I checked this out a few weeks ago during a convo with OP and I was actually pleasantly surprised.
I've been in online marketing and the SEO game for 5 years now and tried a lot of tools and built some of my own. At first I was like - oh yay another rank tracker. But, I actually really like this one. See I crunch a lot of data - and those of you who know how to look at SERPs in ways to find opportunities for improvement can get some good use out of this.
It's a simple and easy to use rank tracker, with a pretty good UI, and seems quite accurate (I have found many that aren't) But what I really like is the ability to do mass bulk quantities and then export reports with filters. The filters are instant when typed and you can filter by any textual character which is really cool. So if you are like me and run several sites in a niche or city, this is great for filtering by either cities, key terms, or domains to suit your needs.
So... I recommend checking it out. There are a lot of good tools out there but this one definitely serves a purpose for rank tracking and getting some quick and helpful SERP reports.