We develop your app for iOS and Android, with Flutter as our foundation. From first idea to publication in the App Store and Google Play. One dedicated contact, transparent pricing and a working prototype after the first sprint.
First version with core features (MVP) from €10,000 · Lead time 2–6 months · No-obligation introduction
Companies that trust us
Custom app development
Mobile app development starts with the right partner. The Next App is an app development agency building custom iOS and Android apps for companies across the Netherlands, from our office in Rotterdam. Whether you need an iPhone app, an Android app or both: we guide the full process from idea to launch.
Below we explain our development process. Want to know what your idea would involve? Discuss your app and request a quote. You do not need a finished design to get started.
10+ years of experience
From startup MVP to enterprise app: 65+ clients, dozens of published apps in the App Store and Google Play.
Flutter specialist
We were one of the first agencies in the Netherlands to work with Flutter. One codebase, both platforms, native performance.
No outsourcing
All development happens in-house, in Rotterdam. You always know who is working on your project.
Our approach
We start with a thorough intake: what problem does the app solve, who are the users, what does the MVP need to contain? We translate your idea into a clear scope before writing a single line of code.
We design the user interface and build a clickable prototype. You experience the app before any code is written and can give feedback early, where changes are cheapest.
We build in two-week rounds with Flutter for iOS and Android. After each round you get a testable version. Once approved, we handle the App Store and Google Play submission for you.
Need a single platform? Read more about iOS app development or Android app development.
Budget
Once the technology is settled, we know enough to quote. A first version with core features only (MVP) starts from €10,000, a basic Flutter app from €15,000 and an app with a backend for data or user management from €20,000. How much comes on top depends on the number of screens, the backend, the platform and the design. You get a quote per phase, so you can decide after each phase whether to continue.
Indicative prices per project size, the items that run alongside the quote and a fully costed example are in our article on app development costs.
Want a quick estimate? Call us: 010 307 6100
Why The Next App
We were one of the first agencies in the Netherlands to work seriously with Flutter and have published dozens of Flutter apps since. Our team builds everything in-house, in Rotterdam. No outsourcing, no handoffs.
Flutter compiles to native ARM code and gives access to all device features through platform channels, so the difference from a fully native app is imperceptible in most cases.
Get started
Tell us who your app is for and which features you need first. In a no-obligation intake call we discuss platforms, integrations, timing and your available budget. We then define the scope and prepare a quote per phase. A finished design is not required; any sketches or requirements you already have will help.
Our office is at Westblaak 33 in Rotterdam. We work for clients from Amsterdam and The Hague to Eindhoven and Den Bosch. We are happy to come to you or connect online.
Request an app quote →Previous work
FAQ
A first version with core features only (MVP) starts from €10,000, a basic Flutter app from €15,000 and an app with a backend for data or user management from €20,000. After an intake call we produce a detailed quote per phase, so you know exactly where you stand and can decide after each phase whether to continue.
Indicative prices per project size, the factors that determine the amount and a fully costed example are in our article on app development costs.
Most app projects take between three and six months. A simple app can go live in 2–3 months; a platform with multiple user roles, a backend and integrations takes 4–6 months.
We work in two-week rounds so you always have a working version to test. Publication in the App Store and Google Play adds one to two weeks for the Apple and Google review process.
Flutter compiles to native ARM code and gives access to all device features. In most cases, the difference from a fully native app is imperceptible. The benefit: one codebase for both platforms, which is faster to build and cheaper to maintain.
For projects where platform-specific features or maximum performance are critical, we sometimes advise native development. We are honest about which approach fits your project best.
After launch we handle maintenance, updates and further development. Each quarter we issue an advisory report with recommended work: OS updates, dependency upgrades, bug fixes and security patches.
You decide which work to commission. No fixed contract, no obligation. Deferring maintenance builds up technical debt, so we advise keeping a small regular maintenance budget.
Yes. With Flutter we build for iOS and Android simultaneously from a single codebase. If you only need an iOS app or only an Android app, that is also possible. A single-platform app is cheaper because less testing is required.
During the intake we advise which approach best fits your target audience and budget.
Schedule a no-obligation introductory call via our contact page. Tell us who the app is for, which features you need and whether it should support iOS, Android or both. Integrations with existing systems, your timeline and budget also help us define the scope. Based on that, we prepare a detailed quote per phase so you know exactly what to expect.
You do not need a finished design to contact us. If you already have requirements or sketches, send them along so we can discuss what still needs to be worked out.
An app is installed via the App Store or Google Play and runs locally on the device. A web application opens in the browser without installation. The difference comes down to access to device features such as the camera, GPS and push notifications, and the ability to work offline.
For most business use cases we build a Flutter app, because it can use all device features and works offline. If a web application fits your needs better, see our custom web application page.
Yes, for simple use cases no-code tools like Bubble or Adalo are an option. They are cheaper to start with, but quickly hit limits: restricted customisation, dependency on a third-party platform and difficulties with complex integrations or high user volumes.
We build custom apps in Flutter. That costs more, but has no ceiling in terms of functionality, design or scalability. If a no-code solution would genuinely serve your needs, we will say so honestly during the introductory call.
A native app is built specifically for one platform: Swift for iOS, Kotlin for Android. A cross-platform app runs on both platforms from a single shared codebase. With Flutter, our default choice, the code compiles to native machine code, delivering comparable performance to a fully native app.
The advantage of cross-platform is that you only build once for two platforms. That saves on cost and timeline, and ensures iOS and Android always have the same functionality.
We guide the entire publication process: from app descriptions and screenshots to the final review by Apple and Google. We know the guidelines and what the reviewers look for, so the app gets approved first time.
We also advise on App Store Optimisation (ASO): the right title, description, screenshots and keywords to make your app discoverable for your target audience.
We do that regularly. We start with a technical review: how is the code structured, which frameworks are used and where are the bottlenecks? Based on that we give honest advice: continue developing, refactor or rebuild.
Bring as much as possible to the first meeting: repository access, technical documentation and a list of the biggest pain points in the current app. The more we know, the better our advice.
Let's grab a coffee. Tell us about your idea and we'll give you our honest take on what's possible.
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