It is possible to reload an app on a regular time basis or trigger basis in QlikSense Enterprise.
Refer the following link for detailed information on creation of reload tasks.
There is no trial edition for the server. But these are the list of additional functionalities you will be able to achieve using the server edition.
- Scheduled Reloads
- Web integration and accessible with any device
- Data security
- Secure app distribution
- Roll out Extensions in your apps.
- Self service for end users
- Easily shareable content.
And I am sure there are more features which will be added with the upcoming version of Sense.