Editor compatibility
Wix Blocks apps aren't supported in the Wix Harmony editor. Existing Blocks apps remain available for purchase on the Wix App Market for Wix Editor and Wix Studio sites. To learn more, see About Wix Harmony and Blocks.
When you set up your app's pricing in the app dashboard, you can choose to provide users with a free trial. This is recommended especially if you don't provide a free version of your app, so you can let users experience your app's value before they decide whether to upgrade.

Once you choose to add a free trial, your app market listing will show how many days of free trial the app offers.

When users are in the free trial period, their app works as if it's upgraded. When the free trial is over, Wix will automatically move them to the plan they selected. You can see information about the app's billing and the free trial in the app instance.
You can also see the app's current pricing plan in the vendorProductId object of the Velo decodedAppInstance object, from the moment the user began the free trial.
Learn how to set up and manage free trials.