PEEBLE  I agree with "unknown" 100%.

BEWARE of using this app. It "phones home" AFTER asking for your password.

@VIVA - did you even READ the comment below yours? I'l quote it for you shall I:

"Denying the request via Little Snitch results in ping hanging around in the background and effectively crashing the app, which won't relaunch until said ping is force quit from Activity Monitor."

The same happens to me.

I'll re-quote the salient part here again (in case you missed it) ;-)

"...and effectively crashing the app"

So NO, you CANNOT use this app even with Little Snitch installed as it simply crashes when the phoning is denied.

I am now looking for a freeware/donationware alternative as I do not like keeping security risk / crashing software on my mac.  
(Version 1.9)