How to make an app public?

[flpfontes]

I would like to know how I can make an app public, like this example of the government of Brazil.

https://paineldeobras.economia.gov.br/extensions/painel-obras/painel-obras.html

In this case from the government, no login is required.

How to do the same?

Do I need to purchase a different license?

[Gysbert_Wassenaar]

Iirc for Qlikview you need a Qlikview Extranet License. For Qlik Sense I think you can use license for a subscription that includes Analyzer Capacity.