You can try twitteraudit.com (I made it a few years ago). It doesn't do anything fancy at all, but it works pretty well with about a 10% margin of error. It onl

You can try twitteraudit.com (I made it a few years ago). It doesn't do anything fancy at all, but it works pretty well with about a 10% margin of error. It only looks at a sample of 5000 followers though.