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Web app development · Platforms and SaaS
Web apps & custom software
When a website is not enough, we build web apps: management software, portals with members' areas, dashboards, subscription platforms and marketplaces. We design the database, the APIs and the interface, integrate recurring payments and third-party services and maintain the product for years. Projects from €9,000 to over €30,000 excluding VAT, in 1–3 months.
Software for companies and startups in Italy and abroad, built remotely on shared specifications and prototypes.
Why KVA
Software shaped by use
A web app is software that lives in the browser: it runs on a computer, tablet or phone with nothing to install, and everyone works on the same up-to-date data. Web app development happens on paper first, with a written functional specification: who uses it, what it must do, with which data and which external systems. From there come the data structure, the integrations and an interface you learn without a manual.
We build software for ourselves too: Prop Trading Stat, a dashboard and app for prop-firm traders, and Forex Sentiment, a sentiment platform with mobile apps and a panel for trading software. Get Simple Chat, an AI chatbot for websites, and Dibo, a logbook for residential care settings, are also ours. For clients we have built ISINConnect, a bilingual platform with subscription plans and a members' area, and ZenFX Official, with video courses, tools and a live leaderboard. For Trading Azionario we automated subscriptions and the members' area, with an API for a third-party marketplace; for a trading robot, we built a website with a members' area and a licence API.
We prefer to start with a lean first version, put it in users' hands and grow it based on real usage, with frequent releases. Everything is documented, tested and monitored; hosting is on our own European server or, with no yearly fee, on your own infrastructure. The data stays yours.
What we can include
What we build
From analysis to maintenance, every web app quote covers these items. The cost grows with features, integrations and the number of users.
- 01Process analysis and written functional specification
- 02Database and API architecture
- 03Clickable prototype and interface design
- 04Authentication, user roles and members' areas
- 05Recurring payments, subscriptions and invoicing
- 06Integrations with ERP, CRM and third-party services
- 07Testing, deployment, monitoring and backups
- 08Documentation, training and ongoing development
Method
How we work
- 01
Analysis
A first conversation about processes, users, data and the systems to integrate; then we put it all in a written functional specification, with the quote.
- 02
Design
Clickable prototype: flows and screens approved before any code is written.
- 03
Build
Releases every few weeks on a staging environment, with real data: you see the software grow and we adjust it together.
- 04
Launch and grow
Go-live, monitoring, backups and support; then new features, each one quoted before release.
Indicative prices
What a web app costs
Indicative prices, excluding VAT. A web app is quoted on the functional specification: features, integrations, users and service level. The quote follows within a few days of the analysis, with no obligation.
- Web app, management software or platform€9,000 – 30,000+Analysis, database, APIs, interface, members' area, testing and deployment; 1–3 months. Over €30,000 for larger projects
- iOS and Android mobile app€12,000 – 35,000+If an installed app is also needed, from a single codebase; 2–4 months
- Hosting, maintenance and updatesFixed yearly feeSet in the quote. Our own European server with SSL, backups, updates and monitoring; domain included and always registered in your name
- Ongoing developmentQuoted per releaseNew features and changes quoted before each release
Indicative prices, excluding VAT; minimum project €1,600. Web apps are quoted on the functional specification; hosting, maintenance and updates are a fixed yearly fee set in the quote.
Selected work
Platforms we built
FAQ
Common questions
The questions companies and startups ask us most often before building a web app: costs, timing, code ownership, security and maintenance.
How much does it cost to develop a web app?
The projects we take on usually range from €9,000 to €30,000 excluding VAT, over 1–3 months; larger platforms or those with many integrations can exceed this range. The quote is based on a written functional specification, so you know exactly what it includes. For comparison: a corporate website starts at €4,500, an online store at €5,000.
What determines the cost of a web app?
The biggest cost factors are the number of features and user roles and the integrations with ERP, CRM and third-party services. Payments and subscriptions, data volumes and reporting, languages and the level of service after launch also count. To contain costs, it pays to start with the essentials and add features when real usage requires them.
How long does it take to develop a web app?
Usually 1–3 months from approval of the functional specification, with intermediate releases every few weeks on a staging environment. A lean first version can be live sooner, if the scope allows; timing also depends on the availability of data, access to the systems to integrate and feedback.
Is a web app or a mobile app better?
In most cases it makes sense to start with a web app: it works on every device with no installation, updates instantly and costs less. An iOS and Android app makes sense when you need push notifications, offline use or a presence on the app stores. The two are not mutually exclusive: Prop Trading Stat started as a web app and today also has mobile apps, connected to the same data.
Does the data stay mine?
Yes: the data sits in a database you have full access to. The platform can run on our European server, with the yearly fee, or on your own infrastructure, where the fee does not apply and maintenance is agreed separately.
How do you handle data security?
Secure authentication, roles and permissions for every user, encrypted connections, daily backups and regular updates; European hosting and restricted server access. Legal texts, such as the privacy notice, come from your legal adviser and we integrate them into the platform. With Dibo, our software for residential care settings, data is encrypted field by field on the facility's own computer.
Who maintains the web app after launch?
We do, if you wish: monitoring, backups, security updates and support are covered by a fixed yearly fee set in the quote. New features and changes are quoted before each release, so the software grows with your business with no surprises.
We also work in
Milan · Turin · Genoa · Alessandria · Acqui Terme · Lugano · Monte Carlo
Services
Business websites · E-commerce · Mobile apps · Desktop software · Redesign · SEO · Hosting & maintenance
Sectors
Trading & finance · Art galleries · Professional firms · Education · Real estate agencies · Restaurants · Hotels & B&Bs
Let's start
From process to software
Describe the process you want to digitise, who will use it and which systems it must talk to: we usually reply within one working day with our first questions and a ballpark estimate.