The Beautifyer iPhone app is claimed to playback compressed audio files in an enhanced way, using a new algorithm.
Transform your [...] music files into an extraordinary new listening experience [...]
It is my guess that this is just marketing talk, and that the application, in fact, will not do much more than some equalizer adjustments and maybe some phase adjustments to give a stereo widening effect. In my opinion, this would make the music sound worse, not better.
Or is this really some new, revolutionary new algorithm that really does enhance the audio output?
I don't want to spend my money on an app that turns out just to be a fancy equalizer.