From the first idea to the moment your app is live in the stores.
Companies that trust us



















We build custom apps for iOS and Android with Flutter and guide you from the first sketch to publication in the App Store and Google Play.
ERP, CRM, accounting and custom software that do not talk to each other cost you double entry and mistakes. We build the connection between them, so one change lands everywhere.
Does your process not fit a standard package, or do you pay licences for features you never use? We build software that sits around the way you work.
Here is what happens when you contact us.
In a first conversation you tell us about your idea and we explore the possibilities with you straight away.
We translate your idea into a technical plan: which technology fits, what the architecture looks like and what it costs.
We build a clickable prototype. You see the app before a single line of code is written.
We build in short rounds and keep you updated weekly, so you see the progress while we build.
Publication in the App Store and Google Play. After going live we remain available for maintenance and further development.

About us
The Next App builds custom apps and web applications for companies across the Netherlands. From our Rotterdam office, we work with clients from startup to enterprise, for iOS and Android.
Clients in Amsterdam or Eindhoven get the same personal contact and short lines of communication. We do not outsource, and you work with the same people throughout. Curious how the process works? Read more about having an app built.
Can't find your question? Feel free to get in touch.
The cost of an app depends on the complexity, the platform (iOS, Android or both) and the desired features. 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. A fully developed app with multiple user roles and integrations can easily reach €30,000 to €60,000 or more.
A Flutter app for iOS and Android is cheaper than two separate native apps because a single codebase serves both platforms. Annual maintenance (OS updates, dependency upgrades and security patches) typically costs €2,000 to €8,000. In a no-obligation introductory call we will give you a realistic estimate based on your specific requirements.
An average app project takes between three and six months, depending on scope. A simple app with a limited number of screens can go live in 2 to 3 months; a platform with multiple user roles, a backend and integrations takes 4 to 6 months.
We work in two-week rounds, so you always have a working version to review and can course-correct where needed. Publication in the App Store and Google Play adds one to two weeks for the Apple and Google review process.
Yes. We build native apps for iOS and Android, but also cross-platform apps with Flutter. With Flutter we build one codebase for both platforms, which saves time and money without lowering the quality.
We were among the first agencies in the Netherlands to work seriously with Flutter and have since published dozens of Flutter apps. For projects where platform-specific features or maximum performance are critical, we sometimes advise native development. In most cases Flutter is the most cost-efficient choice.
Most of our clients come to us with an idea and no technical background. We guide you from start to finish: from concept and MVP scope to wireframes, design and final publication in the App Store and Google Play.
You don't need to understand how the code works. What we need from you is knowledge of the problem the app has to solve.
An app is never truly finished. Apple and Google release new versions of their operating systems every year, new devices come with new requirements and users discover features they are missing. 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 to commission. There is no fixed contract and no obligation.
Let's grab a coffee. Tell us about your idea and we'll give you our honest take on what's possible.
Schedule a call →Usually a reply within seconds