So I wrote the below and Daniel was amazing. He emailed me shortly after and further explained Google Analytics and that overuse of a keyword isn't a negative if keywords are still used properly, hence this app doesn't measure overuse. Thanks Daniel. Great app and thanks for the help !
Great app, it really helped with my site setup. One of the things it doesn't do that I found just by googling is assess your tags for over delivery. If you look at my site www.smittenpets.com.au I sell mostly dog accessories and use the word dog a lot (apparently too much). The % use of the word 'dog' on my site is 208%. So now I'm struggling with ways to reduce this. If anyone has any feedback it would be greatly appreciated. Other than that, this app helped with everything else.