For Android Projects you need to install Android SDK. Make sure that android binary is added to your PATH. You can check it by running from command line:
On a reasonably configured linux machine, that's everything that is needed in order to run Apphance Flow.
We tested it with Ubuntu: 12.04 LTS server and 12.10 server (pick your version depending on your needs - LTS provides guaranteed 5 years support, where 12.10 has generally more recent software).
Some tools requires initial setup before first use.