How much does a web app cost – and what drives the price?

Having a web app developed: costs at a glance

A web app is an application that runs in the browser and processes data – for example a customer portal, an appointment manager, a quoting tool or an internal order overview. Unlike a classic website, the focus is not on content but on the logic behind it: users log in, create data, trigger processes and see individual results. It is exactly this logic that determines the effort.

The price is made up of several work steps: clarifying requirements, designing the interface and workflows, developing frontend and backend, building the database, testing, going live and training your users. On top come running costs for hosting, maintenance and further development. A reputable quote shows both – the one-off development and the ongoing operation – so you can estimate the total cost over several years.

Scope of features and user roles: what drives the effort

The biggest lever is the scope of features. A web app with a login, a data list and a form is quickly designed. Once roles and permissions are added – say management, case handlers and customers, each with their own view – the effort rises, because every function has to be planned and tested for every role. The same applies to approval workflows, status chains and automatic notifications.

Even seemingly small wishes carry weight: PDF export of quotes, file upload, a search with filters, reports with analytics or a dashboard with charts. Each of these functions needs a data model, an interface, validations and tests. It therefore helps to separate must-have from nice-to-have functions and to start with the must-haves. Everything else can be added in later stages.

• Roles and permissions: who may see and change what
• Workflows with status changes, approvals and reminders
• Reports, analytics and dashboard charts
• File upload, PDF generation and data export
• Search and filters across larger data sets

Integrations, payments and multi-tenancy: the often underesti­mated items

A web app rarely stands alone. It is supposed to read data from your inventory system, write contacts to the CRM or pass booking data to accounting. Every connection has to be planned, built, secured and tested – and it depends on the quality of the interface on the other side. If that is poorly documented, the effort rises noticeably. Decide early which systems should be connected.

Further cost drivers are online payments with subscription billing, sign-in through existing company accounts (single sign-on) and multi-tenancy, where several customers use the same application and their data must stay strictly separated. Such requirements are legitimate, but they do not belong in the first stage if you first want to find out whether the application works in daily use.

Web app, website or off-the-shelf software: what suits you?

Not every project needs custom development. If standard software already covers your process, it is usually the more economical choice. A custom web app pays off when your process is special, when several spreadsheets and tools are to be brought together, or when customers and partners are to get controlled access to your data. A typical case is replacing a grown spreadsheet landscape.

A website with a form is cheaper, but it cannot handle user accounts, workflows and analytics. For smartphone use, a web app that can be installed on the home screen like an app is often enough; a listing in the app stores is then not necessary. We clarify which variant suits your project in the initial consultation.

Running costs: hosting, maintenance and further development

After launch, there are costs for hosting and the database, depending on the number of users, the data volume and your availability requirements. Domain, certificate, backups and, where applicable, third-party services such as email delivery or payment processing come on top. When choosing the hosting location, keep data protection in mind, especially if personal data is processed.

Software is never entirely finished: libraries must be updated, security gaps closed and new requirements incorporated. Plan a maintenance agreement or a block of hours for this instead of leaving maintenance to chance. Anyone who factors this in from the start avoids expensive emergency work and keeps the application usable for years. This applies in particular to applications that process customer data.

How to arrive at a reliable quote

A quote is only as precise as the description it is based on. Note down who will use the app, which tasks it should handle and which systems are involved. Short use cases of the form “As a dispatcher I want to …, so that …” help. Sketches or screenshots of comparable programs speed up the alignment considerably.

For a clearly defined scope we preferably offer a fixed price. For larger projects we work in stages: first a working version with the most important functions is built, then it is extended based on real usage. For orientation: the Starter package from €2,500 suits compact applications with a clear core, the Professional package from €8,000 suits web apps with several roles and integrations. Complex platforms are quoted individually as Enterprise projects.