First the good... it *does* play at hi-res as advertised... tho understand the iPhone/iPad internal hardware does not go above 48k, so to go beyond that you need to have an external DAC plugged into the Lightning port. This situation the app handles amazingly - it even shows you what output device you are using and allows you to manually adjust the resolution accordingly. This is a big WIN for me. Sadly, the app is a huge MESS. Huge mess. I cant believe Korg put their name on it. It does not read tags (lumps most files into an unknown artist/album category) and you have to transfer files from the cloud ONE AT A TIME. Also, the UI is a trainwreck and while it will run on iPad, it is not an iPad app. This *could* be a fantastic app if theyd see it through and finish it. Sadly now its a mess that does do some cool stuff. It user experience is akin to using some cool freeware back in the Win95 days.