FairInvoice vs Zervant
Zervant offers a free generator too, so on the surface the two look similar. The difference shows up the moment you want to save an invoice, reuse it next month or put your own logo on it — on Zervant that sits behind their paid plans, billed monthly.
FairInvoice's Pro tier is one £12/year payment. There is no recurring card charge to remember, and the price you sign up at is the price you keep.
The free tier is genuinely unlimited either way here: no cap on PDFs, no account, and no watermark beyond a small footer line.
Side by side
| FairInvoice | Zervant | |
|---|---|---|
| Cost | Free forever; Pro £12/year early-bird | Free generator; saving, reuse and branding on paid plans |
| Sign-up required | No — free tier needs no account | Yes for saved invoices |
| Subscription or one-off | One annual payment | Monthly billing |
| Built for | UK sole traders and trades | General small-business invoicing |