This is possible with all Qlik tools (though for QlikView you might need version 11.2 SR5 or higher, but since you are a new customer you will be buying 12 anyway).
Reloads can be scheduled on a constant basis.
Alternatively (or at the same time) you could use Direct Discovery if your infrastructure would allow a BI tool to directly access your source database
For qlik sense desktop you have to open the app and go into the Data Load Editor and click the Load Data button in order to refresh the data.
In the Qlik Sense full platform (server) and Qlik Sense Cloud Business, data refresh are done on a scheduled basis or as needed.
If you upgrade it to licensed version or monthly subscriptions you will be able to connect to your data sources without having to create QVD (or other supporting files) on desktop version first and uploading to cloud version as well as auto refresh / schedule data load.
For your reference go through the following link to create connection or data source in Qlik Sense cloud
Here is a quick instructional video: Qlik Sense Cloud - Refreshing data in Qlik Sense Cloud apps - YouTube