I use SimpleCov very rarely. I can probably count on one hand the number of times I've run it this year. I'd be okay removing it if others agree but I think @jferris wants it in every thoughtbot app. Is there a Code Coverage as a Service?! Basically GitHub post-commit hook + install SimpleCov gem + inject these two lines of code to top of spec/spec_helper.rb + run rake task + display HTML output.