Hey @timphnx!
We don't currently have built-in support for having different app versions per environment. It is something on the radar though and there's a feature request where you can follow along to see if it's included and we can also report back here.
It is possible to access the current environment with {{ retoolContext.environment }} to change the behavior of your app depending on what environment you're in, but I understand that also doesn't solve the problem in many cases.