Ok, maybe thats me, but even though you may argue pro and contra, if in doubt its still not worth the risk. IMHO doesn't that whole thing ring a bell with an inscription of like "misdirection".
1. Someone you don't know, comes and requests, that you not use the thing, but review it, which implies to use it, but at the same time bypasses the directly obvious mentioning of the command "Execute me".
2. Secondly theres allways another possibility to get data out of an computer, at least one more than one had previously thought of, which also reminds me of magic, because I found theres allways one trick more that I didn't thought it could fool me before
, which for magic is a cool thing, thus it never gets boring.
I won't go into detail here, with methods of how programs may bypass things, but I would recommend to not even try any program of an unkown untrusted source, even if you don't use it to store your precious data, it still could steall passwords for this forum and so on possibilities are endless. And out of a sudden, since review said, 30 days trial period, decide yourself, even if I don't need it, you would have like an amount of corrupted accounts lingering in the system, let alone if only one was admin.
3. If it was a con-scheme it really has its aim printed on the top of its forehead, aiming at the very secrets of the trade.
If you're think you're smarter, you're not, I know because I was smarter, and now I am smarter.