I guess you could compare it to the model driven Power Apps. However, Alan's modeling language is more powerful. Especially the concept of state groups that allows you to specify complex business rules in the application model itself.

It's the process of laying down the rules for the data in your application that drives development in Alan. Unlike Google App Builder, you don't start from a drag and drop UI builder. Although a drag-and-drop UI builder is something we might want to add at some point. For most applications though, the generated UI is plenty powerful, because what it needs to support is perfectly specified in the datamodel.