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Web application development

Custom web applications accessible from the browser, with a design adapted to mobile and desktop.

More than 100 projects. Developing software since 2012

Our unique system combined with AI delivers faster results.

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Enric Martínez

Enric Martínez

Full stack development
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¿Por qué obligar a descargar una app si puedes tenerlo todo en el navegador? Desarrollamos SaaS y PWAs que son accesibles desde cualquier dispositivo, funcionan offline y eliminan la barrera de entrada de las tiendas de aplicaciones.

Your App Always Available, Without Barriers

Do you need an app accessible from any device without going through the app stores?

Web application development makes it possible to offer tools from the browser, with no installation required. In web application design, we start from the project's user journeys and data, whether it's a SaaS platform, an internal tool or a PWA.

A PWA can incorporate offline use or notifications, depending on the browser and device. We assess whether an SPA or server-rendered pages are suitable, with accessibility, responsiveness and a cloud infrastructure suitable for the intended use.

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Glashh

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From Idea to Browser

Our web app development process minimizes risk and accelerates launch time. No waiting for app store approvals, continuous deployments, and immediate feedback.

  • Discovery and Definition

    Before writing any code, we analyze what data the application needs and which systems it has to talk to, and with that we define the best architecture: PWA, SPA (Single Page Application) or cloud-native application? We evaluate accessibility requirements and define the MVP.

  • UX/UI Design

    Wireframes and responsive visual design that guarantee an optimal experience on mobile, tablet, and desktop. Interfaces with immediate responsiveness.

  • Iterative Development

    Cycles with defined deliverables and deployed versions that you can test in your browser. No compilations, no waiting: just open the link and test your web application.

  • Testing and Performance

    Testing across multiple browsers and devices. Automated testing, accessibility audits, and page load speed optimization. Before it reaches your users, each version is reviewed in a test environment.

  • Continuous Deployment

    We release updates when they're ready, not when a store allows it. Cloud-native infrastructure with deployments designed not to interrupt the people using the application.

  • Maintenance and Evolution

    Web applications evolve with your business. We offer ongoing maintenance, security patches, and development of new features.

Why Mecexis for your Web App Development

Experience in web applications used by thousands of people every day

We have built SaaS platforms that handle millions of euros in transactions, internal web apps that have removed spreadsheets from entire departments, and PWAs that work offline.

We master the full stack: reactive frontends, Django backends and cloud-native infrastructure. When something goes wrong, we diagnose it and fix it. A single point of contact, full accountability.

Web app development with us means web applications that update instantly, with no outdated versions in circulation and no reliance on third parties to publish.

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Related projects

Discover how we have helped our clients achieve their goals with innovative digital solutions.

We create custom digital products to drive our clients growth.

Frequently Asked Questions

Clear answers to the most common questions about web app development.

Everything You Need to Know Before You Start

Web applications run directly in your browser, without installation. They don't need to go through the App Store or Google Play. They update instantly and are accessible from any device with a browser: mobile phone, tablet, or computer.

A PWA (Progressive Web App) is a web application that offers a native app experience: it works offline, can send notifications, and can be "installed" on the home screen. Thanks to Service Workers it stores data locally and syncs when the connection returns, which is useful for field teams or places with unreliable connectivity. It combines the best of web and mobile without the duplicate development costs.

It depends on the scope. A functional MVP-type web application typically costs between €10,000 and €45,000. More complex SaaS platforms with multiple roles and advanced features can exceed €80,000. We'll give you a detailed quote for the scope we agree on after understanding your needs.

A typical web app MVP is in production within 2-4 months. More complex web applications may require 5-8 months. We work in two-week sprints with consistent releases.

Yes. We integrate your web application with ERPs, CRMs, payment gateways, and third-party services using APIs. If your system doesn't have an API, we'll develop a connection layer.

Yes. The web application and the system that supports it, with its data, permissions and integrations, are built by the same team. Every change is designed with both parts in mind, so when something doesn't work you know exactly who to talk to.

Our stack guarantees robust web applications: Django (Python) on the backend for its security and scalability, combined with Vue.js, HTMX, or Alpine.js on the frontend for maximum responsiveness. Cloud-native architecture for flexible deployments.

Accessibility is a fundamental part of our process. We develop following WCAG standards, so that as many people as possible can use your web applications. This also improves SEO and overall usability.