AI Invoicing App Builder for Bathroom Fitters
An invoicing tool shaped like your bathroom fitter: your services, your tax rate, your terms. Describe it once, then issue invoices from a page instead of a template file.
Who it's for
Owners of bathroom fitters who want invoices numbered, stored and searchable without paying per month for accounting software.
What you can build
- Clients with billing details and payment terms
- Invoices with line items for bathroom refits and walk-in showers, tax and totals
- A PDF you can download or email to the customer
- A paid / unpaid / overdue list with what is due this week
- Quotes that turn into an invoice once accepted
How bathroom fitters work
Bathroom fitters run projects that chain several trades in a tight order: strip out, first-fix plumbing and electrics, boarding, tiling, second fix and silicone. A refit can take one to three weeks, and the customer is often without a working bathroom for part of it. Suites and tiles are ordered weeks ahead, and accessible bathrooms add grab rails, level access and sometimes grant paperwork. Software helps by keeping sequencing, deliveries and customer updates in one place instead of one person's head.
What invoicing app for Bathroom Fitters has to handle
- Stage payments: deposit, first fix, tiling, completion.
- Suite and materials itemized separately from labor.
- Subcontractor costs tracked against the job.
- Variations such as moving a toilet added as extra lines.
A tip for bathroom fitters
Write every variation down before you do it and add it to the invoice straight away. Moving a waste pipe or adding a niche feels small on the day, but unrecorded changes are where bathroom jobs lose their margin.
A prompt to start from
Build an invoicing app for a bathroom fitter. Keep a list of clients with customer name, address and suite choice. Create invoices with a number, date, due date, line items for bathroom refits, walk-in showers and wet rooms, quantity, rate, tax and total. Generate a printable PDF, mark invoices paid or overdue, and show a dashboard of outstanding money. Add quotes that can be converted into an invoice, and store everything in a database.
Questions
Can I add variations mid-job?
Yes. Ask for variation lines that the customer approves and that appear on the next invoice.
Can it produce a PDF?
Yes. Ask for a printable invoice and Mythex builds a clean PDF layout with your details, logo and numbering, which you can download or attach to an email.
Does it handle tax?
Say which tax applies and at what rate and it is calculated per line and shown in the total. If you bill in more than one currency, say that too.
Do I need to know how to code?
No. You describe what you want in plain language and Mythex writes the code, shows a live preview, and lets you change things by chatting. The code editor and terminal are there if you ever want them.
Do I have to explain my business every time?
No. Mythex remembers who you are and how you work across every project, and follows the standing notes you set for a project, so you are not re-briefing it in each new chat. You can read, edit or switch all of it off.
How much does it cost?
There is a Free plan with daily credits, enough to build and publish a first version. Pro is $25/month and adds full code editing, GitHub export, custom domains, and credit top-ups.
Templates to start from
- Mortgage Calculator Template — Live amortization with PMI
- Finance Dashboard Template — Board-ready finance reporting
- Fintech Payments Site Template — Tiered pricing, blog, animations
- Plumbing Business Site Template — Quote calculator with lead dashboard
- Invoice Generator Template — Canvas invoicing with PDF export
- Expense Claims App Template — Receipt uploads with policy checks
- Sales ROI Calculator Template — Three-scenario models and branded PDFs
- Commission Calculator Template — Tiered comp plans and quota attainment
Guide
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