Quite good but you need to spend time tweaking.
This is a good product for me. Some folks have problems but it has worked well for me. It needs lots of tweaking and I have had harmony remotes for many years. All and all its a great product. Too expensive though. I have an iPhone 6+ and it works fine. Once and a while it wont connect right away. I just cancel the connection and connect again. Works every time.
Egmonster about
Harmony® Control, v4.2