Apple has Xcode, this one has:
yappadappadoo-Suite to develop PWA's quickly and economically.
We'll find out if it's developer friendly as other app creators.
Wait for it then? I think this one should come first because where will the apps come from if the suite is not developed first? The suite should be the one prioritized since it needs to be able to provide ease of creation of apps to developers. It's an app store so, more apps, more sales, probably.
As ive read Yappa suite will be there for interested developers. They will provide needed templates for the application they are going to develop but since they are also going to accept other applications from different developers outside the platform so it is ok. They will have ready applications by then.