I've known about Nozzle for a while, praised by many of my SEO colleagues and friends!
When I saw that our friends at AppSumo were offering us a Lifetime deal for barely the cost of a small "low-end" tracker, I can assure you that I did not hesitate for a second!
Nozzle has everything you need and more to follow "to the point" everything that an SEO or webmarketer who wants to really understand what is happening on his rankings and keywords!
Last step to propel Nozzle into the stratosphere: a keyword research tool associated with the already existing features!
It seems to me that it's on their roadmap but I'll put a layer on it to make sure it's taken into account as an expectation for future developments of the application ;)
Anyway, thanks Derek, the Nozzle team and, of course, AppSumo !