I'm very eager for the immediate review viewer feature. Anything available yet?
I've been testing Helicon Remote for a few days with a Nikon 5100 connected to a Samsung Galaxy Tab 10.1. I've generally been pleased, especially when shooting images for focus stacking. Also, HR seems to have all the features needed for general tethered shooting in the studio or on location except for the missing viewer feature, which seems like a show-stopper for that application.
For several months, I've been using NKRemote on my laptop. For focus stacking, HR is way ahead of NKRemote, in terms of both interface and capabilities. It seems like focus stacking was, for NKRemote, an afterthought. HR would be better for general tethered shooting, too, if a good immediate review capability were added. When that is available, I would love to use HR to switch from my laptop to my tablet and would recommend it for anyone shooting tethered.