It's quite cute and the 3D commus are nice! So far there's only one, but it's well animated and cute to watch.
The sound booth is nice because it gives people an official way to listen to deresute's BGM, as well as a select few idol songs (mainly the april fool's event songs and onegai! cinderella, as of launch.) The photo studio is a little annoying to navigate but it's not *missing* features from deresute's, and you can use this version with VR/Google Cardboard.
Overall, it's good, but useless if you don't have deresute already downloaded.