Just tried this out and so far, it seems legit. $10 a month to have an automated process re-balance your 401k (can cancel whenever). First month free (which includes them doing the work), so can't hurt regardless!
I am completely stupid when it comes to investments and retirement planning, but it's already made me money in the past few days and seems like it makes sense. Looks like the way my job did my allocations, was WAY off. Very ... conservative and I really didn't know.
Hope it helps.