The simplest answer is : YES
The most complete answer is :
Since the aim of B4x products and main feature is a common IDE, and very similar language, any app can be re-created in either of the 3 Platforms, except for Platform specific (hardware) limitations.
This means that an App created in B4A can "easily" ( according to your degree of expertize ) be implemented in B4i, even sharing up to about 80% of the code between them. BUT since they are different devices ( OS wise ), some adaptation is needed.