How to develop a web application: a complete guide and costs in 2026

More and more companies are deciding to develop a web application — often also referred to as web software — to digitalize a process, offer an online service or replace spreadsheets and outdated business management tools. The web app has become the standard way to take software anywhere, with no installation and accessible from any device with a browser.

The questions we get asked most often are always the same: what exactly is a web application, how do you develop one, how long does it take and, above all, how much does a web app cost in 2026. In this guide we answer them all, with concrete price ranges and the criteria we actually use at Codebaker when we design a custom web application.

What a web application is

A web application is software that runs in the browser and lets the user perform real operations: entering and editing data, processing it, managing workflows, consulting reports. Unlike a brochure site, it does not just display content: it has application logic, a backend that processes requests and almost always a restricted area with authentication.

Understanding the difference between the three families of products helps to frame the project and the budget correctly:

Web software and web application: the same thing

In everyday language the terms web software and web application are used as synonyms: in both cases we are talking about software that runs in the browser, with no installation, accessible from any device. “Web software” tends to emphasize the application nature of the product — a real program, not a brochure site — while “web application” is the most common technical term.

For a company the substance does not change: building a custom web software means creating a tool you own, modeled on your own processes and integrated with the systems already in use. This is exactly the scope of this guide, from choosing the type all the way to the costs.

The types of web application

Not all web apps are alike, and the type directly affects timelines and costs. The main ones are:

• Single Page Application (SPA): the interface loads once and updates dynamically, offering a smooth experience similar to that of a desktop app.
• Server-side rendered web apps (SSR): the pages are generated by the server, with benefits for SEO and first-load times. It is the ideal scope for frameworks like Next.js.
• Progressive Web App (PWA): installable web apps, which also work offline and send push notifications, bringing the experience closer to that of a native app.
• SaaS platforms: multi-user web applications sold as a service, with management of subscriptions, roles and multiple tenants.

Web clip and PWA: installing the web app on the device

A recurring question is how to make a web app behave like a native app, complete with an icon on the home screen. This is where the web clip comes into play: a shortcut the user adds to the home screen of their device which, once tapped, opens the web application full screen, without the browser bar.

On iOS the web clip is the classic icon generated with Safari's “Add to Home Screen”; on Android and desktop the same result is achieved by installing a Progressive Web App (PWA). In both cases nothing is published on the stores: by correctly configuring the manifest and service worker, the web app becomes installable, works offline and can send push notifications. For many companies a web clip or a PWA is the fastest and most affordable way to bring software to their users' phones, without the costs and timelines of a dedicated app on the stores.

Web apps on Android: web app or native app?

A frequent question concerns Android: does an Android web app really work like an app downloaded from the Play Store? The answer is yes. A web application runs on Android directly from the browser (typically Chrome), with no installation at all; turning it into a Progressive Web App (PWA) means it can be added to the Home screen, open full screen with its own icon, work offline and send push notifications. It is the same mechanism as the web clip on iOS, applied to the Android ecosystem.

The choice between a web app on Android and a native Android app depends on the goals. A web app (PWA) costs less, updates without going through the store and is cross-platform: the same code serves Android, iOS and desktop. A native app — developed in Kotlin or with cross-platform frameworks like Flutter and React Native — instead offers full access to the hardware and system functions, and is distributed on the Play Store. For business management tools, portals and dashboards an Android web app is almost always sufficient; for graphics-intensive experiences or those with deep hardware integration it is worth considering native development.

Web apps on Chrome: running and installing the web app from the browser

Chrome is the most widely used browser in the world, and it is the natural reference when it comes to web apps. A web application runs on Chrome with no installation: you simply open an address to use it, with the same behavior on desktop and on smartphone. For developers, Chrome also offers DevTools, the tools for inspecting, profiling and fixing the web app throughout every phase of the project.

A Chrome web app does not, however, stay confined to a browser tab. When the web application is configured as a Progressive Web App (PWA), Chrome shows the install icon in the address bar: with one click the web app installs as a standalone application, both on desktop (Windows, macOS, Linux and ChromeOS) and on Android, with its own icon, dedicated window and offline operation. It is the same mechanism as the web clip on iOS, here handled directly by Chrome. For many companies, installing the web app from Chrome is the most immediate way to distribute internal or customer-facing software, without going through the app stores.

The phases of developing a web application

Developing a web app does not mean “writing code”: it is a structured journey in which the analysis phase weighs as much as development. This is the flow we follow in our projects.

We have formalized this journey in our working method, designed to give the client visibility and control at every phase of the project.

The technologies for developing a web app

The technology choice is not a detail: it determines performance, scalability, maintenance costs and how easy it will be to find developers in the future. The stack we adopt most often is:

• Frontend: React for the interfaces and Next.js when SEO, server-side rendering and high performance are needed.
• Backend: Node.js or cloud-native Java with Quarkus, depending on the load and integration requirements.
• API and integrations: custom web APIs to connect the web app to ERP, CRM, business management systems and third-party services.
• Infrastructure: cloud architectures with Kubernetes and Docker for scalability and reliability in production.
• Security and access: IAM solutions for authentication, roles and identity management.

Web application in .NET, Node.js, Java or Python: which one to choose

The backend is the engine of every web application and the choice of language affects performance, development costs and ease of maintenance over time. Among the technologies most used to develop a web app there is no absolute winner: each has its own ideal terrain. Here is how we compare them.

At Codebaker we work mainly with the JavaScript/TypeScript and cloud-native Java stack, but the criterion always stays the same: the technology is chosen starting from the client's context, the skills already present in the company and the systems to integrate — not for fashion. A web application in .NET makes perfect sense in a Microsoft environment, just as Node.js or Java do in other scenarios.

How much it costs to develop a web application in 2026

This is the central question. There is no single price, because a web app can be an internal management tool for five people or a SaaS platform with thousands of users. To get your bearings, these are the realistic cost ranges in 2026 on the Italian market.

These figures are deliberately indicative: they serve to grasp the order of magnitude, not to replace a quote. The correct way to estimate a project is to start from the real features and processes.

The factors that determine the cost of a web app

For the same “idea,” the final price can vary a lot. The elements that have the biggest impact are:

• Number and complexity of the features: every module adds analysis, development and testing.
• UX/UI customization: a custom design costs more than a template, but it affects adoption and conversions.
• Integrations with external systems: ERP, CRM, payment gateways, business management tools and third-party APIs.
• Expected load and scalability: a platform for thousands of users requires a more solid architecture.
• Security and compliance: handling personal data, roles, audits and regulatory requirements.
• Maintenance and evolution: a web app is a living product; the post-release stage must be budgeted for too.

Custom web app or ready-made SaaS?

It is the crossroads every company faces. A ready-to-use SaaS software costs less upfront and activates quickly, but it forces you to adapt your processes to the tool and to pay a fee forever, without ever owning it.

A custom web application requires a larger initial investment, but it becomes a company-owned asset: it is modeled on real processes, integrates with existing systems, grows with the company and does not tie you to third-party licenses. For many organizations, over the medium term, it is also the most economically sensible choice.

Development timelines of a web application

Timelines also depend on complexity, but as a reference:

• MVP: 6-12 weeks for a first working version with which to validate the product.
• Medium-complexity web app: 3-6 months, proceeding through incremental releases.
• Enterprise platform: over 6 months, with a multi-phase evolution roadmap.

Working through frequent releases lets you put something concrete in users' hands within a few weeks, gather real feedback and reduce the risk of investing in features no one will use.

In-house development, software house or freelancer?

For a corporate project meant to last and grow, a software house like Codebaker offers the best balance between skills, timelines and reliability over the long term.

Frequently asked questions about developing a web application