Waterpolo Hub
Match management, shotmap, analytics, scoring, possession mapping, player report cards, and local video analysis.
Open app →
Paul Zuiderduin
Sports, education, and practical app building
I build sports and practical apps that I actually want to use.
I studied Human Movement and Health Sciences at the Vrije Universiteit Amsterdam and completed my bachelor degree there. Right now, I am doing the ALO at the Hogeschool van Arnhem en Nijmegen to become a physical education teacher.
Outside study and coaching, I enjoy geocaching and spending time with my two dogs: a Swiss White Shepherd and a Golden Retriever. I always have new app ideas in my head, and this website is where those ideas turn into usable tools.
Support This Work
If these apps are useful to you, you can support further development through Ko-fi.
Builder, coach, and PE teacher in training.
What I build
Tools for coaches and teams that make tracking, analysis, and decisions faster and clearer.
Shot tracking
Scoring logs
Player reports
Video snippets
Contact
If you have feedback, ideas, or want to collaborate, send me a message.
Apps on this website
These are practical tools I actively develop and use, grouped by sports and other use cases.
Sports apps
Tools for coaching, analysis, and finding where to watch sports.
Field Hockey Hub
Team setup, event tracking, match overviews, and analytics with the same workflow as Waterpolo Hub.
Open app →Sportkijken
Dutch sports watch guide: choose football, Formula 1, and tennis to see where to watch and whether each stream is free or paid.
Open app →Other apps
Practical tools for everyday decisions and media tasks.
Zorgvergelijker
Compare your expected yearly healthcare costs across Dutch insurance policies based on the care you think you will actually use.
Open app →MOV2MP4
Convert .MOV files to .mp4 directly in your browser with drag-and-drop and per-file downloads.
Open app →What is next
New sports tools, practical utilities, and experiments that turn everyday ideas into usable software.