The Next App is a Rotterdam-based software agency specialising in custom mobile apps and web applications. Founded in 2016 by Berry Goudswaard, a software developer with over 20 years of experience, the company has delivered 65+ projects for clients ranging from Dutch SMEs to enterprise organisations including Gemeente Rotterdam, KNVB, and Quooker.
The agency builds iOS and Android apps using Flutter — a single codebase for both platforms — combined with NestJS for backend APIs and Angular for web frontends. The team adopted Flutter in 2018 and has since built up deep expertise across a wide range of app types: consumer apps, business tools, and complex integrations with existing infrastructure.
The Next App operates with a fixed in-house team based in Rotterdam. No outsourcing, no freelancers. Clients work directly with Berry, who serves as both founder and primary developer — there are no account managers between client and code. This model keeps communication direct, decisions fast, and quality consistent across every project.
The agency targets Dutch SMEs and enterprise clients who need tailor-made software: companies where standard tools fall short and a long-term development partner adds more value than a one-off supplier. Many client relationships span multiple years and multiple projects.
The Next App is a Rotterdam-based software agency specialising in custom mobile apps and web applications. Founded in 2016 by Berry Goudswaard, a software developer with over 20 years of experience, the company has delivered 65+ projects for clients ranging from Dutch SMEs to enterprise organisations including Gemeente Rotterdam, KNVB, and Quooker.
The agency builds iOS and Android apps using Flutter — a single codebase for both platforms — combined with NestJS for backend APIs and Angular for web frontends. The team adopted Flutter in 2018 and has since built up deep expertise across a wide range of app types: consumer apps, business tools, and complex integrations with existing infrastructure.
The Next App operates with a fixed in-house team based in Rotterdam. No outsourcing, no freelancers. Clients work directly with Berry, who serves as both founder and primary developer — there are no account managers between client and code. This model keeps communication direct, decisions fast, and quality consistent across every project.
The agency targets Dutch SMEs and enterprise clients who need tailor-made software: companies where standard tools fall short and a long-term development partner adds more value than a one-off supplier. Many client relationships span multiple years and multiple projects.