In Haarlem, media companies and consumer brands build their apps with The Next App. Our team in Rotterdam works for clients in the Haarlem and North Holland region. No outsourcing, always the same developers.
From €10,000 · Lead time 2–6 months · No-obligation introductory call
Companies that trust us








10+ years of experience
Extensive experience with B2B platforms, media apps and customer-facing applications — sectors well represented in the Haarlem region.
Flutter specialist
As one of the first agencies in the Netherlands, we adopted Flutter early. One codebase for both iOS and Android.
Dedicated contact person
No large organisation with rotating teams. You always work with the same developers throughout your project.

Why us
In Haarlem and the broader North Holland region, you'll find media companies, creative agencies and retailers. We build apps that match those audiences: from consumer apps and booking platforms to internal business apps and B2B portals.
Our office is at Westblaak in Rotterdam. Most collaboration happens remotely via fixed contact moments and demo sessions. We travel to Haarlem for introductory meetings or working sessions, or you are welcome at our office.
Our approach
A consumer app or booking platform takes more than just good code.
We design the app based on your target users: consumers, customers, employees or business users.
With Flutter we build a single codebase for iOS and Android. That saves time and cost without compromising quality.
We connect the app to your existing software: CRM, booking systems, payment providers or your own APIs. Everything runs on Google Cloud by default.
After launch we remain available for updates, new features and performance improvements.


Get in touch
Most collaboration happens remotely: via sprint sessions, demo calls and Slack. When in-person contact is needed, we travel to Haarlem, or you are welcome at our office at Westblaak 33 in Rotterdam.
Prefer to call directly? 010 307 6100
Schedule a no-obligation call →Previous work
Veelgestelde vragen
Yes. We work for clients across the Netherlands. Haarlem and the North Holland region are well represented in our client base. Our office is in Rotterdam. Most collaboration happens remotely via fixed contact moments and demo sessions after every development sprint.
For an introductory meeting or working session we travel to Haarlem, or you are welcome at our office at Westblaak 33 in Rotterdam.
Location has no effect on the price. A simple app starts from €10,000. A platform with multiple user roles, a backend and integrations can quickly reach €30,000–€60,000 or more. We build with Flutter, which lets us develop iOS and Android from a single codebase.
After a no-obligation introductory call we provide a transparent quote per phase.
Yes. We built the Spotted by Locals app, a city guide used by travellers worldwide with recommendations from locals, and the Casterbee booking platform for holiday parks. Both apps serve a broad consumer audience.
We understand what it takes to build an app used by many different users: simplicity, reliability and a strong user experience are always central to how we work.
We build a wide range of apps: from consumer apps and booking platforms to B2B portals, internal business apps and media applications. As long as it is custom-built, we can build it.
View the full portfolio on our cases page. Every project started with a no-obligation conversation.
Yes. We work for both startups and larger organisations. In the Haarlem and North Holland region, these are often startups in the creative sector, media or consumer market. We actively help scope the MVP: what does the end user actually need, and what can wait? An MVP starts at €10,000 and can go live within 2 to 3 months.
Get in touch for a no-obligation call, even if your idea is not yet fully worked out.
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 →