We've been using Comm100 for quite a while now and it has served us very well. The iPad version, however, appears to be more of an afterthought than a genuine, usable application. It has serious drawbacks and usability issues. Very few features from the web-based app are supported in the iPad version. You can't see the entire landing or current URL pages, and you can't click on them to see where your customer is either. Also, if you switch to another app, like Skype, while logged into Comm100 the chat does not continue to run. Comm100LiveChat stays open, but it is in suspended animation unless you're actually in it. This is a real Achilles heel and makes it little more than a token gesture at mobile support. We're really trying to move away from desktop operating systems, and Comm100 iOS support is really holding that up.
It's better than nothing, but not by much. If Apple would support Flash our lives would be complete, so while C100 is bad, Apple's insistence on warring with Adobe continues to impact their customers negatively.