AI Invoicing App Builder for PR Agencies
Quotes and invoices for PR agencies, built to your own numbering and your own line items. Describe how you bill for media relations and press releases and Mythex builds the app, PDF included.
Who it's for
PR agencies 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 media relations and press releases, 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 PR agencies work
A PR agency sells relationships and results that are hard to measure. Account teams pitch journalists, draft press releases, prep spokespeople and chase coverage, usually on monthly retainers with occasional project fees for launches or crises. Work spikes around product launches, trade shows and bad news. Media lists often live in one person's spreadsheet, coverage is clipped into slide decks, and client approvals happen over long email threads, so a shared system for contacts, coverage and reporting saves real hours.
What invoicing app for PR Agencies has to handle
- Monthly retainer invoices alongside one-off project fees for launches or events.
- Pass-through costs like wire distribution, media monitoring or event venues billed with or without markup.
- Hours logged against a retainer so over-servicing is visible.
- Invoices grouped by client entity when one company has several brands.
A tip for PR agencies
Track hours against every retainer even if you bill a flat fee. Over-servicing is the silent margin killer in PR, and the data gives you evidence when it is time to renegotiate scope with a client who has doubled their asks.
A prompt to start from
Build an invoicing app for a PR agency. Keep a list of clients with client name, campaign and journalist contact. Create invoices with a number, date, due date, line items for media relations, press releases and crisis comms, 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 the invoicing app show which retainers we are over-servicing?
If time is logged against each client, the app can compare hours used with hours the retainer covers. That makes it clear which accounts need a scope conversation.
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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- 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
Guide
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