Fat Free CRM (http://www.fatfreecrm.com/ http://www.fatfreecrm.com/) is a pretty nice self-hosted, RoR, option. There's an iOS app for it called Senbei, off the

Fat Free CRM (http://www.fatfreecrm.com/ http://www.fatfreecrm.com/) is a pretty nice self-hosted, RoR, option. There's an iOS app for it called Senbei, off the top of my head, although it is a little limited.