I've tested the FREE version for 2 hours and I'm happy with the result.
S-bot allowed me to collect approximately 1200 bonus boxes worth 2k uri and 15 GG extra energy, meaning that it works!
The only thing I've noticed is that the bot doesn't detect all bonus boxes (or doesn't collect them all?) because while closely monitoring it, I've seen that many boxes were skipped and bot only collected a mere 1/2 of all the boxes I've seen.
Anyway, I was looking for a new botting tool and S-bot does the job, so I'm happy with it.
Purchasing a VIP license can be a good investment only if you can't check your bot status frequently or always need to perform tasks using your PC, therefore you need to use your pointer.
If the above doesn't apply, then I believe FREE version is good to go, even if you won't get access to other features I deem very cool.