AI Invoicing App Builder for Personal Training Studios
Quotes and invoices for personal training studios, built to your own numbering and your own line items. Describe how you bill for one-to-one sessions and small group training and Mythex builds the app, PDF included.
Who it's for
Personal training studios invoicing from a word processor or a spreadsheet, and chasing payment from memory.
What you can build
- Clients with billing details and payment terms
- Invoices with line items for one-to-one sessions and small group training, tax and totals
- A PDF you can download or email to the client
- A paid / unpaid / overdue list with what is due this week
- Quotes that turn into an invoice once accepted
How personal training studios work
A personal training studio lives on its trainers' diaries. Early mornings, lunchtimes and evenings are packed, mid-afternoon is quiet, and January plus the weeks before summer bring a wave of new clients. Most revenue comes from prepaid session packs and monthly coaching plans, sold after a free or discounted consultation. Trainers juggle WhatsApp bookings, notebooks tracking sessions left, spreadsheets of programs and progress photos on their phones, which is exactly where lost sessions and awkward billing disputes start.
What invoicing app for Personal Training Studios has to handle
- Invoices should cover session packs, monthly coaching plans and one-off extras like nutrition plans.
- Pack expiry dates belong on the invoice so there is no argument about unused sessions later.
- Trainer commission or rent-a-space arrangements need to be calculated from sessions delivered.
A tip for personal training studios
Write your expiry and cancellation terms on every pack invoice, not only in the sign-up form. When a client disputes a forfeited session months later, an invoice they accepted showing the rule is the simplest record to point to.
A prompt to start from
Build an invoicing app for a personal training studio. Keep a list of clients with client name, phone and programme. Create invoices with a number, date, due date, line items for one-to-one sessions, small group training and programme design, 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 take monthly payments for coaching plans?
The app can generate monthly invoices and track what is paid. Collecting recurring card payments needs a payment provider account you connect yourself, such as Stripe.
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
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Guide
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