A new category of invoicing software has emerged in Spain: tools that work via WhatsApp, many with AI. Besides FacturaHub there's FactuPro (simple WhatsApp invoicing for freelancers), and other options advertising AI + WhatsApp such as Factunex, Breebill, ZumZum or IAhoy. The category is real and growing — but not all tools do the same thing, and the difference comes down to four concrete questions.
Question 1: is WhatsApp the interface or just the sending channel? Some programs create the invoice on their website (with forms) and use WhatsApp only to share the PDF. Others let you create it by chat. In FacturaHub, WhatsApp is a full management interface: create invoices in natural language, log expenses by sending a receipt photo (AI OCR), check who owes you, request reports and add clients. And everything you do by chat appears in the web dashboard instantly — chat gives you speed, the dashboard gives you full ERP control.
Question 2: what about expenses and Modelo 303? Invoicing is half the job; the other half is logging deductible expenses and filing quarterly IVA. A tool that only issues invoices leaves that work to you. FacturaHub crosses output and input IVA and generates the box-by-box Modelo 303 breakdown, ready for your accountant or the AEAT. If the tool you're evaluating doesn't log expenses with OCR or generate the 303, you're not comparing the same thing.
Question 3: Verifactu? From January 2027 (companies) and July 2027 (freelancers), invoicing software must generate Verifactu records for the AEAT. Ask each provider whether it's built in today or "coming". FacturaHub has it available now (Growth+ plans) and it activates without migrating data. Question 4: is the free plan real? FacturaHub's includes 3 documents per month with ALL features — AI, WhatsApp, OCR, Modelo 303, watermark-free PDF — no card, no expiry.
Honest summary: if you just want to issue 2 invoices a month and send them by chat, almost any option in the category works — even the AEAT's free app, though it has no WhatsApp or expenses. If you want to run the whole business conversationally — invoices, photo expenses, reports, Modelo 303 — plus a full dashboard and Claude/MCP for when you're at the computer, that combination today is only FacturaHub: the ERP that fits in your WhatsApp. Try it free and compare yourself: the first invoice takes 2 minutes.
The key difference: creating and managing by chat vs. sharing a form-made PDF. FacturaHub is a full interface.
Receipt photo → expense with input IVA. Box-by-box 303 breakdown every quarter. Not everyone does this.
Built in and available on Growth+. When mandatory in 2027, it activates without migration.
Three synced channels. WhatsApp for speed; dashboard for control; MCP for developers.
It depends on what you need. For issuing the odd invoice by chat, several options work (FactuPro, among others). To run the whole business via WhatsApp — invoices, OCR expenses, reports, Modelo 303 — with a full web dashboard and Verifactu built in, FacturaHub is the most complete option in the category.
It varies by provider — always ask before subscribing. FacturaHub has Verifactu built in today (Growth+ plans), activating without migration when it becomes mandatory in 2027.
For very low volumes it can work: it issues Verifactu invoices. But it doesn't log expenses, doesn't generate the Modelo 303 by crossing IVA, has no AI or WhatsApp. FacturaHub's free plan also costs €0 and includes all of that.
Yes: import your clients and keep invoicing with your sequential numbering. And all your data exports as CSV and PDF anytime — no lock-in, no commitment.