Start with what Aranzadi Fusión does better, because it is hard to overstate: the Aranzadi database is the reference for legal research in Spain. Case law, consolidated legislation, doctrine and precedents, with Thomson Reuters' editorial apparatus behind it and decades of accumulated material. Fusión puts that inside the practice-management software, so legal research and the matter live under one roof, and its AI works over that corpus. Mandato has none of this, and is not going to imply that it does.
That said, it is worth separating two purchases that usually arrive together. One is access to the database. The other is software that runs matters, deadlines, clients and invoices. Aranzadi Fusión sells them as one. Mandato sells only the second, which is why this comparison is not about who wins, but about what you are buying and at what price. Where we have no verified public information, the cell says so.
| Capability | Mandato | Aranzadi Fusión |
|---|---|---|
| Legal database (case law, legislation, doctrine) | —AI research; CENDOJ connection in development | ✓ |
| AI over a proprietary legal corpus | — | ✓ |
| Filing written submissions via LexNET | ✓ | ✓ |
| LexNET notifications received into the matter | ✓ | ✓ |
| Matter, deadline and client management | ✓ | ✓ |
| Price published on the website | ✓ | —quote on request |
| Buy the software without the database | ✓ | ◐no verified public information |
| Invoicing from the matter | ✓chained records and QR as standard | ◐no verified public information |
| Bilingual ES/EN across UI, portal and templates | ✓ | ◐no verified public information |
| Client portal | ✓ | ◐no verified public information |
| WhatsApp Business tied to the matter | ✓ | — |
| Unified inbox for email and WhatsApp per matter | ✓ | ◐no verified public information |
| Filing tax forms | —exports to Holded | ◐no verified public information |
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Two products, one invoice
A firm that signs up to Aranzadi Fusión buys, in a single act, a documentary subscription and practice-management software. For a litigation practice that consults case law daily, that fusion is precisely the value: the matter and the research are one click apart, with no second vendor and no second login.
For a different kind of firm, the same fusion is an invoice that includes something they already have or never open. A property or immigration practice consults the database far less often than it consults the Catastro, the Land Registry or the status of an application. It is paying for an editorial estate a century in the making, and using it three times a month.
The honest question is not which is better. It is: of what you pay, how much is database and how much is software? If the database is what holds you, then Fusión is doing its job and Mandato has little to offer you.
What Mandato puts on its side of the scale
Mandato connects to the Spanish administration on the side a firm touches every day: LexNET notifications inside the matter, tax-ID and VIES validation against the AEAT, Catastro lookups, AI parsing of notas simples and certificates, and alerts from the BOE and BORME. Invoicing is born in the matter with chained records and a QR as standard, and exports to Holded if the books live there.
And there is a difference of origin. Mandato was built inside Frank & Partners, a Costa del Sol firm serving clients of more than twenty nationalities, because nothing on the market spoke legal Spanish, English and VeriFactu at once. That shows in the bilingual portal and in templates written in both languages rather than machine-translated.
What it doesn't show is a case-law database, because there isn't one.
The client conversation
Aranzadi Fusión is strong where legal research lives; it is quieter where the conversation with the client lives. It doesn't integrate WhatsApp Business, and we have no public evidence of an inbox that gathers email, WhatsApp and calls per matter.
For a litigation practice that communicates mostly through LexNET and email, that may not matter. For a property or immigration firm, whose international clients write on WhatsApp at all hours, it does: in Mandato that message lands on the matter from a firm-owned number via 360dialog, instead of staying on a lawyer's phone.
Where we have no verified public information on Fusión's communications, we say so rather than imply a gap. What we do assert is our own side: a single inbox, two-way WhatsApp and templates in both languages, by design.
Price and commitment
Mandato publishes its per-user price, offers a free 14-day trial with no card and asks for no lock-in. Aranzadi Fusión works from a bespoke quote, on the contracting structure typical of an editorial subscription.
Neither model is dishonest. One makes you talk to a salesperson before you learn the price; the other makes you judge for yourself whether you need the database. Pick the problem you'd rather have.
Legal research is the centre of your work, you want case law and the matter on the same screen, and Aranzadi's corpus is a tool you would use every day.
Your database question is already settled — or you barely use one — you want to pay only for the software, you want invoicing welded to the matter, and you serve international clients who expect to read their matter in English.
We import your matters — no pain, no Excel in between.
Clients, matters and documents migrate as part of onboarding, at no extra cost.