This looks interesting to me, but doesn't Apple hate apps that are too much like the App Store? The Private App Store description seems like it would make it a target for the ban hammer.
We've already been using AppDrop with clients and it's been great for them to distribute apps to their own users.
All price levels get access to AppDrop Community which lets you easily share your creations with a link. The Corporate and Founding Partner levels will also get their very own, configurable custom-branded PencilCase AppDrop store.
I'd only give these guys money if "AppDrop" isn't part of the value proposition for you.
(It isn't for me! An app toolkit that works like HC sounds fantastic - I wish they weren't muddying the waters with this app-store business.)