Mendix does not support live data-updates by nature. But there are ways to get near-real time behavior.
The most common is the use of the AppStore app ‘Microflow Timer’. It provides you with the option of an update on a set interval.
And there is one option that gets a real live-update: streams. Andrej Gajduk wrote an article about. I never got to creating an app using it and can not find it anymore.
Also have a look at the pusher, paid service, that triggers a microflow or nanoflow upon object-change.
Of the same sort, but native and free, probably your best bet: Push Notifications Connector
Good luck!
Okay thank you! I got it!