Billin or FacturaHub? Billin is a simple, affordable web invoicer (from €8.50/month, now part of TeamSystem), very handy for issuing invoices and recurring billing from the browser. FacturaHub does the same but you operate it by talking — on WhatsApp, from Claude or in the dashboard — with AI that creates the invoice from a message, a free forever plan and automatic Modelo 303. If you just want a cheap web form, Billin works; if you want to invoice without forms and from wherever you are, FacturaHub wins.
Billin stands out for what it does well: it's one of the easiest, most accessible tools on the market for freelancers and micro-businesses, with clean templates, recurring billing and Verifactu compliance. It's a good entry point for those starting out. Its limit is exactly that: it's a form-based web invoicer — you open the app, fill fields and save. No conversational AI, no WhatsApp, no Claude.
FacturaHub starts from the same result (a legal invoice with IVA and IRPF and its PDF) but changes the how: "invoice 500 to Acme for design" via WhatsApp and the invoice creates itself in 3 seconds. Snap a receipt photo and the expense is logged with its input IVA. And everything shows up synced in the dashboard and in Claude. One system with three doors, not a single web screen.
On price, FacturaHub wins: a free forever plan with unlimited invoices, OCR expenses, IVA, IRPF and Modelo 303 (only AI is metered, with 25 free actions per month). And for those who code, FacturaHub adds a REST API, npm CLI and an MCP server for Claude/ChatGPT — territory Billin doesn't touch. Both are ready for Verifactu (mandatory July 2027 for freelancers).
Summary: choose Billin if you want the simplest, cheapest way to issue invoices from the browser. Choose FacturaHub if you want that same result but operated by AI, without forms, with photo expenses and from wherever you are.
FacturaHub understands "invoice 500 to Acme" and creates the invoice. Billin requires a form.
FacturaHub has native WhatsApp integration. Billin doesn't.
Full REST API + CLI + MCP server. Billin has a basic API.
Generous free plan. Paid plans starting lower than Billin.
FacturaHub. You create invoices with a text message or WhatsApp. No forms.
No. Billin works only from the web. FacturaHub works from web, WhatsApp, API and Claude.
Yes. Export your data and start on FacturaHub in minutes.