Lovable vs Lexiel: why maintain piecemeal calculators when your firm already has them integrated

The hype around AI-generated micro-apps

A curious trend has appeared in the legal world over the last few months: lawyers and legaltech founders building micro-applications with tools like Lovable, Bolt or v0 to solve specific firm problems. Personal injury calculators. Child support simulators. Divorce agreement templates. Each app adds subscription and maintenance cost, lives on a separate URL, and sits outside the real workflow.

The pitch is attractive: "describe what you need and you soon have a working app". And it is true: it works. At least at first. The problem appears when the firm realizes it has seven different URLs, seven invoices, seven interfaces, zero legal maintenance, and zero connection with the rest of the flow.

This article honestly compares that approach (several isolated calculators built with Lovable) with what we propose at Lexiel: an integrated platform where calculators are just one piece of the puzzle.

What Lovable does (and what it does not)

Lovable is a tool for fast web app generation via prompts. You describe what you want, the AI generates code, deploys it and gives you a URL. To validate a quick idea or build an internal form it is excellent. For a professional law firm it has structural limitations:

• It does not know Spanish law. It generates literally what you ask, without understanding whether your baremo is updated with the annual DGSFP resolution, whether Law 35/2015 applies or the previous one, nor which table corresponds to each injury type.
• It does not include case law. To calculate child support you need to know how your Provincial Court has ruled in similar cases. Lovable does not know that: it just does math.
• No official gazette alerts. The day the baremo changes, your app will still return last year's figures until you rewrite it.
• No data anonymization. If your client types a real name or ID, it ends up in a database you generated without really knowing where. For a law firm that is a GDPR problem.
• No case file integration. The calculation result is not automatically saved in the client's case, not attached to documents, not tracked.
• It does not draft documents. The calculator gives you a number. You still have to copy it, paste it in Word and draft around it.

None of this is a Lovable defect: it is that Lovable is not designed for this. It is a general-purpose tool and that is why it works for so many things.

What happens when you sum seven Lovable apps

Imagine a firm that decides to generate with Lovable the basic tools it needs:

1. Traffic accident calculator (Law 35/2015)
2. Child support calculator
3. Wrongful dismissal compensation calculator
4. Community property liquidation simulator
5. Default interest calculator
6. Divorce agreement template with viability traffic light
7. Engagement letter generator

Even if each looks cheap on its own, the firm ends up paying seven subscriptions and maintaining seven applications that:

• Live on seven different URLs (the lawyer has to remember which is which)
• Do not share any client data between them
• Are not connected to the case file
• None are backed by real case law
• If the law changes, all seven become outdated at the same time
• Legal maintenance falls on the lawyer

And even then, important things are missing: official gazette alerts, case law search, AI-assisted drafting, fiscal module, case management, legal academy. Each of these would be another additional Lovable app (or more likely, it would not get built at all).

What Lexiel proposes

Lexiel started from the opposite idea: a single platform where calculators are one more piece of the firm's flow. It includes today dozens of integrated tools, including:

• Traffic accident baremo (Law 35/2015, updated with annual DGSFP resolution)
• Child support calculator (CGPJ tables + supporting case law)
• Divorce agreement with post-divorce economic viability traffic light
• Wrongful dismissal compensation (unfair, objective, disciplinary)
• Community property liquidation
• Legal and default interest calculator
• Fiscal simulators (Forms 130, 303, 111, 115) with quarterly calculations
• Court costs calculator by jurisdiction and amount

Each of these tools is not isolated. When you calculate child support you can:

1. Save the result directly in the client's case file
2. Generate the corresponding document with AI without copying and pasting numbers
3. Consult recent case law from the relevant Provincial Court
4. Receive an alert if the official gazette publishes something affecting that calculation
5. Export a PDF report with the calculation, motivation and legal citations

What Lovable cannot give you: the AI assistant with legal RAG

The core of Lexiel is AgenteUno integrated as a firm assistant: a chatbot connected to the Spanish legal corpus (official gazette, case law, constitutional doctrine) that answers with verified citations and source traceability. Designed to reduce hallucinations: each citation is checked against its source.

With Lovable you can of course paste a call to the OpenAI API. But:

• You would not have the Spanish legal corpus indexed (130,000+ official sources)
• You would not have hybrid RAG (vector + FTS) tuned for Spanish law
• You would not have automatic anonymization of personal data before hitting the LLM
• You would not have token caching on the system prompt to cut cost
• You would not have an internal benchmark validating answer quality

All of that is months of specific engineering that a prompt to a general tool does not solve.

Lexiel Sites: the part Lovable does well, integrated

Let us be honest: Lovable shines at generating landings. That is where it was born and where the experience is smoothest. That is why Lexiel has built Lexiel Sites, a law firm website generator with:

• Vertical templates (family, labor, commercial, criminal)
• Embedded calculators (the client uses your baremo from your own site)
• Smart lead capture form with AI triage
• Consultation scheduler connected to your calendar
• AgenteUno chatbot with knowledge base specific to your firm
• Embedded Academy (legal education courses with your branding)
• A space for your own client testimonials (you add them, with their consent)
• Custom domain and branding (Team plan)

A firm can launch its professional website with all of the above without leaving Lexiel, and the site does not live in isolation: it is connected to the CRM, case flow and billing.

Direct comparison

Feature	Lovable (isolated apps)	Lexiel
Traffic baremo calculator	Yes, if you build it	Yes, integrated and updated
Child support	Yes, if you build it	Yes, with supporting case law
Divorce agreement + traffic light	Yes, if you build it	Yes, native
Fiscal (Forms 130/303)	Not viable to build yourself	Yes, integrated
Case management	No	Yes
AI document drafting	No	Yes (legal AI with RAG)
Case law search	No	Yes (CGPJ + CENDOJ)
Personalized gazette alerts	No	Yes
Firm website	Yes (strong)	Yes (Lexiel Sites)
Legal academy	No	Yes
GDPR anonymization	No	Yes (automatic)
Cross-module integration	No (isolated apps)	Yes (everything connected)
Monthly price	A subscription per tool in some setups (7 apps)	€52 (Basic) - €74 + VAT (Pro)

When Lovable does make sense

We do not want to be unfair. There are cases where Lovable is the best option:

• Validating a quick idea before investing in serious development
• One-off internal tools that do not touch clients (metric dashboards, team forms)
• Pitch prototypes where you need something visually polished in hours
• Non-technical developers who want to learn and experiment

If that is your need, Lovable is excellent and we use it ourselves for internal things. But for a firm that serves real clients, with sensitive data, procedural deadlines and GDPR requirements, the sum of isolated micro-apps is not a sustainable strategy.

The final math

Suppose a four-lawyer firm uses seven Lovable micro-apps: it pays seven subscriptions, and still lacks the heavy pieces (fiscal, case law, alerts, AI drafting, academy). That same firm with Lexiel Professional pays €74/month + VAT and gets everything integrated, with legal maintenance on our side, automatic updates and a single interface.

The difference is not just the price: it is that the time your firm would spend maintaining seven outdated apps is time your lawyers lose billing. And that does not show on the Lovable invoice.

How to get started with Lexiel

If you want to see the calculators before deciding, you can try them for free at lexiel.ai/tools: baremo, child support, dismissal, divorce agreement, fiscal, interest. No sign-up, no card.

If you want to try the AI assistant with case law and gazette alerts, you can use the free chat at lexiel.ai/chat-gratis (no sign-up needed) or check the Professional plan trial terms at lexiel.ai/precios.

And if you already know you want the full platform (calculators + AI assistant + cases + drafting + Lexiel Sites), the Professional plan costs €74/month (excl. VAT) on annual and covers everything described in this article.