This is pretty much the same when you create an app and install it to your mobile device. The first thing the installer do is to install white-labelled AppSheet App and then launch your app build on a headless browser.
@badm
Mine is just a guess. I haven’t tried to open a non-white-labelled appsheet app from a white-labelled app. I believe the right direction for your query is support@appsheet.com. Or when available may be @praveen or @brian might reply better.
I haven’t tried it either, but I believe it should just work. For example, you can whitelabel an app launcher, and then it can dynamically include any number of other apps.