Hi Diederik, to test your app with a development pc you need to create a custom phonegap build using the instructions here: https://github.com/mendix/hybrid-app-template
Then you need to add your development url (i.e. http://diederik:8080) to the developer endpoint in the config/environments.json file. Then you need to create a new build e.g.
npm run package -- --env.target=development
Hope this helps.