A new software category has emerged in Spain: invoicing by talking to an AI. Within it there are two approaches. The first: WhatsApp bots — FactuPro (simple invoicing for freelancers) and other options advertising AI + WhatsApp such as Factunex, Breebill, ZumZum or IAhoy. The second: talking to a full AI — FacturaHub's approach, where you connect your account to Claude via MCP or use the AI dashboard. Full transparency: FacturaHub had a WhatsApp bot and retired it — a bot inside a messaging chat is a cut-down AI, without long context and bound to the platform's rules. Whichever you choose, the real difference comes down to four concrete questions.
Question 1: does the chat create the invoice or just send it? Some programs create the invoice on their website (with forms) and use chat only to share the PDF. Others let you create it conversationally. In FacturaHub you describe the work in natural language — to Claude or in the dashboard — and AI creates the invoice, logs expenses from a receipt photo (OCR), tells you who owes you and generates reports. And everything appears in the dashboard instantly: the conversation 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 gives you the quarterly summary, ready for your accountant or the AEAT. If the tool you're evaluating doesn't log expenses with OCR or track your IVA, 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 for free and it activates without migrating data. Question 4: is the free plan real? FacturaHub's is unlimited — invoices, expenses, Modelo 303, Verifactu, watermark-free PDF — with 10 AI actions per month, no card, no expiry.
Honest summary: if your only requirement is that it runs on WhatsApp, look at FactuPro and similar — that category exists and it works for issuing a couple of invoices a month by chat. If what you want is to run the whole business by talking to an AI — invoices, photo expenses, reports, Modelo 303 — with a full dashboard behind it and the option to invoice from Claude while you work, that combination today is FacturaHub. Try it free and compare yourself: the first invoice takes 2 minutes.
A bot in a chat is a cut-down AI. FacturaHub bets on talking to Claude (MCP) or the dashboard AI: same gesture, more capability.
Receipt photo → expense with input IVA. Quarterly IVA summary ready for your accountant. Not everyone does this.
Built in and free. When mandatory in 2027, it activates without migration.
Two synced channels: the dashboard for control, Claude (MCP) to invoice conversationally without leaving your work.
If the requirement is strictly WhatsApp, FactuPro and similar cover simple issuing by chat. If the real requirement is invoicing by talking to an AI, FacturaHub does it with Claude (MCP) and the AI dashboard — with OCR expenses, reports and Verifactu built in.
We tried it and retired it. A bot inside a messaging chat is an AI limited by the platform. Talking to Claude connected via MCP — or to the dashboard AI — gives the same gesture ("invoice Acme 2,000") with a full AI behind it and your data always visible in the ERP.
It varies by provider — always ask before subscribing. FacturaHub has Verifactu built in today for free, 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 cross your output and input IVA and has no AI. 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.