How does it handle developer certs from Apple? I'd rather not share mine with a 3rd party or my code. One could easily just run jenkins/hudson/travis (with plugins) locally and do it, which would probably be faster too since it would have less contention.
Setting up a ci server is painful. cisimple makes that pain go away.
Also you can upload your certs/profiles to cisimple. If you're concerned about security there's more information about how code and certs are handled on the faq: https://www.cisimple.com/faq
Bonus points : when I first read the title being that I'm a French speaker, I read it as "si simple" since it's the same pronunciation, which means "so simple"