is it possible to run the metasploit framework on Android devices?
I've googled it up and found this link. But there's an access denied error.
Judging from my own Google results, I would say it is possible.
There is no direct port of metasploit to Android but there are other methods:
dSploit which has support for many of Metasploit's methods
A side note: your link requires you to create an account. If you're this curious, you might as well. Of course if you're suspicious of the website, use Tor and a throw-away email address to make the account.