The Dutch & Dutch app is called Ascend. Ascend works with 8c's that run a firmware 2.0 or newer. Older firmware version work with lanspeaker, which is only available as a web-app on: http://lanspeaker.com
Ascend is available as a web-app on: http://app.ascend.audio
Ascend is also hosted on your 8c. This means that you can use the app, even if you don't have an internet connection. Depending on your local router settings, one of the following URLs should work (replace "8c-1234" with your products' serial number).
The Ascend App is also available as a native app for both iOS and Android: