Custom Software Development

Custom software is built around how your team actually works. Your business processes drive the design, not the other way around like Salesforce, SAP or generic SaaS.

• No more workarounds: every screen and workflow fits your real process, not standard limits.
• What companies are buying: custom web applications, mobile apps and integrated backend systems.
• The payoff: automated processes, fewer errors, more productive teams.
• Any size: from a control panel or client portal to a full ERP or multi-tenant SaaS.

In Spain this market has grown 18% a year since 2022, as SMEs digitalise faster and ditch Excel, Access or underused ERPs for tools that actually fit.

Getting the scope right matters most: what problem it solves, who uses it, what it integrates with, and how it grows over the next 3-5 years.

You don't always need custom software. But a few clear signs tell you that off-the-shelf tools have hit their limit and it's time to build your own.

• Spreadsheets run critical work and people lose track of versions when several edit at once.
• Your CRM or ERP falls short, so your team patches the gaps with manual workarounds.
• Systems don't talk to each other, or rivals simply work faster with their own digital tools.
• Want to dig deeper? Read custom vs commercial software and how to migrate from Excel to a professional solution.

Data volume is the giveaway. Once you manage thousands of daily records in shared spreadsheets, you've outgrown generic tools. A well-designed relational database stops data loss, keeps information consistent and gives you reports Excel can't.

Pricing tracks scope, plain and simple. A one-off fix starts from €300, while a full enterprise platform starts from €5,000, with no published ceiling.

• What moves the budget: number of screens and user roles, integrations (ERP, CRM, payments), GDPR or PCI-DSS rules, and UI polish.
• Fixed price by phase: start with a tight scope, then expand based on real results.
• Want the full breakdown? See our guide to software development costs in 2026 with ranges by project type.

A phased build keeps risk low. Phase 1 is an MVP with core features (from €1,500), Phase 2 adds integrations and automation (from €1,500), and Phase 3 covers optimisation, analytics and advanced features (from €5,000).

You validate the product with real users from day one and decide where to invest based on data, not guesses.

We build your custom software in 5 clear phases, and the code is yours from day one, documented and versioned in Git.

• Discovery (1 week): we map your processes, requirements, integrations and a technical roadmap.
• Design (1 week): architecture, data model, user flows and wireframes.
• Development (2-6 weeks): 2-week sprints, each ending in a demo to validate progress.
• Testing and QA (1-2 weeks): unit, integration, E2E and security tests.
• Deployment and support: we go live, train your team and keep helping.

We work in Scrum with React and TypeScript on the frontend, Node.js and Golang on the backend, PostgreSQL and MongoDB for data, and AWS or Google Cloud for infrastructure.

You see everything as it happens: the repo, the task board and staging environments. At the end you get full documentation, training and 30 days of post-delivery support in which we fix any bug at no extra cost.

Web apps, mobile apps, integrations, legacy migrations and SaaS platforms are our daily bread. Most projects mix a few of these.

• Web apps: corporate portals, internal panels, dashboards and project management. See custom web development vs CMS like WordPress.
• Mobile apps: native iOS (Swift) and Android (Kotlin), or cross-platform with Flutter and React Native.
• Integrations and APIs: we link your ERP, CRM, billing and logistics via REST, GraphQL and webhooks. See our ERP and CRM integration guide.
• Legacy modernisation: we move old Visual Basic, Access or Delphi apps to modern tech, keeping your data. See legacy application modernisation strategies.

SaaS platforms: selling a digital tool to other companies? We build multi-tenant SaaS with subscription management, automated billing, per-client admin panels and horizontal scaling.

Launch day is the start, not the finish. Live software needs ongoing care to stay secure and fast as your business grows.

• Maintenance: proactive monitoring, monthly development hours and a custom SLA if you need one.
• Ongoing upkeep: security patches, bug fixes, performance tuning and new browser/OS support.
• Read why preventive maintenance pays off across the software lifecycle.

Skipping maintenance always costs more. An unupdated system piles up security holes, frustrating bugs and slow performance. Prevention runs 15-20% of the initial project cost per year, far less than fixing a critical failure.

GDPR compliance and security aren't extras we bolt on at the end. We design them into every app from the first commit.

• Security by design: OAuth 2.0, JWT and SSO authentication, plus encryption in transit and at rest.
• Threat protection: OWASP Top 10 coverage, code audits and automated security testing.
• Safe deploys: CI/CD pipelines scan code and dependencies, with instant rollback. Read our guide on DevOps for Spanish companies.

We're a Spanish custom-software team of engineers and consultants, not a code factory. We build software that serves your business goals.

• Total transparency: fixed budgets, demos every 2 weeks, your repo from day 1.
• Your code, yours: documented, with no proprietary lock-in.
• Senior team: the founder has 8 years of experience, with maintenance and a custom SLA available if you need one.
• Based in Madrid: office at Paseo de la Castellana 194, working remotely across Spain.
• Need technology consulting, to build your web application or create your mobile app?

Talk to our team for a free discovery session and we'll map out the right approach for you.