Many tradespeople still invoice with Word templates, Excel spreadsheets, or handwritten invoice books. It works, but it is slow, easy to lose track of, and there are no automatic reminders. WOPA handles all of that from WhatsApp.
| Feature | WOPA | Manual (Word / Excel / Paper) |
|---|---|---|
| Platform | Computer, notebook, or phone | |
| Price | Beta / founder pricing TBD | Free (your time is the cost) |
| Invoice creation | Message WOPA in plain English | Edit template, fill in details manually |
| Invoice delivery | PDF emailed to customer automatically | Email attachment, post, or hand-deliver |
| Payment collection | Manual bank transfer (sort code on PDF) | Bank transfer, cash, cheque |
| Payment reminders | Yes — automatic at 7, 14, 28 days | No — you have to remember and chase manually |
| VAT support | Yes — VAT, reverse VAT, CIS | You can add VAT to your template manually |
| Accounting / MTD | No | Manual record-keeping only |
| Setup time | Minutes. Send your details, start invoicing. | No setup, but each invoice takes time to create and send. |
| Best for | Tradespeople who want fast, consistent invoicing from their phone | Tradespeople who want full control over invoice format and layout |
With paper or spreadsheets, you have to remember who owes what and when to chase them. WOPA tracks every invoice and sends reminders at 7, 14, and 28 days automatically.
WOPA creates clean A4 PDF invoices with your business name, bank details, and a payment reference. No more inconsistent Word templates or handwritten receipts.
Finish the work, send a WhatsApp message, and the invoice goes out before you leave. No need to go home, open a laptop, and edit a spreadsheet.
WOPA shows a draft before sending. You check the customer, amount, and description, then confirm. Nothing goes out without your approval, same as writing it yourself.
Founder pricing for the first 200 waitlist signups. No card required today.
Reserve founder pricing