VM should work. For B4i (ios) you need also a mac for compile afaik.
The output runs on win, linux, server, mac, ios, android or arduino. Depending on what you used b4a, b4i, b4j or b4r. The syntax is the same eveywhere.
The crossplatform libary b4x pages makes sure that the same program look and feel can be compiled to various platforms without to much hassle.