Custom software development for SMEs, integrated with your ERP and CRM

IA4PYMES designs and builds web applications, internal tools and management systems for SMEs in Spain. Our in-house team writes the code, connects it to Holded, Sage, Odoo or your CRM and hands over the source code, which your company owns.

The custom software we build

We build software for the work your current tools and spreadsheets don't cover. We work on three fronts.

Web apps and internal tools

Applications your team uses every day, designed around how it works today. Where it adds value, they use AI to read documents or search your manuals.

Built for your process

ERP and CRM integration

We connect the software to Holded, Sage, A3, Odoo, SAP, Salesforce or HubSpot through APIs and webhooks, so nobody copies data by hand from one program to another.

Holded, Sage, Odoo and more

Your own code, no lock-in

We hand over the source code and configuration, ready to run. Your company owns it and can keep extending it with us or with another team.

Your own code, no lock-in

Custom software by industry

Typical applications in the industries we specialize in.

Medical and dental clinics

An internal tool to manage the schedule, patient records and patient communications, connected to the software the clinic already uses.

Law firms

An internal portal to track each client's cases, deadlines and documents, linked to the firm's CRM.

Accounting and advisory firms

Dashboards that pull each client's accounting data from Holded, Sage or A3, so nobody consolidates it by hand in spreadsheets.

Logistics and distribution

Apps to record orders, delivery notes and deliveries that write every entry straight into the ERP.

Industrial B2B trade

A quote configurator that starts from your catalog and applies the prices from your ERP price list.

Retail

Stock, order and price sync between your online store, your point of sale and your ERP.

If what you need is for an existing process to run on its own, such as reading invoices or sorting emails, we have a dedicated service. See AI process automation

3-Step Methodology: Audit, Integration & Deployment

A transparent engineering process designed to maximize return on investment and protect your data privacy.

Technical Audit & Inefficiency Diagnosis

We deeply analyze your company's operational workflows to pinpoint bottlenecks and quantify wasted hours on manual tasks that AI can automate.

Quantified Time Savings

Agent Architecture & ERP/CRM Integration

We design and build private AI agents connecting directly to your management systems (ERP, CRM, databases), ensuring positive ROI in record time.

Integration with your systems

Private Deployment & Continuous Scaling

We deploy the solution under the strictest data privacy standards, monitoring performance in real time and regularly optimizing the models.

Total Privacy & Control

Custom software pricing and timelines

Price depends on the features and on the systems to integrate. We start with a consultation that sets the scope and the expected return before we quote the build.

299 €
Diagnosis consultation + VAT, 100% deducted if we build your project
2-3 wk
Initial diagnosis of your processes
1-4 mo
Development and deployment

15-Minute Viability Guarantee

If in the first 15 minutes of the video call we see that your business cannot benefit from AI, we cancel the session and refund 100% of the cost.

Project investment ranges

When you request a quote, you pick one of these ranges:

  • 2,000 € - 10,000 €
  • 10,000 € - 30,000 €
  • 30,000 € - 50,000 €
  • More than 50,000 €

Frequently asked questions about custom software

What SMEs usually ask us before commissioning a build.

It means building an application around your company's processes instead of bending them to fit a generic program. At IA4PYMES it covers design, development, integration with your systems and handover of the code.

Yes. We hand over the source code and configuration ready to run, with no vendor lock-in. You can keep developing it with us or with another team.

Yes. We connect through APIs and webhooks to Holded, Sage, Odoo, SAP, Salesforce, HubSpot, Gmail, Outlook and WhatsApp Business, among others.

No. The new software plugs into your existing systems and adapts to how you work today, without operational disruption or migrations.

We start with a 299 € + VAT diagnosis consultation, which we deduct in full if we build the project. The budget depends on scope; when you request a quote you choose between 2,000-10,000 €, 10,000-30,000 €, 30,000-50,000 € or more than 50,000 €.

The initial diagnosis takes about 2 to 3 weeks. After that, development and deployment take between 1 and 4 months.

Once it is in production we give you direct technical support, monitor the system and fine-tune it during the stabilization phase.

Have any other questions?

Book a Consultation

Book your consultation and scope your custom software

In a 60-minute session we assess the technical feasibility of the project and hand you a development plan with phases and costs. You decide whether to build it yourself or have us build it.