They have an excellent library; unfortunately, the app crashes every single time I use it regardless of whether I use it on my phone or on my laptop. The sound quality is amazing, and the interface is very intuitive. I expect more from a premium subscription service...at the very least, the app should work as intended, but it doesn't. It is a big disappointment for the price to have to constantly unpause. On the bright side, Tidal does work seamlessly with the DJPRO software a Pioneer deck.