tools let you turn off training on your chats, and some do not. This guide will not tell you which switch is where, because the screens change. Look for it once, on a quiet evening, not in a customer's hallway.

A phone is already half the kit

The other free tool is the one in your pocket. Voice typing on an iPhone or an Android phone will take a site note while your hands are dirty. Talk in short lines: room, what you saw, what you are pricing, what you are not doing. Then paste that note into the chat tool with a prompt that forbids invented measurements.

You do not need a separate transcription subscription for that. If the voice note mangles a word, fix the word before you ask for a customer email. "Multifinish" that becomes "multi finish" is a small fix. A measurement that becomes a different number is not small, so read the figures out loud against the note.

Photos of the job stay on your phone until you choose to send them to the customer. A chat tool does not need the picture to write "we will hack off the loose plaster and reskim". If you do upload a photo, say what you want from it, such as a list of what is visible, and then check that list against the wall. The photo is not a measure.

How to get a useful answer the first time

A vague question gets a vague essay. A prompt with your facts, and a ban on guessing, gets something you can edit. Tell it the country, the trade, and the format. Tell it to use pounds and UK English. Tell it to leave a blank in square brackets when a fact is missing, instead of filling one in.

This prompt is the one to reuse. Change the brackets. Do not let it choose the price.

You are helping a UK tradesperson write a customer message. UK English. Use pounds. Do not invent prices, measurements, dates, product names, or guarantees. If a fact is missing, write [missing: what] and leave it blank.

Trade: [for example plasterer]
What they asked for: [their words]
What I will do: [your scope]
What I will not do: [exclusions]
Price I have decided: £[amount, or "not priced yet"]
How I want paying: [for example half before materials, the rest on completion]

Write a short message I can send by text or email. Put any price in the first lines. No filler.

If the draft adds "fully guaranteed" or "all making good included", delete that sentence unless you meant it. The tool likes tidy promises. Tidy is not the same as true.

When the first draft is the wrong shape

Sometimes the words are right and the shape is wrong. Too long for a text. Too stiff for a customer you have already met. Too casual for a commercial client who asked for a written quote. Do not start again from the notes. Hand the draft back.

Rewrite this message. Keep every price, date, measurement, and exclusion exactly as written. Do not add promises. UK English.

Make it: [a short text / a plain email / a one-page quote]
Who it is for: [a homeowner I have met / a site manager I have not met]

Message:
[paste your draft]

Read the result against the original, line by line, for numbers. That check takes a minute. It is the minute that matters.

One tool is enough until it is not

A second app is worth opening when the first one keeps missing the point, or when the free plan blocks you on a normal day. Try the same prompt in a second tool from the list above, with the same notes. Compare the two drafts. Keep the one that left your exclusions alone.

Here are two drafts of the same message. Do not merge them into a new version yet.

List:
1. Any price, date, or measurement that differs between them.
2. Any promise that appears in one draft and not the other.
3. Which draft is shorter.

Draft A:
[paste]

Draft B:
[paste]

You still pick the words. The comparison only shows you what changed. If both drafts invented a start date, neither is ready.

What a free tool will not do

It will not know if you are VAT registered. It will not know your day rate, your travel, or that the customer wants the hall finished before a family party. It will not make a risk assessment true, and it will not check a registration number. Those stay with you. The pages on quoting and invoices go further on the wording. The page on RAMS covers what a chat tool must not sign off.

If a tool starts asking you to pay in the middle of a normal message, stop and look at what you asked for. A long upload, a pile of pictures, or a "research" button is often the thing that sits outside the free plan. Ordinary text usually does not.

Keep a copy of what you sent the customer, in your email or your usual text thread. The chat history is not your filing system. Accounts get closed, apps change, and a dispute in six months will not be settled by scrolling a chatbot.

A last prompt, for the note you dictate in the van

This one is for the voice note, before any customer sees it.

Turn these rough notes into a job list I can check. UK English. Do not add tasks I did not mention. Do not add prices. If a measurement is unclear, mark it [check].

Notes:
[paste the voice note after you have fixed obvious mistakes]

Then price the list yourself. The free tool has done its job when the list is clear and the numbers are still yours.

The UK Trades AI Prompt Pack is free when you sign up to the weekly email: 25 copy-paste prompts for quotes, chasing payment, tax admin, and customers. The signup is on the home page.