Works quite well with my iPhone and iPad.
I have a collection of FLAC music on my main computer and was looking for a way to listen on my laptop and portables without transcoding and taking up space. After looking at all the available options, this software was exactly what I needed. No need to use a web interface or 3rd party software to use it. No fiddling with flac libraries and java. It just worked. I am happy to have purchased it.
Only comments are the ios and mac apps look a little dated but that does not take away from their usefulness.