CouchDB is written in Erlang and Android is one of their targets so that you can write native mobile applications that sync their databases once you are back online.
OK. Except, 'CouchOne Mobile for Android' seems to come as a complete package with Android SDK bindings. As you'd expect, no Erlang required/mentioned.
I'd be interested to know if an Erlang VM is actually included in the CouchOne for Android package, and, if so, is it possible (or useful) to spin up another node on the phone and connect them natively?
I have not tried, but I can not see why it should not work to spin up two separate VMs and connect them. The distribution between phones is however tested and works.