The Lemur iOS app is vastly improved over the original hardware version. We have added dozens of features, including a full-blown In App Editor as well as a new set of skins that totally change the tool. We've also fixed a ton of bugs along the way. Lemur for iOS is in constant development, we are actively working on many new and exciting features.
Lemur can communicate over Wi-Fi and MIDI hardware to any hardware or software that responds to MIDI or OSC messages. Lemur is fully multitouch, it can track all 10 fingers simultaneously.
Have a look at the Lemur product page for a full in-depth description of all the features: http://liine.net/en/products/lemur/
You can also download the free Lemur Editor to experimental with templates and see for yourself what's possible with Lemur.