I've just seen there is also JRemote? How does this compare to Gizmo? I'm confused why there are now 2 apps, I've obviously missed something in the years I've been away.
The various smartphone based "remotes" all speak the same protocol to MC. They just have different user interfaces. As far as I know, it breaks down sort of like this:
IOS: JRemote. $10. Very slick and nice to use. Doesn't do everything, but does a lot very well. Owned and maintained by JRiver itself; though it was originally written by a 3rd party.
Android:
JRemote: Not quite as slick as JRemote for IOS. I believe it's missing a feature or two and the look and feel is different. Also $10. Also owned by JRiver.
Gizmo: Free. Rather basic, but it works for those basic needs well. Not all that polished, but it's stable.
EOS: Third party commercial software. $5. Does some really neat stuff. More advanced with zones, linking, and volume control than others. Nice interface for editing Playing Now.
There have been 3 or 4 other remotes, which you can find detailed in a sticky at the top of the forum, but they seem to have mostly all died off.
Brian.