If you have found an app that is interesting to you, you can start a free one-month
trial.
To start a trial
You can now use the app just like any other flow element. You can use it in your
flows, define its properties, ... Apps also have a context menu (similar to the context
menu of the configurators) that you can use to check the app details, to manage your
subscription, ... When your trial is about to expire, you'll get a notification. If you
want to continue using the app, you'll have to buy a license. See
Purchasing an app.