Yeah, I believe there are some out there that claim to be one, but those are really no different than stock reviewers; when it comes down to it, it is whether or not a cryptocurrency is adopted and the platform utilized that determines the value, coupled with people's subjective valuations (what people will buy vs sell it for), so any platform that claims to 'independently' value ICOs is potentially blowing smoke. When investing, I personally decide if I think the product solves a great business problem or would be emedded in public life at some point, which is why I love Steem! :) But I'm with you, it can be difficult to determine what you think the value of something will be! :)