This information refers to the German market!
Yes, you can test modules without much setup effort for 30 days. This period allows you to take a deeper look at the modules you're interested in using. However, we recommend that you do not test too many modules simultaneously to have enough time for each module. Unfortunately, an extension of the test period is not possible.
You can quickly request the trial version via the AppStore of your xentral instance. Then, after about 10 minutes, perform an update. The module will become available to you once an update is completed.